Author: "Salima El-Chehadeh" - Searchworks@Jio Institute Digital Library Search Results

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1. SLITRK2 variants associated with neurodevelopmental disorders impair excitatory synaptic function and cognition in mice

Author: Salima El Chehadeh, Kyung Ah Han, Dongwook Kim, Gyubin Jang, Somayeh Bakhtiari, Dongseok Lim, Hee Young Kim, Jinhu Kim, Hyeonho Kim, Julia Wynn, Wendy K. Chung, Giuseppina Vitiello, Ioana Cutcutache, Matthew Page, Jozef Gecz, Kelly Harper, Ah-reum Han, Ho Min Kim, Marja Wessels, Allan Bayat, Alberto Fernández Jaén, Angelo Selicorni, Silvia Maitz, Arjan P. M. de Brouwer, Anneke Vulto-van Silfhout, Martin Armstrong, Joseph Symonds, Sébastien Küry, Bertrand Isidor, Benjamin Cogné, Mathilde Nizon, Claire Feger, Jean Muller, Erin Torti, Dorothy K. Grange, Marjolaine Willems, Michael C. Kruer, Jaewon Ko, Amélie Piton, and Ji Won Um
Subjects: Science
Abstract: The protein SLITRK2 plays an important role in synaptic communication. This study identifies X-linked SLITRK2 variants that underlie neurodevelopmental disorders by impairing excitatory synapses.
Published: 2022
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2. Amelogenesis imperfecta: Next-generation sequencing sheds light on Witkop’s classification

Author: Agnes Bloch-Zupan, Tristan Rey, Alexandra Jimenez-Armijo, Marzena Kawczynski, Naji Kharouf, O-Rare consortium, Muriel de La Dure-Molla, Emmanuelle Noirrit, Magali Hernandez, Clara Joseph-Beaudin, Serena Lopez, Corinne Tardieu, Béatrice Thivichon-Prince, ERN Cranio Consortium, Tatjana Dostalova, Milan Macek, International Consortium, Mustapha El Alloussi, Leila Qebibo, Supawich Morkmued, Patimaporn Pungchanchaikul, Blanca Urzúa Orellana, Marie-Cécile Manière, Bénédicte Gérard, Isaac Maximiliano Bugueno, Virginie Laugel-Haushalter, Yves Alembik, Victorin Ahossi, Isabelle Bailleul-Forestier, Isabelle Blanchet, Ariane Berdal, Marie José Boileau, Nicolas Chassaing, François Clauss, Caroline Delfosse, Anne De-Saint-Martin, Jean-Christophe Dahlet, Bérénice Doray, Jean-Luc Davideau, Tiphaine Davit-Béal, Hélène Dollfus, Jean-Pierre Duprez, Muriel de La Dure Molla, Klauss Dieterich, Dominique Droz, Salima El Chehadeh, Olivier Etienne, Edouard Euvrard, Laurence Faivre, Benjamin Fournier, Elsa Garot, Bruno Grollemund, Nathalie Guffon-Fouilhoux, Mathilde Huckert, Bertand Isidor, Sophie Jung, Didier Lacombe, Alinoe Lavillaurex, Marine Lebrun, Bruno Leheup, Adeline Loing, Sandrine Marlin, Jean-Jacques Morrier, Michèle Muller-Bolla, Sylvie Odent, Marie Paule Gelle, Juliette Piard, Linda Pons, Béatrice Richard, Massimiliano Rossi, Prune Sadones, Elise Schaefer, Jean-Louis Sixou, Sylvie Soskin, Marion Strub, Annick Toutain, Alain Verloes, Frédéric Vaysse, and Delphine Wagner
Subjects: enamel, amelogenesis imperfecta, genetics, rare diseases, NGS, next-generation sequencing, Physiology, QP1-981
Abstract: Amelogenesis imperfecta (AI) is a heterogeneous group of genetic rare diseases disrupting enamel development (Smith et al., Front Physiol, 2017a, 8, 333). The clinical enamel phenotypes can be described as hypoplastic, hypomineralized or hypomature and serve as a basis, together with the mode of inheritance, to Witkop’s classification (Witkop, J Oral Pathol, 1988, 17, 547–553). AI can be described in isolation or associated with others symptoms in syndromes. Its occurrence was estimated to range from 1/700 to 1/14,000. More than 70 genes have currently been identified as causative.Objectives: We analyzed using next-generation sequencing (NGS) a heterogeneous cohort of AI patients in order to determine the molecular etiology of AI and to improve diagnosis and disease management.Methods: Individuals presenting with so called “isolated” or syndromic AI were enrolled and examined at the Reference Centre for Rare Oral and Dental Diseases (O-Rares) using D4/phenodent protocol (www.phenodent.org). Families gave written informed consents for both phenotyping and molecular analysis and diagnosis using a dedicated NGS panel named GenoDENT. This panel explores currently simultaneously 567 genes. The study is registered under NCT01746121 and NCT02397824 (https://clinicaltrials.gov/).Results: GenoDENT obtained a 60% diagnostic rate. We reported genetics results for 221 persons divided between 115 AI index cases and their 106 associated relatives from a total of 111 families. From this index cohort, 73% were diagnosed with non-syndromic amelogenesis imperfecta and 27% with syndromic amelogenesis imperfecta. Each individual was classified according to the AI phenotype. Type I hypoplastic AI represented 61 individuals (53%), Type II hypomature AI affected 31 individuals (27%), Type III hypomineralized AI was diagnosed in 18 individuals (16%) and Type IV hypoplastic-hypomature AI with taurodontism concerned 5 individuals (4%). We validated the genetic diagnosis, with class 4 (likely pathogenic) or class 5 (pathogenic) variants, for 81% of the cohort, and identified candidate variants (variant of uncertain significance or VUS) for 19% of index cases. Among the 151 sequenced variants, 47 are newly reported and classified as class 4 or 5. The most frequently discovered genotypes were associated with MMP20 and FAM83H for isolated AI. FAM20A and LTBP3 genes were the most frequent genes identified for syndromic AI. Patients negative to the panel were resolved with exome sequencing elucidating for example the gene involved ie ACP4 or digenic inheritance.Conclusion: NGS GenoDENT panel is a validated and cost-efficient technique offering new perspectives to understand underlying molecular mechanisms of AI. Discovering variants in genes involved in syndromic AI (CNNM4, WDR72, FAM20A … ) transformed patient overall care. Unravelling the genetic basis of AI sheds light on Witkop’s AI classification.
Published: 2023
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3. Stepwise use of genomics and transcriptomics technologies increases diagnostic yield in Mendelian disorders

Author: Estelle Colin, Yannis Duffourd, Martin Chevarin, Emilie Tisserant, Simon Verdez, Julien Paccaud, Ange-Line Bruel, Frédéric Tran Mau-Them, Anne-Sophie Denommé-Pichon, Julien Thevenon, Hana Safraou, Thomas Besnard, Alice Goldenberg, Benjamin Cogné, Bertrand Isidor, Julian Delanne, Arthur Sorlin, Sébastien Moutton, Mélanie Fradin, Christèle Dubourg, Magali Gorce, Dominique Bonneau, Salima El Chehadeh, François-Guillaume Debray, Martine Doco-Fenzy, Kevin Uguen, Nicolas Chatron, Bernard Aral, Nathalie Marle, Paul Kuentz, Anne Boland, Robert Olaso, Jean-François Deleuze, Damien Sanlaville, Patrick Callier, Christophe Philippe, Christel Thauvin-Robinet, Laurence Faivre, and Antonio Vitobello
Subjects: genome sequencing, RNA-seq, optical genome mapping, long-read sequencing, clinical diagnoses, Biology (General), QH301-705.5
Abstract: Purpose: Multi-omics offer worthwhile and increasingly accessible technologies to diagnostic laboratories seeking potential second-tier strategies to help patients with unresolved rare diseases, especially patients clinically diagnosed with a rare OMIM (Online Mendelian Inheritance in Man) disease. However, no consensus exists regarding the optimal diagnostic care pathway to adopt after negative results with standard approaches.Methods: In 15 unsolved individuals clinically diagnosed with recognizable OMIM diseases but with negative or inconclusive first-line genetic results, we explored the utility of a multi-step approach using several novel omics technologies to establish a molecular diagnosis. Inclusion criteria included a clinical autosomal recessive disease diagnosis and single heterozygous pathogenic variant in the gene of interest identified by first-line analysis (60%–9/15) or a clinical diagnosis of an X-linked recessive or autosomal dominant disease with no causative variant identified (40%–6/15). We performed a multi-step analysis involving short-read genome sequencing (srGS) and complementary approaches such as mRNA sequencing (mRNA-seq), long-read genome sequencing (lrG), or optical genome mapping (oGM) selected according to the outcome of the GS analysis.Results: SrGS alone or in combination with additional genomic and/or transcriptomic technologies allowed us to resolve 87% of individuals by identifying single nucleotide variants/indels missed by first-line targeted tests, identifying variants affecting transcription, or structural variants sometimes requiring lrGS or oGM for their characterization.Conclusion: Hypothesis-driven implementation of combined omics technologies is particularly effective in identifying molecular etiologies. In this study, we detail our experience of the implementation of genomics and transcriptomics technologies in a pilot cohort of previously investigated patients with a typical clinical diagnosis without molecular etiology.
Published: 2023
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4. The different clinical facets of SYN1-related neurodevelopmental disorders

Author: Ilaria Parenti, Elsa Leitão, Alma Kuechler, Laurent Villard, Cyril Goizet, Cécile Courdier, Allan Bayat, Alessandra Rossi, Sophie Julia, Ange-Line Bruel, Frédéric Tran Mau-Them, Sophie Nambot, Daphné Lehalle, Marjolaine Willems, James Lespinasse, Jamal Ghoumid, Roseline Caumes, Thomas Smol, Salima El Chehadeh, Elise Schaefer, Marie-Thérèse Abi-Warde, Boris Keren, Alexandra Afenjar, Anne-Claude Tabet, Jonathan Levy, Anna Maruani, Ángel Aledo-Serrano, Waltraud Garming, Clara Milleret-Pignot, Anna Chassevent, Marije Koopmans, Nienke E. Verbeek, Richard Person, Rebecca Belles, Gary Bellus, Bonnie A. Salbert, Frank J. Kaiser, Laure Mazzola, Philippe Convers, Laurine Perrin, Amélie Piton, Gert Wiegand, Andrea Accogli, Francesco Brancati, Fabio Benfenati, Nicolas Chatron, David Lewis-Smith, Rhys H. Thomas, Federico Zara, Pasquale Striano, Gaetan Lesca, and Christel Depienne
Subjects: SYN1, synapsins, reflex epilepsy, genotype-phenotype correlation, neurodevelopmental disorders, autism spectrum disorders, Biology (General), QH301-705.5
Abstract: Synapsin-I (SYN1) is a presynaptic phosphoprotein crucial for synaptogenesis and synaptic plasticity. Pathogenic SYN1 variants are associated with variable X-linked neurodevelopmental disorders mainly affecting males. In this study, we expand on the clinical and molecular spectrum of the SYN1-related neurodevelopmental disorders by describing 31 novel individuals harboring 22 different SYN1 variants. We analyzed newly identified as well as previously reported individuals in order to define the frequency of key features associated with these disorders. Specifically, behavioral disturbances such as autism spectrum disorder or attention deficit hyperactivity disorder are observed in 91% of the individuals, epilepsy in 82%, intellectual disability in 77%, and developmental delay in 70%. Seizure types mainly include tonic-clonic or focal seizures with impaired awareness. The presence of reflex seizures is one of the most representative clinical manifestations related to SYN1. In more than half of the cases, seizures are triggered by contact with water, but other triggers are also frequently reported, including rubbing with a towel, fever, toothbrushing, fingernail clipping, falling asleep, and watching others showering or bathing. We additionally describe hyperpnea, emotion, lighting, using a stroboscope, digestive troubles, and defecation as possible triggers in individuals with SYN1 variants. The molecular spectrum of SYN1 variants is broad and encompasses truncating variants (frameshift, nonsense, splicing and start-loss variants) as well as non-truncating variants (missense substitutions and in-frame duplications). Genotype-phenotype correlation revealed that epileptic phenotypes are enriched in individuals with truncating variants. Furthermore, we could show for the first time that individuals with early seizures onset tend to present with severe-to-profound intellectual disability, hence highlighting the existence of an association between early seizure onset and more severe impairment of cognitive functions. Altogether, we present a detailed clinical description of the largest series of individuals with SYN1 variants reported so far and provide the first genotype-phenotype correlations for this gene. A timely molecular diagnosis and genetic counseling are cardinal for appropriate patient management and treatment.
Published: 2022
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5. The diagnostic rate of inherited metabolic disorders by exome sequencing in a cohort of 547 individuals with developmental disorders

Author: Julian Delanne, Ange-Line Bruel, Frédéric Huet, Sébastien Moutton, Sophie Nambot, Margot Grisval, Nada Houcinat, Paul Kuentz, Arthur Sorlin, Patrick Callier, Nolwenn Jean-Marcais, Anne-Laure Mosca-Boidron, Frédéric Tran Mau-Them, Anne-Sophie Denommé-Pichon, Antonio Vitobello, Daphné Lehalle, Salima El Chehadeh, Christine Francannet, Marine Lebrun, Laetitia Lambert, Marie-Line Jacquemont, Marion Gerard-Blanluet, Jean-Luc Alessandri, Marjolaine Willems, Julien Thevenon, Mondher Chouchane, Véronique Darmency, Clémence Fatus-Fauconnier, Sébastien Gay, Marie Bournez, Alice Masurel, Vanessa Leguy, Yannis Duffourd, Christophe Philippe, François Feillet, Laurence Faivre, and Christel Thauvin-Robinet
Subjects: Inherited metabolic disorders, Exome sequencing, Intellectual disability, Developmental delay, Genotype first, Medicine (General), R5-920, Biology (General), QH301-705.5
Abstract: Considering that some Inherited Metabolic Disorders (IMDs) can be diagnosed in patients with no distinctive clinical features of IMDs, we aimed to evaluate the power of exome sequencing (ES) to diagnose IMDs within a cohort of 547 patients with unspecific developmental disorders (DD). IMDs were diagnosed in 12% of individuals with causative diagnosis (177/547). There are clear benefits of using ES in DD to diagnose IMD, particularly in cases where biochemical studies are unavailable. Synopsis: Exome sequencing and diagnostic rate of Inherited Metabolic Disorders in individuals with developmental disorders.
Published: 2021
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6. A homozygous MED11 C-terminal variant causes a lethal neurodegenerative disease

Author: Elisa Calì 1, Sheng-Jia Lin 2, Clarissa Rocca 1, Yavuz Sahin 3, Aisha Al Shamsi 4, Salima El Chehadeh 5, Myriam Chaabouni 6, Kshitij Mankad 7, Evangelia Galanaki 1, Stephanie Efthymiou 1, Sniya Sudhakar 7, Alkyoni Athanasiou-Fragkouli 1, Tamer Çelik 8, Nejat Narlı 9, Sebastiano Bianca 10, David Murphy 11, Francisco Martins De Carvalho Moreira 12, SYNaPS Study Group, Andrea Accogli 13, Cassidy Petree 2, Kevin Huang 2, Kamel Monastiri 14, Masoud Edizadeh 3, Rosaria Nardello 11, Marzia Ognibene 15, Patrizia De Marco 15, Martino Ruggieri 16, Federico Zara 17, Pasquale Striano 18, Yavuz Şahin 19, Lihadh Al-Gazali 20, Marie Therese Abi Warde 21, Benedicte Gerard 22, Giovanni Zifarelli 23, Christian Beetz 23, Sara Fortuna 24, Miguel Soler 25, Enza Maria Valente 26, Gaurav Varshney 2, Reza Maroofian 1, Vincenzo Salpietro 27, Henry Houlden 1, Nardello. Rosaria, Elisa Calì 1, Sheng-Jia Lin 2, Clarissa Rocca 1, Yavuz Sahin 3, Aisha Al Shamsi 4, Salima El Chehadeh 5, Myriam Chaabouni 6, Kshitij Mankad 7, Evangelia Galanaki 1, Stephanie Efthymiou 1, Sniya Sudhakar 7, Alkyoni Athanasiou-Fragkouli 1, Tamer Çelik 8, Nejat Narlı 9, Sebastiano Bianca 10, David Murphy 11, Francisco Martins De Carvalho Moreira 12, SYNaPS Study Group, and Andrea Accogli 13, Cassidy Petree 2, Kevin Huang 2, Kamel Monastiri 14, Masoud Edizadeh 3, Rosaria Nardello 11, Marzia Ognibene 15, Patrizia De Marco 15, Martino Ruggieri 16, Federico Zara 17, Pasquale Striano 18, Yavuz Şahin 19, Lihadh Al-Gazali 20, Marie Therese Abi Warde 21, Benedicte Gerard 22, Giovanni Zifarelli 23, Christian Beetz 23, Sara Fortuna 24, Miguel Soler 25, Enza Maria Valente 26, Gaurav Varshney 2, Reza Maroofian 1, Vincenzo Salpietro 27, Henry Houlden 1, Nardello. Rosaria
Subjects: Human mediator complex, MED11, MEDopathies
Abstract: Purpose: The mediator (MED) multisubunit-complex modulates the activity of the transcriptional machinery, and genetic defects in different MED subunits (17, 20, 27) have been implicated in neurologic diseases. In this study, we identified a recurrent homozygous variant in MED11 (c.325C>T; p.Arg109Ter) in 7 affected individuals from 5 unrelated families. Methods: To investigate the genetic cause of the disease, exome or genome sequencing were performed in 5 unrelated families identified via different research networks and Matchmaker Exchange. Deep clinical and brain imaging evaluations were performed by clinical pediatric neurologists and neuroradiologists. The functional effect of the candidate variant on both MED11 RNA and protein was assessed using reverse transcriptase polymerase chain reaction and western blotting using fibroblast cell lines derived from 1 affected individual and controls and through computational approaches. Knockouts in zebrafish were generated using clustered regularly interspaced short palindromic repeats/Cas9. Results: The disease was characterized by microcephaly, profound neurodevelopmental impairment, exaggerated startle response, myoclonic seizures, progressive widespread neurodegeneration, and premature death. Functional studies on patient-derived fibroblasts did not show a loss of protein function but rather disruption of the C-terminal of MED11, likely impairing binding to other MED subunits. A zebrafish knockout model recapitulates key clinical phenotypes. Conclusion: Loss of the C-terminal of MED subunit 11 may affect its binding efficiency to other MED subunits, thus implicating the MED-complex stability in brain development and neurodegeneration.
Published: 2022

7. Same performance of exome sequencing before and after fetal autopsy for congenital abnormalities: toward a paradigm shift in prenatal diagnosis?

Author: Nicolas Bourgon, Aurore Garde, Ange-Line Bruel, Mathilde Lefebvre, Frederic Tran Mau-Them, Sebastien Moutton, Arthur Sorlin, Sophie Nambot, Julian Delanne, Martin Chevarin, Charlotte Pöe, Julien Thevenon, Daphné Lehalle, Nolween Jean-Marçais, Paul Kuentz, Laetitia Lambert, Salima El Chehadeh, Elise Schaefer, Marjolaine Willems, Fanny Laffargue, Christine Francannet, Mélanie Fradin, Dominique Gaillard, Sophie Blesson, Alice Goldenberg, Yline Capri, Paul Sagot, Thierry Rousseau, Emmanuel Simon, Christine Binquet, Marie-Laure Ascencio, Yannis Duffourd, Christophe Philippe, Laurence Faivre, Antonio Vitobello, and Christel Thauvin-Robinet
Subjects: Fetus, Pregnancy, Prenatal Diagnosis, Exome Sequencing, Genetics, Humans, Abnormalities, Multiple, Exome, Female, Autopsy, Ultrasonography, Prenatal, Genetics (clinical), Congenital Abnormalities
Abstract: Prenatal exome sequencing could be complex because of limited phenotypical data compared to postnatal/portmortem phenotype in fetuses affected by multiple congenital abnormalities (MCA). Here, we investigated limits of prenatal phenotype for ES interpretation thanks to a blindly reanalysis of postmortem ES data using prenatal data only in fetuses affected by MCA and harboring a (likely)pathogenic variant or a variant of unknown significance (VUS). Prenatal ES identified all causative variant previously reported by postmortem ES (22/24 (92%) and 2/24 (8%) using solo-ES and trio-ES respectively). Prenatal ES identified 5 VUS (in four fetuses). Two of them have been previously reported by postmortem ES. Prenatal ES were negative for four fetuses for which a VUS were diagnosed after autopsy. Our study suggests that prenatal phenotype is not a limitation for implementing pES in the prenatal assessment of unsolved MCA to personalize fetal medicine and could influence indication of postmortem examination.
Published: 2022
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8. Episignatures in practice: independent evaluation of published episignatures for the molecular diagnostics of ten neurodevelopmental disorders

Author: Thomas Husson, François Lecoquierre, Gaël Nicolas, Anne-Claire Richard, Alexandra Afenjar, Séverine AUDEBERT-BELLANGER, Catherine Badens, Frédéric Bilan, Varoona Bizaoui, Anne Boland, Marie-Noelle Bonnet-Dupeyron, Elise Brischoux-Boucher, Céline Bonnet, Marie Bournez, Odile Boute, Perrine Brunelle, Roseline Caumes, Perrine Charles, Nicolas Chassaing, Nicolas Chatron, Benjamin Cogné, Estelle Colin, Valérie Cormier-Daire, Rodolphe Dard, Benjamin Dauriat, Julian Delanne, Jean-François Deleuze, Florence Demurger, Anne-Sophie Denommé-Pichon, Christel Depienne, Anne Dieux Coeslier, Christèle Dubourg, Patrick Edery, salima EL CHEHADEH, Laurence Faivre, Mélanie FRADIN, Aurore Garde, David Geneviève, Brigitte Gilbert-Dussardier, Cyril Goizet, Alice Goldenberg, Evan Gouy, Anne-Marie Guerrot, Anne Guimier, Ines HARZALLAH, Delphine Héron, Bertrand Isidor, Xavier Le Guillou Horn, Boris Keren, Alma Kuechler, Elodie Lacaze, Alinoë Lavillaureix, Daphné Lehalle, Gaetan Lesca, James Lespinasse, Jonathan Levy, Stanislas Lyonnet, Godelieve Morel, Nolwenn Jean Marçais, Sandrine Marlin, Luisa Marsili, Cyril Mignot, Sophie Nambot, Mathilde Nizon, Robert Olaso, Laurent PASQUIER, Laurine Perrin, Florence Petit, Amélie Piton, Fabienne Prieur, Audrey Putoux, Marc Planes, Sylvie Odent, Chloé Quelin, Sylvia Quemener, Mélanie Rama, Marlène RIO, Massimiliano Rossi, Elise Schaefer, Sophie Rondeau, Pascale SAUGIER-VEBER, Thomas Smol, Sabine Sigaudy, Renaud TOURAINE, Frédéric Tran-Mau-Them, Aurélien Trimouille, Clémence Vanlerberghe, Valérie Vantalon, Gabriella Vera, Marie Vincent, Alban Ziegler, Olivier Guillin, Dominique Campion, and Camille Charbonnier
Abstract: Variants of uncertain significance (VUS) are a significant issue for the molecular diagnosis of rare diseases. The publication of episignatures as effective biomarkers of certain Mendelian neurodevelopmental disorders has raised hopes to help classify VUS. However, prediction abilities of most published episignatures have not been independently investigated yet, which is a prerequisite for an informed and rigorous use in a diagnostic setting. We generated DNA methylation data from 102 carriers of (likely) pathogenic variants in ten different genes, 58 VUS carriers, and 25 healthy controls. Combining published episignature information and new validation data with a k-nearest-neighbour classifier within a leave-one-out scheme, we provide unbiased specificity and sensitivity estimates for each of the signatures. Our procedure reached 100% specificity, but the sensitivities unexpectedly spanned a very large spectrum. While ATRX, DNMT3A, KMT2D, and NSD1 signatures displayed a 100% sensitivity, CREBBP-RSTS and one of the CHD8 signatures reached less than 40% sensitivity on our dataset. Remaining Cornelia de Lange syndrome, KMT2A, KDM5C and CHD7 signatures reached 70%-100% sensibility at best with unstable performances, suffering from heterogeneous methylation profiles among cases and rare discordant samples. Our results call for cautiousness and demonstrate that episignatures do not perform equally well. Some signatures are ready for confident use in a diagnostic setting. Yet, it is imperative to characterise the actual validity perimeter and interpretation of each episignature with the help of larger validation sample sizes and in a broader set of episignatures.
Published: 2023
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9. The genetic landscape and clinical spectrum of nephronophthisis and related ciliopathies

Author: Friederike Petzold, Katy Billot, Xiaoyi Chen, Charline Henry, Emilie Filhol, Yoann Martin, Marina Avramescu, Maxime Douillet, Vincent Morinière, Pauline Krug, Cécile Jeanpierre, Kalman Tory, Olivia Boyer, Anita Burgun, Aude Servais, Remi Salomon, Alexandre Benmerah, Laurence Heidet, Nicolas Garcelon, Corinne Antignac, Mohamad Zaidan, Sophie Saunier, Tania Attié-Bitach, Valerie Comier-Daire, Jean-Michel Rozet, Yaacov Frishberg, Brigitte Llanas, Michel Broyer, Nabil Mohsin, Marie-Alice Macher, Nicole Philip, Véronique Baudouin, Damian Brackman, Chantal Loirat, Marina Charbit, Maud Dehennault, Claude Guyot, Pierre Bataille, Mariet Elting, Georges Deschenes, Andrea Gropman, Geneviève Guest, Marie-France Gagnadoux, Philippe Nicoud, Pierre Cochat, Bruno Ranchin, Albert Bensman, Anne-Marie Guerrot, Bertrand Knebelmann, Ilmay Bilge, Danièle Bruno, Stéphane Burtey, Caroline Rousset Rouvière, Valérie Caudwell, Denis Morin, Hélène Dollfus, Anne Maisin, Christian Hamel, Eric Bieth, Sophie Gie, Judith Goodship, Gwenaelle Roussey, Hermine La Selve, Hubert Nivet, Lucie Bessenay, Mathilde Caillez, Jean Bernard Palcoux, Stéphane Benoît, Philippe Dubot, Marc Fila, Fabienne Giuliano, Daouya Iftene, Michele Kessler, Theresa Kwon, Anine Lahoche, Audrey Laurent, Anne-Laure Leclerc, David Milford, Thomas Neuhaus, Sylvie Odent, Philippe Eckart, Dominique Chauveau, Patrick Niaudet, Horacio Repetto, Sophie Taque, Alexandra Bruel, Alexandra Noel-Botte, Emma Allain Launay, Lisa Allard, Dany Anlicheau, Anne-Laure Adra, Arnaud Garnier, Arvind Nagra, Remy Baatard, Justine Bacchetta, Banu Sadikoglu, Christine Barnerias, Anne Barthelemy, Lina Basel, Nader Bassilios, Hedi Ben Maiz, Fatma Ben Moussa, Faïza Benmati, Romain Berthaud, Aurélia Bertholet, Dominique Blanchier, Jean Jacques Boffa, Karim Bouchireb, Ihab Bouhabel, Zakaria Boukerroucha, Guylhène Bourdat-Michel, Odile Boute, Karine Brochard, Roseline Caumes, Siham Chafai Elalaoui, Bernard Chamontin, Marie Caroline Chastang, Christine Pietrement, Christine Richer, Christophe Legendre, Karin Dahan, Fabienne Dalla-Vale, Damien Thibaudin, Maxime Dauvergne, Salandre Davourie, Martin Debeukelaer, Jean Daniel Delbet, Constantinos Deltas, Denis Graber, Nadège Devillars, Boucar Diouf, Martine Doco Fenzy, Jean-Luc André, Dominique Joly, Alan Fryer, Laetitia Albano, Elisabeth Cassuto, Aline Pincon, Ana Medeira, Annabelle Chaussenot, Anne Mensire-Marinier, Francois Bouissou, Stephane Decramer, Armand Bottani, Aurélie Hummel, Alexandre Karras, Avi Katz, Christine Azema, Bénédicte Janbon, Bernard Roussel, Claude Bonniol, Christiophe Mariat, Gérard Champion, Deborah Chantreuil, Nicolas Chassaing, Christiane Mousson, Christine Baudeau, Delphine Hafdar Cuntz, Cyril Mignot, Laurene Dehoux, Didier Lacombe, Thierry Hannedouche, Elodie Mérieau, Emmanuelle Charlin, Eric Gauthier, Florent Plasse, Stanislas Faguer, Fanny Lebas, Florence Demurger, Francesco Emma, François Cartault, Geneviève Dumont, Nathalie Godefroid, Vincent Guigonis, Sophie Hillaire, Jaap Groothoff, Jan Dudley, Noémie Jourde-Chiche, Khalil El Karoui, Saoussen Krid, Krier Coudert, Larbi Bencheick, Laurent Yver, Marie-Pierre Lavocat, Le Monies De Sagazan, Valerie Leroy, Lise Thibaudin, Liz Ingulli, Lorraine Gwanmesia, Lydie Burglen, Marie-Hélène Saïd-Menthon, Marta Carrera, Mathilde Nizon, Catherine Melander, Michel Foulard, Monique Blayo, Jacques Prinseau, Nadine Jay, Nathalie Brun, Nicolas Camille, François Nobili, Olivier Devuyst, Ouafa Ben Brahim, Paloma Parvex, Laurence Perrin Sabourin, Philippe Blanc, Philippe Vanhille, Pierre Galichon, Sophie Pierrepont, Vincent Planquois, Gwenaelle Poussard, Claire Pouteil Noble, Radia Allal, Raphaelle Bernard, Raynaud Mounet, Rémi Cahen, Renaud Touraine, Claire Rigothier, Amélie Ryckewaert, Mathieu Sacquepee, Salima El Chehadeh, Charlotte Samaille, Shuman Haq, Ari Simckes, Stéphanie Lanoiselée, Stephanie Tellier, Jean-François Subra, Sylvie Cloarec, Julie Tenenbam, Thomas Lamy, Valérie Drouin Garraud, Huguette Valette, Vanina Meyssonnier, Rosa Vargas-Poussou, Yves Snajer, Sandrine Durault, Emmanuelle Plaisier, Etienne Berard, Fadi Fakhouri, Ferielle Louillet, Paul Finielz, Michel Fischbach, Bernard Foliguet, Hélène Francois-Pradier, Florentine Garaix, Marion Gerard, Gianfranco Rizzoni, Brigitte Gilbert, Denis Glotz, Astrid Godron Dubrasquet, Jean-Pierre Grünfeld, Guillaume Bollee, Michelle Hall, Sverker Hansson, Damien Haye, Hélène Taffin, Friedhelm Hildebrandt, Maryvonne Hourmand, Hümya Kayserili, Ivan Tack, Marie Line Jacquemont, Jennifer Fabre-Teste, Cliff Kashtan, Kkoen Van Hoeck, Alexandre Klein, Yannick Knefati, Nine Knoers, Martin Konrad, Alain Lachaux, Isabelle Landru, Gilbert Landthaler, Philippe Lang, Patrick Le Pogamp, Tristan Legris, Catherine Didailler, Thierry Lobbedez, Loïc de Parscau, Lucile Pinson, Hervé Maheut, Marc Duval-Arnould, Marlène Rio, Marie-Claire Gubler, Pierre Merville, Guillaume Mestrallet, Maite Meunier, Karine Moreau, Jérôme Harambat, Graeme Morgan, Georges Mourad, Niksic Stuber, Odile Boespflug-Tanguy, Olivier Dunand, Olivier Niel, Nacera Ouali, Paolo Malvezzi, Pauline Abou Jaoude, Solenne Pelletier, Julie Peltier, M.B. Petersen, Philippe Michel, Philippe Rémy, Jean-Baptiste Philit, Valérie Pichault, Thierry Billette de Villemeur, Bernard Boudailliez, Bruno Leheup, Claire Dossier, Djamal-Dine Djeddi, Yves Berland, Bruno Hurault de Ligny, Susan Rigden, Christophe Robino, Annick Rossi, Sabine Sarnacki, Messaoud Saidani, Albane Brodin Sartorius, Elise Schäfer, Sztriha Laszlo, Marie-Christine Thouret, Angélique Thuillier-Lecouf, Howard Trachtman, Claire Trivin, Michel Tsimaratos, Rita Van Damme-Lombaerts, Marjolaine Willems, Michel Youssef, Ariane Zaloszyc, Alexis Zawodnik, and Marie-Julia Ziliotis
Subjects: Nephrology
Abstract: Nephronophthisis (NPH) is an autosomal-recessive ciliopathy representing one of the most frequent causes of kidney failure in childhood characterized by a broad clinical and genetic heterogeneity. Applied to one of the worldwide largest cohorts of patients with NPH, genetic analysis encompassing targeted and whole exome sequencing identified disease-causing variants in 600 patients from 496 families with a detection rate of 71%. Of 788 pathogenic variants, 40 known ciliopathy genes were identified. However, the majority of patients (53%) bore biallelic pathogenic variants in NPHP1. NPH-causing gene alterations affected all ciliary modules defined by structural and/or functional subdomains. Seventy six percent of these patients had progressed to kidney failure, of which 18% had an infantile form (under five years) and harbored variants affecting the Inversin compartment or intraflagellar transport complex A. Forty eight percent of patients showed a juvenile (5-15 years) and 34% a late-onset disease (over 15 years), the latter mostly carrying variants belonging to the Transition Zone module. Furthermore, while more than 85% of patients with an infantile form presented with extra-kidney manifestations, it only concerned half of juvenile and late onset cases. Eye involvement represented a predominant feature, followed by cerebellar hypoplasia and other brain abnormalities, liver and skeletal defects. The phenotypic variability was in a large part associated with mutation types, genes and corresponding ciliary modules with hypomorphic variants in ciliary genes playing a role in early steps of ciliogenesis associated with juvenile-to-late onset NPH forms. Thus, our data confirm a considerable proportion of late-onset NPH suggesting an underdiagnosis in adult chronic kidney disease.
Published: 2023
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10. Biallelic PRKAG2 Truncating Variants Are Associated with Severe Neonatal Cardiomyopathies

Author: Alexandre Janin, Evan Gouy, Audrey Putoux, Thomas Perouse-de-Monclos, Philippe Chevalier, Adèle Faucherre, Jourdano Mancilla Abaroa, Chris Jopling, Sophie Collardeau Frachon, Jelena Radojevic, Salima El Chehadeh, and Gilles Millat
Subjects: General Medicine
Published: 2023
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11. Type I interferonopathy due to a homozygous loss-of-inhibitory-function mutation in STAT2

Author: Gaofeng Zhu, Mihaly Badonyi, Lina Franklin, Luis Seabra, Gillian I. Rice, null Anne-Boland-Auge, Jean-François Deleuze, Salima El-Chehadeh, Mathieu Anheim, Anne de Saint-Martin, Sandra Pellegrini, Joseph A. Marsh, Yanick J. Crow, and Marie-Therese El-Daher
Subjects: Immunology, Immunology and Allergy
Abstract: Purpose STAT2 is both an effector and negative regulator of type I interferon (IFN-I) signalling. We describe the characterization of a novel homozygous missense STAT2 substitution in a patient with a type I interferonopathy. Methods Whole-genome sequencing (WGS) was used to identify the genetic basis of disease in a patient with features of enhanced IFN-I signalling. After stable lentiviral reconstitution of STAT2-null human fibrosarcoma U6A cells with STAT2 wild type or p.(A219V), we performed quantitative polymerase chain reaction, western blotting, immunofluorescence, and co-immunoprecipitation to functionally characterize the p.(A219V) variant. Results WGS identified a rare homozygous single nucleotide transition in STAT2 (c.656C > T), resulting in a p.(A219V) substitution, in a patient displaying developmental delay, intracranial calcification, and up-regulation of interferon-stimulated gene (ISG) expression in blood. In vitro studies revealed that the STAT2 p.(A219V) variant retained the ability to transduce an IFN-I stimulus. Notably, STAT2 p.(A219V) failed to support receptor desensitization, resulting in sustained STAT2 phosphorylation and ISG up-regulation. Mechanistically, STAT2 p.(A219V) showed defective binding to ubiquitin specific protease 18 (USP18), providing a possible explanation for the chronic IFN-I pathway activation seen in the patient. Conclusion Our data indicate an impaired negative regulatory role of STAT2 p.(A219V) in IFN-I signalling and that mutations in STAT2 resulting in a type I interferonopathy state are not limited to the previously reported R148 residue. Indeed, structural modelling highlights at least 3 further residues critical to mediating a STAT2-USP18 interaction, in which mutations might be expected to result in defective negative feedback regulation of IFN-I signalling.
Published: 2023
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12. Functional and clinical studies reveal pathophysiological complexity of CLCN4-related neurodevelopmental condition

Author: Elizabeth E. Palmer, Michael Pusch, Alessandra Picollo, Caitlin Forwood, Matthew H. Nguyen, Vanessa Suckow, Jessica Gibbons, Alva Hoff, Lisa Sigfrid, Andre Megarbane, Mathilde Nizon, Benjamin Cogné, Claire Beneteau, Fowzan S. Alkuraya, Aziza Chedrawi, Mais O. Hashem, Hannah Stamberger, Sarah Weckhuysen, Arnaud Vanlander, Berten Ceulemans, Sulekha Rajagopalan, Kenneth Nunn, Stéphanie Arpin, Martine Raynaud, Constance S. Motter, Catherine Ward-Melver, Katrien Janssens, Marije Meuwissen, Diane Beysen, Nicola Dikow, Mona Grimmel, Tobias B. Haack, Emma Clement, Amy McTague, David Hunt, Sharron Townshend, Michelle Ward, Linda J. Richards, Cas Simons, Gregory Costain, Lucie Dupuis, Roberto Mendoza-Londono, Tracy Dudding-Byth, Jackie Boyle, Carol Saunders, Emily Fleming, Salima El Chehadeh, Marie-Aude Spitz, Amelie Piton, Bénédicte Gerard, Marie-Thérèse Abi Warde, Gillian Rea, Caoimhe McKenna, Sofia Douzgou, Siddharth Banka, Cigdem Akman, Jennifer M. Bain, Tristan T. Sands, Golder N. Wilson, Erin J. Silvertooth, Lauren Miller, Damien Lederer, Rani Sachdev, Rebecca Macintosh, Olivier Monestier, Deniz Karadurmus, Felicity Collins, Melissa Carter, Luis Rohena, Marjolein H. Willemsen, Charlotte W. Ockeloen, Rolph Pfundt, Sanne D. Kroft, Michael Field, Francisco E. R. Laranjeira, Ana M. Fortuna, Ana R. Soares, Vincent Michaud, Sophie Naudion, Sailaja Golla, David D. Weaver, Lynne M. Bird, Jennifer Friedman, Virginia Clowes, Shelagh Joss, Laura Pölsler, Philippe M. Campeau, Maria Blazo, Emilia K. Bijlsma, Jill A. Rosenfeld, Christian Beetz, Zöe Powis, Kirsty McWalter, Tracy Brandt, Erin Torti, Mikaël Mathot, Shekeeb S. Mohammad, Ruth Armstrong, Vera M. Kalscheuer, UCL - SSS/IREC/MONT - Pôle Mont Godinne, UCL - (MGD) Service de pédiatrie, Growth and Development, Pediatrics, Centre for Medical Genetics, Brussels Heritage Lab, and Medical Genetics
Subjects: Male, DISRUPTION, Chloride Channels/genetics, EXCHANGER, Mutation, Missense, LYSOSOMAL STORAGE DISEASE, VARIANTS, Neurodevelopmental Disorders/genetics, PHENOTYPE, Cellular and Molecular Neuroscience, All institutes and research themes of the Radboud University Medical Center, Genes, X-Linked, CLC CHLORIDE, Medicine and Health Sciences, Humans, Molecular Biology, MUTATION, Biology, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], CHANNELS, LINKED MENTAL-RETARDATION, ASSOCIATION, GENE, Psychiatry and Mental health, Chemistry, Female, Human medicine
Abstract: Missense and truncating variants in the X-chromosome-linked CLCN4 gene, resulting in reduced or complete loss-of-function (LOF) of the encoded chloride/proton exchanger ClC-4, were recently demonstrated to cause a neurocognitive phenotype in both males and females. Through international clinical matchmaking and interrogation of public variant databases we assembled a database of 90 rare CLCN4 missense variants in 90 families: 41 unique and 18 recurrent variants in 49 families. For 43 families, including 22 males and 33 females, we collated detailed clinical and segregation data. To confirm causality of variants and to obtain insight into disease mechanisms, we investigated the effect on electrophysiological properties of 59 of the variants in Xenopus oocytes using extended voltage and pH ranges. Detailed analyses revealed new pathophysiological mechanisms: 25% (15/59) of variants demonstrated LOF, characterized by a “shift” of the voltage-dependent activation to more positive voltages, and nine variants resulted in a toxic gain-of-function, associated with a disrupted gate allowing inward transport at negative voltages. Functional results were not always in line with in silico pathogenicity scores, highlighting the complexity of pathogenicity assessment for accurate genetic counselling. The complex neurocognitive and psychiatric manifestations of this condition, and hitherto under-recognized impacts on growth, gastrointestinal function, and motor control are discussed. Including published cases, we summarize features in 122 individuals from 67 families with CLCN4-related neurodevelopmental condition and suggest future research directions with the aim of improving the integrated care for individuals with this diagnosis.
Published: 2023
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13. Integrative approach to interpret DYRK1A variants, leading to a frequent neurodevelopmental disorder

Author: Marjolaine Willems, Benjamin Durand, Boris Keren, Kristina Pilekær Sørensen, Rosanna Weksberg, Magalie Barth, Christina Fagerberg, Cyril Mignot, Laurence Perrin, Lucas Bronicki, Nathalie Drouot, Imene Boujelbene, Marc Abramowicz, Maria Kibaek, Bertrand Isidor, Thierry Bienvenu, Mathilde Nizon, Perrine Charles, Laurent Pasquier, Yann Herault, Marie Christine Birling, Bruno Delobel, Michel Guipponi, Lydie Burglen, Mélanie Fradin, Anne Sophie Denommé, Florence Demurger, Benjamin Cogné, Sébastien Moutton, Allan Bayat, Frederic Tran Mau Them, Christèle Dubourg, Alice Goldenberg, Christine Francannet, Jean-Louis Mandel, Laurence Faivre, Jérémie Courraud, Anne Marie Guerrot, Julia Metreau, Loréline Genschik, Bénédicte Demeer, Marie Vincent, Mathilde Renaud, Julien Thevenon, Sandrine Passemard, Christine Coubes, Amélie Piton, David Geneviève, Maria del Mar Muniz Moreno, Bénédicte Gérard, Estelle Colin, Valérie Layet, Michèle Mathieu-Dramard, Salima El Chehadeh, Katrine M Johannesen, Julie D. Thompson, Cathrine Elisabeth Tronhjem, Pascale Saugier, Elise Schaefer, Eric Chater-Diehl, Séverine Drunat, Rikke S. Møller, Paul Kuentz, Claire Feger, Albert David, Antonio Vitobello, Marlène Rio, Khaoula Khachnaoui, Joane Svane, Stéphane Auvin, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), The Hospital for sick children [Toronto] (SickKids), Centre hospitalier universitaire de Nantes (CHU Nantes), unité de recherche de l'institut du thorax UMR1087 UMR6291 (ITX), Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Les Hôpitaux Universitaires de Strasbourg (HUS), Hôpital Universitaire de Genève, Children's hospital of Eastern Ontario Research Institute [Ottawa, canada] (CHEO), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Sorbonne Université (SU), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hôpital Arnaud de Villeneuve [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Université de Montpellier (UM), Hôpital Saint Vincent de Paul de Lille, Groupe Hospitalier de l'Institut Catholique de Lille (GHICL), Centre hospitalier Bretagne Atlantique (Morbihan) (CHBA), Hôpital Robert Debré, CHU Dijon, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Hôpital Sud [CHU Rennes], CHU Pontchaillou [Rennes], CHU Clermont-Ferrand, Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Rouen, Normandie Université (NU), The Danish Epilepsy Centre Filadelfia [Dianalund, Denmark], University of Southern Denmark (SDU), Odense University Hospital (OUH), CHU Amiens-Picardie, AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Odense University Hospital [Odense, Denmark], Centre Hospitalier Universitaire [Grenoble] (CHU), Groupe Hospitalier du Havre, Maladies neurodéveloppementales et neurovasculaires (NeuroDiderot (UMR_S_1141 / U1141)), Institut de Recherche sur le Cancer et le Vieillissement (IRCAN), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Centre Hospitalier Universitaire de Nice (CHU Nice), Institut Clinique de la Souris, Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut de psychiatrie et neurosciences de Paris (IPNP - U1266 Inserm), Hôpital Cochin [AP-HP], Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube), École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg (UNISTRA), University of Toronto, Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université, Sorbonne Université, Sorbonne Université-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Matériaux et nanosciences d'Alsace, Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Strasbourg (UNISTRA), Centre for Integrative Biology - CBI (Inserm U964 - CNRS UMR7104 - IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Unité de recherche de l'institut du thorax (ITX-lab), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN), Laboratoire de Génétique Médicale (LGM), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Les Hôpitaux Universitaires de Strasbourg (HUS)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Agence de Biomédecine, Fondation APLM, Fondation Maladies Rares and Fondation Jérome Lejeune, univOAK, Archive ouverte, Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Matériaux et nanosciences d'Alsace (FMNGE), and Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [INFO.INFO-AI] Computer Science [cs]/Artificial Intelligence [cs.AI], DYRK1A, [SDV]Life Sciences [q-bio], [SDV.GEN] Life Sciences [q-bio]/Genetics, Protein Serine-Threonine Kinases, Biology, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], Mice, 03 medical and health sciences, 0302 clinical medicine, Neurodevelopmental disorder, Intellectual Disability, medicine, Animals, Humans, Missense mutation, Kinase activity, Gene, Genetics (clinical), Cellular localization, 030304 developmental biology, Genetics, [SDV.GEN]Life Sciences [q-bio]/Genetics, 0303 health sciences, Protein-Tyrosine Kinases, medicine.disease, Phenotype, Human genetics, 3. Good health, 030220 oncology & carcinogenesis, Microcephaly
Abstract: Purpose: DYRK1A syndrome is among the most frequent monogenic forms of intellectual disability (ID). We refined the molecular and clinical description of this disorder and developed tools to improve interpretation of missense variants, which remains a major challenge in human genetics. Methods: We reported clinical and molecular data for 50 individuals with ID harboring DYRK1A variants and developed (1) a specific DYRK1A clinical score; (2) amino acid conservation data generated from 100 DYRK1A sequences across different taxa; (3) in vitro overexpression assays to study level, cellular localization, and kinase activity of DYRK1A mutant proteins; and (4) a specific blood DNA methylation signature. Results: This integrative approach was successful to reclassify several variants as pathogenic. However, we questioned the involvement of some others, such as p.Thr588Asn, still reported as likely pathogenic, and showed it does not cause an obvious phenotype in mice. Conclusion: Our study demonstrated the need for caution when interpreting variants in DYRK1A, even those occurring de novo. The tools developed will be useful to interpret accurately the variants identified in the future in this gene. Graphic abstract: [Figure not available: see fulltext.]
Published: 2021
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14. Periodontal (formerly type <scp>VIII</scp> ) <scp>Ehlers–Danlos</scp> syndrome: Description of 13 novel cases and expansion of the clinical phenotype

Author: Dan Lipsker, Marie-Cécile Manière, Jean Muller, Agathe Chammas, Aymeric Courval, Véronique Geoffroy, Elise Schaefer, Salma Adham, Salima El Chehadeh, Clarisse Billon, Sébastien Gaertner, Karelle Bénistan, Corinne Stoetzel, Agnès Bloch-Zupan, Anne-Claire Bursztejn, Anthony Reyre, Laurence Bal, Hélène Dollfus, Anne Legrand, Roland Jaussaud, Tiffany Busa, Xavier Jeunemaitre, Catherine Petit, CHU Strasbourg, Institut Pascal (IP), Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), Université Clermont Auvergne (UCA)-Université Clermont Auvergne (UCA), Service Obstétrique [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Laboratoire de Génétique Médicale (LGM), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre national de référence des maladies vasculaires rares, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), CHU Rouen, Normandie Université (NU), UFR Médecine [Santé] - Université Paris Cité (UFR Médecine UPCité), Université Paris Cité (UPCité), Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Université de Montpellier (UM), CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Institut Desbrest de santé publique (IDESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Université Sorbonne Paris Cité (USPC), Centre régional de compétence des Maladies systémiques et auto-immunes rares de l'adulte et Maladies vasculaires rares, Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Institut Charles Sadron (ICS), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Hôpital Raymond Poincaré [AP-HP], Handicap neuromusculaire : Physiopathologie, Biothérapie et Pharmacologies appliquées (END-ICAP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut National de la Santé et de la Recherche Médicale (INSERM), Nanomédecine Régénérative (NanoRegMed), Hôpital de la Timone [CHU - APHM] (TIMONE), CHU Marseille, and Les Hôpitaux Universitaires de Strasbourg (HUS)
Subjects: Adult, Male, 0301 basic medicine, Heterozygote, Pathology, medicine.medical_specialty, Adolescent, 030105 genetics & heredity, Varicose Ulcer, Young Adult, 03 medical and health sciences, Aneurysm, Genetics, medicine, Tooth loss, Humans, ComputingMilieux_MISCELLANEOUS, Genetics (clinical), Aged, Periodontitis, Aortic dissection, Complement C1s, Complement C1r, business.industry, Middle Aged, medicine.disease, Hyperpigmentation, Abdominal aortic aneurysm, Dissection, 030104 developmental biology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Ehlers–Danlos syndrome, Child, Preschool, Mutation, Ehlers-Danlos Syndrome, Female, medicine.symptom, business, Aortic Aneurysm, Abdominal
Abstract: Periodontal Ehlers-Danlos syndrome (pEDS) is a rare condition caused by pathogenic variants in the C1R and C1S genes, encoding subunits C1r and C1s of the first component of the classical complement pathway. It is characterized by early-onset periodontitis with premature tooth loss, pretibial hyperpigmentation and skin fragility. Rare arterial complications have been reported, but venous insufficiency is rarely described. Here we report thirteen novel patients carrying heterozygous pathogenic variants in C1R and C1S including three novel C1S variants (c.962G > C, c.961 T > G and c.961 T > A). In addition to the pEDS phenotype, three patients and one relative displayed widespread venous insufficiency leading to persistent varicose leg ulcers. One patient suffered an intracranial aneurysm with familial vascular complications including thoracic and abdominal aortic aneurysm and dissection and intracranial aneurysm rupture. This work confirms that vascular complications can occur, although they are not frequent, which leads us to propose to carry out a first complete non-invasive vascular evaluation at the time of the diagnosis in pEDS patients. However, larger case series are needed to improve our understanding of the link between complement pathway activation and connective tissue alterations observed in these patients, and to better assess the frequency, type and consequences of the vascular complications.
Published: 2021
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15. Molecular and clinical descriptions of patients with GABA

Author: Pierre-Yves, Maillard, Sarah, Baer, Élise, Schaefer, Béatrice, Desnous, Nathalie, Villeneuve, Anne, Lépine, Alexandre, Fabre, Caroline, Lacoste, Salima, El Chehadeh, Amélie, Piton, Louise Frances, Porter, Caroline, Perriard, Marie-Thérèse Abi, Wardé, Marie-Aude, Spitz, Vincent, Laugel, Gaëtan, Lesca, Audrey, Putoux, Dorothée, Ville, Cyril, Mignot, Delphine, Héron, Rima, Nabbout, Giulia, Barcia, Marlène, Rio, Agathe, Roubertie, Pierre, Meyer, Véronique, Paquis-Flucklinger, Olivier, Patat, Jérémie, Lefranc, Marion, Gerard, Julietta, de Bellescize, Laurent, Villard, Anne, De Saint Martin, and Mathieu, Milh
Subjects: Cohort Studies, Epilepsy, Phenotype, Mutation, Humans, Epilepsy, Generalized, Receptors, GABA-A, Genetic Association Studies, gamma-Aminobutyric Acid
Abstract: γ-Aminobutyric acid (GABA)We collected clinical, electrophysiological, therapeutic, and molecular data from patients with GABAWe gathered the reported patients in three epileptic phenotypes: 15 patients with fever-related epilepsy (40%), 11 with early developmental epileptic encephalopathy (30%), 10 with generalized epilepsy spectrum (27%), and 1 patient without seizures (3%). We did not find a specific phenotype for any gene, but we showed that the location of variants on the transmembrane (TM) segment was associated with a more severe phenotype, irrespective of the GABAGABA
Published: 2022

16. Bi-allelic Variations of SMO in Humans Cause a Broad Spectrum of Developmental Anomalies Due to Abnormal Hedgehog Signaling

Author: Lynn Pais, Anna Pelet, Wilhelmina S. Kerstjens-Frederikse, Christine Bole-Feysot, Yunia Sribudiani, Stanislas Lyonnet, Natasha Shur, Valérie Cormier-Daire, Louise Galmiche, Cécile Masson, Christopher T. Gordon, Chelsea Kois, Céline Huber, John A. Pugh, Simon Sadedin, Thuy-Linh Le, Nicolas Goudin, Tania Attié-Bitach, Susan M. White, Tiong Yang Tan, Geneviève Baujat, Valérie Serre, Xiaomin Dong, Mohammed Zarhrate, Patrick Nitschke, Jeanne Amiel, John Christodoulou, Frans W. Verheijen, Sophie Thomas, R Hofstra, Salima El Chehadeh, Valerie Mayne, Université Paris Cité (UPC), Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPC), Embryology and genetics of human malformation (Equipe Inserm U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPC), Molecular and Physiopathological bases of osteochondrodysplasia - Bases moléculaires et physiopathologiques des ostéochondrodysplasies (Equipe Inserm U1163), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut Jacques Monod (IJM (UMR_7592)), Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPC), Structure Fédérative de Recherche Necker (SFR Necker - UMS 3633 / US24), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPC), Genetics and Development of the Cerebral Cortex (Equipe Inserm U1163), Université de Paris (UP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Université de Paris (UP)-Centre National de la Recherche Scientifique (CNRS), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and Clinical Genetics
Subjects: 0301 basic medicine, Male, Models, Molecular, Developmental Disabilities, [SDV]Life Sciences [q-bio], HIRSCHSPRUNG DISEASE, INTRAFLAGELLAR TRANSPORT PROTEIN, ACTIVATION, 0302 clinical medicine, Neoplasms, Sonic hedgehog, Child, Genetics (clinical), Nuclear Proteins, PRIMARY CILIUM, Smoothened Receptor, Hedgehog signaling pathway, Cell biology, Pedigree, Child, Preschool, Female, Signal Transduction, Patched, Nerve Tissue Proteins, Biology, Zinc Finger Protein Gli2, Article, 03 medical and health sciences, HYPOTHALAMIC HAMARTOMA, Zinc Finger Protein Gli3, GLI2, Ciliogenesis, NERVOUS-SYSTEM DEVELOPMENT, Genetics, Humans, Hedgehog Proteins, Cilia, Hedgehog, Alleles, Base Sequence, SONIC HEDGEHOG, MUTATIONS, Infant, CILIARY, 030104 developmental biology, biology.protein, Smoothened, 030217 neurology & neurosurgery, GLI
Abstract: The evolutionarily conserved hedgehog (Hh) pathway is essential for organogenesis and plays critical roles in postnatal tissue maintenance and renewal. A unique feature of the vertebrate Hh pathway is that signal transduction requires the primary cilium (PC) where major pathway components are dynamically enriched. These factors include smoothened (SMO) and patched, which constitute the core reception system for sonic hedgehog (SHH) as well as GLI transcription factors, the key mediators of the pathway. Here, we report biallelic loss-of-function variations in SMO in seven individuals from five independent families; these variations cause a wide phenotypic spectrum of developmental anomalies affecting the brain (hypothalamic hamartoma and microcephaly), heart (atrioventricular septal defect), skeleton (postaxial polydactyly, narrow chest, and shortening of long bones), and enteric nervous system (aganglionosis). Cells derived from affected individuals showed normal ciliogenesis but severely altered Hh-signal transduction as a result of either altered PC trafficking or abnormal activation of the pathway downstream of SMO. In addition, Hh-independent GLI2 accumulation at the PC tip in cells from the affected individuals suggests a potential function of SMO in regulating basal ciliary trafficking of GLI2 when the pathway is off. Thus, loss of SMO function results in abnormal PC dynamics of key components of the Hh signaling pathway and leads to a large continuum of malformations in humans.
Published: 2020
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17. Widening of the genetic and clinical spectrum of Lamb-Shaffer syndrome, a neurodevelopmental disorder due to SOX5 haploinsufficiency

Author: Ashley N. Sigafoos, Salima El Chehadeh, Marcia C. Willing, Ela Akay, Florian Cherik, Anne-Marie E. Goyette, Vinodh Narayanan, Diane Masser-Frye, Catherine Karimov, Rhonda E. Schnur, Rebekah Bressi, Rhys H. Thomas, Gary D. Clark, Tina Barbaro-Dieber, Jill A. Rosenfeld, Carlos A. Bacino, Maria J. Guillen Sacoto, Laura Russell, Kristin Lindstrom, Caroline Schluth-Bolard, Xia Wang, Yvonne Hilhorst-Hofstee, Marcelo Vargas, Zehua Zhu, Ash Zawerton, Boris Keren, Mariëtte J.V. Hoffer, Isabelle Marey, Alice Poisson, Daphné Lehalle, Maries Joseph, Gaetan Lesca, Simon Zwolinski, Laurence Perrin, Rhoda Akilapa, Emilia K. Bijlsma, Christel Depienne, Amélie Piton, Claire G. Salter, Lucie Dupuis, Daryl A. Scott, Jolien S. Klein Wassink-Ruiter, Benjamin Cogné, Mathilde Nizon, Richard Chang, Kirsty McWalter, Myriam Srour, Perrine Charles, Anne-Claude Tabet, Natalie Canham, Sylvie Odent, Caroline Nava, Karl J. Clark, Elizabeth J. Bhoj, Jonathan Levy, Keri Ramsey, Yves Alembik, Lucia Ortega, Sophie Dupuis-Girod, Shoji Ichikawa, Christine Francannet, Marta Bertoli, Christèle Dubourg, Eric W. Klee, Ange-Line Bruel, Sebastien Moutton, Emily Fassi, Anthony Vandersteen, Abdul Haseeb, Antonina Wojcik, Patrick R. Blackburn, Lynne M. Bird, Patrick Rump, Véronique Lefebvre, Alma Kuechler, Sophie Nambot, Keren Machol, Cyril Mignot, Andreas Hartmann, Rossana Sanchez Russo, Erica H. Gerkes, Sylvie Jaillard, Roberto Mendoza-Londono, Trevor Cole, Pauline Monin, Cleveland Clinic, Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Génétique humaine et fonctions cognitives - Human Genetics and Cognitive Functions (GHFC (UMR_3571 / U-Pasteur_1)), Institut Pasteur [Paris]-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Département de génétique [Robert Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre de recherche en neurosciences de Lyon (CRNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Hospices Civils de Lyon (HCL), Centre d'Etude et de Recherche Multimodal Et Pluridisciplinaire en imagerie du vivant (CERMEP - imagerie du vivant), Université de Lyon-Université de Lyon-CHU Grenoble-Hospices Civils de Lyon (HCL)-CHU Saint-Etienne-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Pontchaillou [Rennes], Institut de recherche en santé, environnement et travail (Irset), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université d'Angers (UA), Center for Human and Clinical Genetics, Leiden University Medical Center (LUMC), Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), unité de recherche de l'institut du thorax UMR1087 UMR6291 (ITX), Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Department of Health Sciences Research [Mayo Clinic] (HSR), Mayo Clinic, This research was funded in part by the Agence Nationale de la Recherche and European High-Functioning Autism Network (ANR EUHFAUTISM), the Assistance Publique–Hôpitaux de Paris (AP-HP), the Institut National de la Santé et de la Recherche Médicale (INSERM), the BioPsy labex (to Christel Depienne and C.N.) and the Association Française du Syndrome Gilles de la Tourette (AFSGT) to Christel Depienne. It was also funded by the Cleveland Clinic Lerner Research Institute (LRI Chair’s Innovative Research Award to V.L.), and by Harper’s Quest and the LAMSHF Syndrome Research Fund (donations to V.L.) and the Center for Individualized Medicine, Mayo Clinic. This study makes use of data generated by the DECIPHER community and the Deciphering Developmental Disorders (DDD) Study, which is funded by the Wellcome Trust. The DDD study presents independent research commissioned by the Health Innovation Challenge Fund (grant number HICF-1009-003), a parallel funding partnership between Wellcome and the Department of Health, and the Wellcome Sanger Institute (grant number WT098051). The views expressed in this publication are those of the author(s) and not necessarily those of Wellcome or the Department of Health. The study has UK Research Ethics Committee approval (10/H0305/83, granted by the Cambridge South REC, and GEN/284/12 granted by the Republic of Ireland REC). The research team acknowledges the support of the National Institute for Health Research, through the Comprehensive Clinical Research Network., We thank the patients and their families for their participation in this study, and the C4RCD Research Group (Newell Belnap, Amanda Courtright, Ana Claasen, David Craig, Matt Huentelman, Madison LaFleur, Sampathkumar Rangasamy, Ryan Richholt, Isabelle Schrauwen, Ashley L. Siniard, and Szabolics Szelinger) for providing clinical information on patient P18., Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [APHP]-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut Pasteur [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Centre d'Exploration et de Recherche Médicales par Émission de Positons (CERMEP), Université Joseph Fourier - Grenoble 1 (UJF)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-CHU Grenoble-Hospices Civils de Lyon (HCL)-CHU Saint-Etienne-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)
Subjects: Male, Medizin, Haploinsufficiency, L-SOX5, VARIANTS, 0302 clinical medicine, Neurodevelopmental disorder, Intellectual disability, Missense mutation, 2.1 Biological and endogenous factors, Aetiology, Child, Genetics (clinical), Genetics, Pediatric, Genetics & Heredity, 0303 health sciences, Pedigree, FAMILY, DNA-Binding Proteins, developmental delay, TRANSCRIPTION FACTORS, Phenotype, intellectual disability, Child, Preschool, missense variants, Female, SOXD Transcription Factors, Adult, EXPRESSION, Adolescent, Intellectual and Developmental Disabilities (IDD), Clinical Sciences, Mutation, Missense, autism, Cell fate determination, Biology, LONG FORM, SEQUENCE, Article, 03 medical and health sciences, Young Adult, Rare Diseases, Clinical Research, CARTILAGE, Intellectual Disability, medicine, Animals, Humans, Language Development Disorders, Genetic Predisposition to Disease, Preschool, Transcription factor, Gene, 030304 developmental biology, [SDV.GEN]Life Sciences [q-bio]/Genetics, MUTATIONS, Human Genome, Infant, medicine.disease, Brain Disorders, Neurodevelopmental Disorders, Deciphering Developmental Disorder Study, Mutation, Autism, epilepsy, Missense, 030217 neurology & neurosurgery, GENERATION
Abstract: International audience; PURPOSE: Lamb-Shaffer syndrome (LAMSHF) is a neurodevelopmental disorder described in just over two dozen patients with heterozygous genetic alterations involving SOX5, a gene encoding a transcription factor regulating cell fate and differentiation in neurogenesis and other discrete developmental processes. The genetic alterations described so far are mainly microdeletions. The present study was aimed at increasing our understanding of LAMSHF, its clinical and genetic spectrum, and the pathophysiological mechanisms involved.METHODS: Clinical and genetic data were collected through GeneMatcher and clinical or genetic networks for 41 novel patients harboring various types of SOX5 alterations. Functional consequences of selected substitutions were investigated.RESULTS: Microdeletions and truncating variants occurred throughout SOX5. In contrast, most missense variants clustered in the pivotal SOX-specific high-mobility-group domain. The latter variants prevented SOX5 from binding DNA and promoting transactivation in vitro, whereas missense variants located outside the high-mobility-group domain did not. Clinical manifestations and severity varied among patients. No clear genotype-phenotype correlations were found, except that missense variants outside the high-mobility-group domain were generally better tolerated.CONCLUSIONS:This study extends the clinical and genetic spectrum associated with LAMSHF and consolidates evidence that SOX5 haploinsufficiency leads to variable degrees of intellectual disability, language delay, and other clinical features.
Published: 2020
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18. Expanding the phenotypic spectrum of ARCN1-related syndrome

Author: Alyssa L. Ritter, Jessica Gold, Hiroshi Hayashi, Amanda M. Ackermann, Stephanie Hanke, Cara Skraban, Sanmati Cuddapah, Elizabeth Bhoj, Dong Li, Yukiko Kuroda, Jessica Wen, Ryojun Takeda, Audrey Bibb, Salima El Chehadeh, Amélie Piton, Jeanine Ohl, Mary K. Kukolich, Keisuke Nagasaki, Kohji Kato, Tomoo Ogi, Tricia Bhatti, Pierre Russo, Bryan Krock, Jill R. Murrell, Jennifer A. Sullivan, Vandana Shashi, Nicholas Stong, Hakon Hakonarson, Kentaro Sawano, Erin Torti, Rebecca Willaert, Yue Si, William Ross Wilcox, Katrine Verena Wirgenes, Kristian Thomassen, Katherine Carlotti, Angelika Erwin, Joanna Lazier, Thorsten Marquardt, Miao He, Andrew C. Edmondson, and Kosuke Izumi
Subjects: Hepatoblastoma, Male, Fetal Growth Retardation, Liver Neoplasms, Micrognathism, Dwarfism, Syndrome, Article, Cataract, Phenotype, Intellectual Disability, Humans, Female, Child, Genetics (clinical)
Abstract: PURPOSE: This study aimed to describe the phenotypic and molecular characteristics of ARCN1-related syndrome. METHODS: Patients with ARCN1 variants were identified, and clinician researchers were connected using GeneMatcher and physician referrals. Clinical histories were collected from each patient. RESULTS: In total, we identified 14 cases of ARCN1-related syndrome, (9 pediatrics, and 5 fetal cases from 3 families). The clinical features these newly identified cases were compared to 6 previously reported cases for a total of 20 cases. Intrauterine growth restriction, micrognathia, and short stature were present in all patients. Other common features included prematurity (11/15, 73.3%), developmental delay (10/14, 71.4%), genitourinary malformations in males (6/8, 75%), and microcephaly (12/15, 80%). Novel features of ARCN1-related syndrome included transient liver dysfunction and specific glycosylation abnormalities during illness, giant cell hepatitis, hepatoblastoma, cataracts, and lethal skeletal manifestations. Developmental delay was seen in 73% of patients, but only 3 patients had intellectual disability, which is less common than previously reported. CONCLUSION: ARCN1-related syndrome presents with a wide clinical spectrum ranging from a severe embryonic lethal syndrome to a mild syndrome with intrauterine growth restriction, micrognathia, and short stature without intellectual disability. Patients with ARCN1-related syndrome should be monitored for liver dysfunction during illness, cataracts, and hepatoblastoma. Additional research to further define the phenotypic spectrum and possible genotype–phenotype correlations are required.
Published: 2022

19. IRAK1 Duplication in MECP2 Duplication Syndrome Does Not Increase Canonical NF-κB-Induced Inflammation

Author: Ilona Gottschalk, Uwe Kölsch, Dimitrios L. Wagner, Jonas Kath, Stefania Martini, Renate Krüger, Anne Puel, Jean-Laurent Casanova, Aleksandra Jezela-Stanek, Rainer Rossi, Salima El Chehadeh, Hilde Van Esch, and Horst von Bernuth
Subjects: Science & Technology, DE-NOVO-MECP2 DUPLICATION, CLINICAL-FEATURES, Immunology, FUNCTIONAL DISOMY, Xq28 Duplication syndrome, Inborn errors of immunity, INCLUDING MECP2, Methyl CpG binding protein 2 (MECP2), MENTAL-RETARDATION SYNDROME, INHERITED DUPLICATION, GENE DUPLICATION, Methyl CpG binding protein 2 (MECP2) duplication syndrome, COPY-NUMBER, X-CHROMOSOME, Canonical NF-kappa B signaling, EPILEPTIC SPASMS, Immunology and Allergy, Interleukin-1 receptor-associated kinase 1 (IRAK1), Life Sciences & Biomedicine
Abstract: Abstract Purpose Besides their developmental and neurological phenotype, most patients with MECP2/IRAK1 duplication syndrome present with recurrent and severe infections, accompanied by strong inflammation. Respiratory infections are the most common cause of death. Standardized pneumological diagnostics, targeted anti-infectious treatment, and knowledge of the underlying pathomechanism that triggers strong inflammation are unmet clinical needs. We investigated the influence of IRAK1 overexpression on the canonical NF-κB signaling as a possible cause for excessive inflammation in these patients. Methods NF-κB signaling was examined by measuring the production of proinflammatory cytokines and evaluating the IRAK1 phosphorylation and degradation as well as the IκBα degradation upon stimulation with IL-1β and TLR agonists in SV40-immortalized fibroblasts, PBMCs, and whole blood of 9 patients with MECP2/IRAK1 duplication syndrome, respectively. Results Both, MECP2/IRAK1-duplicated patients and healthy controls, showed similar production of IL-6 and IL-8 upon activation with IL-1β and TLR2/6 agonists in immortalized fibroblasts. In PBMCs and whole blood, both patients and controls had a similar response of cytokine production after stimulation with IL-1β and TLR4/2/6 agonists. Patients and controls had equivalent patterns of IRAK1 phosphorylation and degradation as well as IκBα degradation upon stimulation with IL-1β. Conclusion Patients with MECP2/IRAK1 duplication syndrome do not show increased canonical NF-κB signaling in immortalized fibroblasts, PBMCs, and whole blood. Therefore, we assume that these patients do not benefit from a therapeutic suppression of this pathway.
Published: 2022

20. MYT1L-associated neurodevelopmental disorder: description of 40 new cases and literature review of clinical and molecular aspects

Author: James W. Wheless, Thierry Frebourg, Robert Olaso, Rosemarie Smith, Kelly Nori, François Lecoquierre, Delphine Héron, Roseline Caumes, Anne Boland, Ange-Line Bruel, Candy Kumps, Gaël Nicolas, Sarah Stewart, Sophie Rondeau, Diane Doummar, Marlène Rio, Giulia Barcia, Anne-Marie Guerrot, Gwenaël Le Guyader, Alexandra Afenjar, Sarah Vergult, Karine Poirier, Juliette Coursimault, Jennifer Morrison, Amy Kritzer, Anne-Sophie Alaix, Rebecca Hernan, Anne-Sophie Denommé-Pichon, Sabine Sigaudy, Christine Coubes, Pascale Saugier-Veber, Francisca Millan Zamora, Austin Larson, Michelle M. Morrow, Christine Poitou, Björn Menten, Mathilde Nizon, Thomas Smol, Elise Schaefer, Bénédicte Gérard, Charles Coutton, Salima El Chehadeh, Fanggeng Zou, Stéphanie Valence, Anita Shanmugham, Wendy K. Chung, Bert Callewaert, Christina Kresge, Arnold Munnich, Beth A. Pletcher, Laurence Faivre, Estelle Colin, Laurence Colleaux, Patricia G Wheeler, Annelies Dheedene, Frédéric Tran Mau-Them, Jean-François Deleuze, Claude Houdayer, Jeanne Amiel, Frédéric Bilan, Marine Tessarech, Bertrand Isidor, Guillaume Jouret, Cyril Mignot, Benjamin Cogné, Shuxi Liu, Boris Keren, Françoise Devillard, Catherine Schramm, Margaret Helm, Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), GeneDx [Gaithersburg, MD, USA], Centre hospitalier universitaire de Poitiers (CHU Poitiers), Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Institut de génétique médicale d’Alsace, Centre hospitalier universitaire de Nantes (CHU Nantes), Hôpital Trousseau, Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Sorbonne Université (SU), Institute for Advanced Biosciences / Institut pour l'Avancée des Biosciences (Grenoble) (IAB), Centre Hospitalier Universitaire [Grenoble] (CHU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang - Auvergne-Rhône-Alpes (EFS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), CHU Grenoble, Institut Necker Enfants-Malades (INEM - UM 111 (UMR 8253 / U1151)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Marseille medical genetics - Centre de génétique médicale de Marseille (MMG), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Imagine - Institut des maladies génétiques (IMAGINE - U1163), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Ghent University Hospital, Columbia University Irving Medical Center (CUIMC), University of Colorado Anschutz [Aurora], University of Tennessee System, Rutgers New Jersey Medical School (NJMS), Rutgers University System (Rutgers), Université de Lille, Hôpital de la Timone [CHU - APHM] (TIMONE), CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Maine Medical Center, Arnold Palmer Hospital, Boston Children's Hospital, National Center of Genetics, Centre National de Recherche en Génomique Humaine (CNRGH), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), and ANR-10-INBS-0009,France-Génomique,Organisation et montée en puissance d'une Infrastructure Nationale de Génomique(2010)
Subjects: Male, Bioinformatics, Epilepsy, 0302 clinical medicine, Neurodevelopmental disorder, MESH: Child, Intellectual disability, Missense mutation, MESH: Obesity, MESH: Genetic Variation, MESH: Nerve Tissue Proteins, Child, Genetics (clinical), MESH: Genetic Association Studies, MESH: Heterozygote, 0303 health sciences, MESH: Transcription Factors, MESH: Infant, 3. Good health, Phenotype, MESH: Feeding and Eating Disorders, MESH: Young Adult, Child, Preschool, MESH: Epilepsy, Learning disability, Female, medicine.symptom, Adult, Heterozygote, Adolescent, Language delay, Nerve Tissue Proteins, Biology, MESH: Phenotype, MESH: Language Development Disorders, Feeding and Eating Disorders, Young Adult, 03 medical and health sciences, Genetics, medicine, Humans, Language Development Disorders, Obesity, Genetic Association Studies, 030304 developmental biology, MESH: Neurodevelopmental Disorders, MESH: Adolescent, MESH: Humans, MESH: Child, Preschool, Genetic Variation, Infant, MESH: Adult, medicine.disease, Human genetics, MESH: Male, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Neurodevelopmental Disorders, Autism, MESH: Female, 030217 neurology & neurosurgery, Transcription Factors
Abstract: International audience; Pathogenic variants of the myelin transcription factor-1 like (MYT1L) gene include heterozygous missense, truncating variants and 2p25.3 microdeletions and cause a syndromic neurodevelopmental disorder (OMIM#616,521). Despite enrichment in de novo mutations in several developmental disorders and autism studies, the data on clinical characteristics and genotype-phenotype correlations are scarce, with only 22 patients with single nucleotide pathogenic variants reported. We aimed to further characterize this disorder at both the clinical and molecular levels by gathering a large series of patients with MYT1L-associated neurodevelopmental disorder. We collected genetic information on 40 unreported patients with likely pathogenic/pathogenic MYT1L variants and performed a comprehensive review of published data (total = 62 patients). We confirm that the main phenotypic features of the MYT1L-related disorder are developmental delay with language delay (95%), intellectual disability (ID, 70%), overweight or obesity (58%), behavioral disorders (98%) and epilepsy (23%). We highlight novel clinical characteristics, such as learning disabilities without ID (30%) and feeding difficulties during infancy (18%). We further describe the varied dysmorphic features (67%) and present the changes in weight over time of 27 patients. We show that patients harboring highly clustered missense variants in the 2-3-ZNF domains are not clinically distinguishable from patients with truncating variants. We provide an updated overview of clinical and genetic data of the MYT1L-associated neurodevelopmental disorder, hence improving diagnosis and clinical management of these patients.
Published: 2022
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21. A homozygous MED11 C-terminal variant causes a lethal neurodegenerative disease

Author: Elisa Calì, Sheng-Jia Lin, Clarissa Rocca, Yavuz Sahin, Aisha Al Shamsi, Salima El Chehadeh, Myriam Chaabouni, Kshitij Mankad, Evangelia Galanaki, Stephanie Efthymiou, Sniya Sudhakar, Alkyoni Athanasiou-Fragkouli, Tamer Çelik, Nejat Narlı, Sebastiano Bianca, David Murphy, Francisco Martins De Carvalho Moreira, null Andrea Accogli, Cassidy Petree, Kevin Huang, Kamel Monastiri, Masoud Edizadeh, Rosaria Nardello, Marzia Ognibene, Patrizia De Marco, Martino Ruggieri, Federico Zara, Pasquale Striano, Yavuz Şahin, Lihadh Al-Gazali, Marie Therese Abi Warde, Benedicte Gerard, Giovanni Zifarelli, Christian Beetz, Sara Fortuna, Miguel Soler, Enza Maria Valente, Gaurav Varshney, Reza Maroofian, Vincenzo Salpietro, Henry Houlden, Michael G. Hannah, Enrico Bugiardini, Yamna Kriouile, Mohamed El Khorassani, Mhammed Aguennouz, Stanislav Groppa, Blagovesta Marinova Karashova, Gabriella Di Rosa, Jatinder S. Goraya, Tipu Sultan, Daniela Avdjieva, Hadil Kathom, Radka Tincheva, Selina Banu, Pierangelo Veggiotti, Alberto Verrotti, Salvatore Savasta, Alfons Macaya Ruiz, Barbara Garavaglia, Eugenia Borgione, Savvas Papacostas, Chiara Compagnoni, Alessandra Piccirilli, Michail Vikelis, Viorica Chelban, Rauan Kaiyrzhanov, Andrea Cortese, Roisin Sullivan, Eleni Zamba Papanicolaou, Efthymios Dardiotis, Shazia Maqbool, Shahnaz Ibrahim, Salman Kirmani, Nuzhat Noureen Rana, Osama Atawneh, Shen-Yang Lim, Farooq Shaikh, Annarita Scardamaglia, George Koutsis, Salvatore Mangano, Carmela Scuderi, Giovanna Morello, Massimo Zollo, Gali Heimer, Issam Al-Khawaja, Fuad Al-Mutairi, Fowzan S. Alkuraya, Mie Rizig, Chingiz Shashkin, Nazira Zharkynbekova, Kairgali Koneyev, Ganieva Manizha, Maksud Isrofilov, Ulviyya Guliyeva, Kamran Salayev, Samson Khachatryan, Georgia Xiromerisiou, Cleanthe Spanaki, Arianna Tucci, Chiara Fiorillo, Federico Rissotto, Francina Munell, Antonella Gagliano, Farida Jan, Roberto Chimenz, Eloisa Gitto, Caterina Cuppari, Carmelo Romeo, Francesca Magrinelli, Neerja Gupta, Madhulika Kabra, Hanene Benrhouma, Meriem Tazir, Luca Zagaroli, Claudia Caloisi, Cecilia Fabiano, Gabriella Bottone, Giovanni Farello, Sandra Di Fabio, Makram Obeid, Sophia Bakhtadze, Nebal W. Saadi, Maha S. Zaki, Chahnez C. Triki, Majdi Kara, Vincenzo Belcastro, Nicola Specchio, Ehsan G. Karimiani, Ahmed M. Salih, Luca A. Ramenghi, Emanuele David, Riccardo Curró, Maria Laura Iezzi, Giulia Iapadre, Giuliana Nanni, Giovanna Scorrano, Maria F. Fiorile, Francesco Brancati, Giovanna Di Falco, Luana Mandarà, Giuseppe Barrano, Maurizio Elia, Gaetano Terrone, Francesca F. Operto, Mariella Valenzise, Ylenia Della Rocca, Francesca Zazzeroni, Edoardo Alesse, Filippo Manti, Serena Galosi, Francesca Nardecchia, Vincenzo Leuzzi, Erica Pironti, Greta Amore, Giorgia Ceravolo, Faisal Zafar, Ehsan Ullah, Erum Afzal, Iram Javed, Fatima Rahman, Muhammad Mehboob Ahmed, Pasquale Parisi, Paola Borgia, Giuseppe D. Mangano, Francesco Chiarelli, Queen Square Genomics, and Tıp Fakültesi
Subjects: Mediator Complex, Homozygote, Human mediator complex, MED11, MEDopathies, Neurodegenerative Diseases, Human Mediator Complex, Animals, Humans, RNA, Zebrafish, Microcephaly, Medopathies, Genetics (clinical)
Abstract: Purpose: The mediator (MED) multisubunit-complex modulates the activity of the transcriptional machinery, and genetic defects in different MED subunits (17, 20, 27) have been implicated in neurologic diseases. In this study, we identified a recurrent homozygous variant in MED11 (c.325C>T; p.Arg109Ter) in 7 affected individuals from 5 unrelated families. Methods: To investigate the genetic cause of the disease, exome or genome sequencing were performed in 5 unrelated families identified via different research networks and Matchmaker Exchange. Deep clinical and brain imaging evaluations were performed by clinical pediatric neurologists and neuroradiologists. The functional effect of the candidate variant on both MED11 RNA and protein was assessed using reverse transcriptase polymerase chain reaction and western blotting using fibroblast cell lines derived from 1 affected individual and controls and through computational approaches. Knockouts in zebrafish were generated using clustered regularly interspaced short palindromic repeats/Cas9. Results: The disease was characterized by microcephaly, profound neurodevelopmental impairment, exaggerated startle response, myoclonic seizures, progressive widespread neurodegeneration, and premature death. Functional studies on patient-derived fibroblasts did not show a loss of protein function but rather disruption of the C-terminal of MED11, likely impairing binding to other MED subunits. A zebrafish knockout model recapitulates key clinical phenotypes. Conclusion: Loss of the C-terminal ofMED subunit 11 may affect its binding efficiency to otherMED subunits, thus implicating the MED-complex stability in brain development and neurodegeneration.
Published: 2022

22. Prenatal diagnosis of cerebro‐oculo‐facio‐skeletal syndrome: Report of three fetuses and review of the literature

Author: Tania Attié-Bitach, Sarah Baer, Jamel Chelly, Romain Favre, Ferechté Razavi, Pauline Le Van Quyen, Nadège Calmels, Suzanne Chartier, Vincent Laugel, Salima El Chehadeh, Cathy Obringer, Séverine Bacrot, Maryse Bonnière, Lucile Boutaud, and Maria Cristina Antal
Subjects: 0301 basic medicine, Arthrogryposis, Pathology, medicine.medical_specialty, Fetus, Microcephaly, business.industry, Pontocerebellar hypoplasia, Prenatal diagnosis, Neuropathology, 030105 genetics & heredity, medicine.disease, 03 medical and health sciences, 030104 developmental biology, Genetics, medicine, Congenital cataracts, Thymus hyperplasia, medicine.symptom, business, Genetics (clinical)
Abstract: Cerebro-oculo-facio-skeletal syndrome (COFS) is a rare autosomal recessive neurodegenerative disease belonging to the family of DNA repair disorders, characterized by microcephaly, congenital cataracts, facial dysmorphism and arthrogryposis. Here, we describe the detailed morphological and microscopic phenotype of three fetuses from two families harboring ERCC5/XPG likely pathogenic variants, and review the five previously reported fetal cases. In addition to the classical features of COFS, the fetuses display thymus hyperplasia, splenomegaly and increased hematopoiesis. Microencephaly is present in the three fetuses with delayed development of the gyri, but normal microscopic anatomy at the supratentorial level. Microscopic anomalies reminiscent of pontocerebellar hypoplasia are present at the infratentorial level. In conclusion, COFS syndrome should be considered in fetuses when intrauterine growth retardation is associated with microcephaly, arthrogryposis and ocular anomalies. Further studies are needed to better understand XPG functions during human development.
Published: 2020
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23. Serpin B1 defect and increased apoptosis of neutrophils in Cohen syndrome neutropenia

Author: Laurence Duplomb, Jean-Noël Bastie, Edward Blair, Julie Riviere, Laurent Delva, Romain Da Costa, Arlette Hammann, Julien Thevenon, Bernard Aral, Jamal Ghoumid, Marie-Anne Gougerot-Pocidalo, Arnaud Lafon, Christel Thauvin-Robinet, Alain Schmitt, Patrick Edery, Virginie Carmignac, Julien Guy, Nathalie Droin, Eric Solary, Laurence Faivre, Gaëtan Jego, Laurence Dubrez, Jessica Racine, Salima El Chehadeh-Djebbar, François Girodon, and Claude Capron
Subjects: Adult, Male, Programmed cell death, Neutropenia, Adolescent, Neutrophils, Developmental Disabilities, Down-Regulation, Apoptosis, Fingers, Young Adult, 03 medical and health sciences, 0302 clinical medicine, Intellectual Disability, Drug Discovery, Myopia, Humans, Medicine, Obesity, Child, Serpins, Genetics (clinical), Cohen syndrome, biology, business.industry, Retinal Degeneration, SERPINB1, Middle Aged, medicine.disease, VPS13B, Child, Preschool, Neutrophil elastase, Mutation, Immunology, Microcephaly, biology.protein, Unfolded protein response, Muscle Hypotonia, Molecular Medicine, Female, business, 030215 immunology
Abstract: Cohen syndrome (CS) is a rare genetic disorder due to mutations in VPS13B gene. Among various clinical and biological features, CS patients suffer from inconsistent neutropenia, which is associated with recurrent but minor infections. We demonstrate here that this neutropenia results from an exaggerate rate of neutrophil apoptosis. Besides this increased cell death, which occurs in the absence of any endoplasmic reticulum stress or defect in neutrophil elastase (ELANE) expression or localization, all neutrophil functions appeared to be normal. We showed a disorganization of the Golgi apparatus in CS neutrophils precursors, that correlates with an altered glycosylation of ICAM-1 in these cells, as evidenced by a migration shift of the protein. Furthermore, a striking decrease in the expression of SERPINB1 gene, which encodes a critical component of neutrophil survival, was detected in CS neutrophils. These abnormalities may account for the excessive apoptosis of neutrophils leading to neutropenia in CS. KEY MESSAGES: Cohen syndrome patients' neutrophils display normal morphology and functions. Cohen syndrome patients' neutrophils have an increased rate of spontaneous apoptosis compared to healthy donors' neutrophils. No ER stress or defective ELA2 expression or glycosylation was observed in Cohen syndrome patients' neutrophils. SerpinB1 expression is significantly decreased in Cohen syndrome neutrophils as well as in VPS13B-deficient cells.
Published: 2019
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24. Author response for 'Periodontal (formerly type VIII ) Ehlers‐Danlos syndrome: description of 13 novel cases and expansion of the clinical phenotype'

Author: Anne Legrand, Xavier Jeunemaitre, Aymeric Courval, Elise Schaefer, Roland Jaussaud, Clarisse Billon, Agathe Chammas, Corinne Stoetzel, Marie-Cécile Manière, Sébastien Gaertner, Anthony Reyre, Agnès Bloch-Zupan, Dan Lipsker, Jean Muller, Salima El Chehadeh, Tiffany Busa, Laurence Bal, Hélène Dollfus, Catherine Petit, Karelle Benistan, Véronique Geoffroy, Salma Adham, and Anne-Claire Bursztejn
Subjects: medicine.medical_specialty, business.industry, Ehlers–Danlos syndrome, medicine, Type viii, Clinical phenotype, business, medicine.disease, Dermatology
Published: 2021
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25. Integrative approach to interpret DYRK1A variants, leading to a frequent neurodevelopmental disorder

Author: Anne-Sophie Denommé, Christine Francannet, Loréline Genschik, Claire Feger, Maria Kibaek, Imene Boujelbene, Paul Kuentz, Michel Guipponi, Marie-Christine Birling, Sébastien Moutton, Allan Bayat, Frederic Tran Mau Them, Mathilde Renaud, Joane Svane, Yann Herault, Sandrine Passemard, Christèle Dubourg, Mélanie Fradin, Marjolaine Willems, Julien Thevenon, Rosanna Weksberg, Bertrand Isidor, David Geneviève, Benjamin Cogné, Magalie Barth, Laurence Faivre, Jérémie Courraud, Boris Keren, Albert David, Laurence Perrin, Anne-Marie Guerrot, Christine Coubes, Thierry Bienvenu, Alice Goldenberg, Bénédicte Gérard, Amélie Piton, Lucas Bronicki, Julia Metreau, Mathilde Nizon, Elise Schaefer, Eric Chater-Diehl, Maria del Mar Muniz Moreno, Bruno Delobel, Katrine M Johannesen, Florence Demurger, Nathalie Drouot, Marie Vincent, Antonio Vitobello, Kristina Pilekær Sørensen, Christina Fagerberg, Cyril Mignot, Estelle Colin, Valérie Layet, Michèle Mathieu-Dramard, Jean-Louis Mandel, Cathrine Elisabeth Tronhjem, Benjamin Durand, Pascale Saugier, Séverine Drunat, Rikke S. Møller, Perrine Charles, Lydie Burglen, Bénédicte Demeer, Salima El Chehadeh, Marc Abramowicz, Laurent Pasquier, and Julie D. Thompson
Subjects: Genetics, Neurodevelopmental disorder, DYRK1A, Intellectual disability, medicine, Missense mutation, Kinase activity, Biology, medicine.disease, Phenotype, Human genetics, Cellular localization
Abstract: ABBSTRACTDYRK1A-related intellectual disability (ID) is among the most frequent monogenic form of ID. We refined the description of this disorder by reporting clinical and molecular data of forty individuals with ID harboringDYRK1Avariants. We developed a combination of tools to interpret missense variants, which remains a major challenge in human genetics: i) a specificDYRK1Aclinical score, ii) amino acid conservation data generated from one hundred of DYRK1A sequences across different taxa, iii)in vitrooverexpression assays to study level, cellular localization, and kinase activity of DYRK1A mutant proteins, and iv) a specific blood DNA methylation signature. This integrative approach was successful to reclassify several variants as pathogenic. However, we questioned the involvement of some others, such as p.Thr588Asn, yet reported as pathogenic, and showed it does not cause obvious phenotype in mice, emphasizing the need to take care when interpreting variants, even those occurringde novo.
Published: 2021
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26. An improved method to extract DNA from 1 ml of uncultured amniotic fluid from patients at less than 16 weeks' gestation.

Author: Anne-Laure Mosca-Boidron, Laurence Faivre, Serge Aho, Nathalie Marle, Caroline Truntzer, Thierry Rousseau, Clémence Ragon, Muriel Payet, Christelle Thauvin-Robinet, Julien Thevenon, Salima El Chehadeh, Fréderic Huet, Paul Sagot, Francine Mugneret, and Patrick Callier
Subjects: Medicine, Science
Abstract: The aim of this study was to develop an improved technique for DNA extraction from 1 ml of uncultured AF from patients with a gestational age less than 16 weeks and to allow the use of array-CGH without DNA amplification. The DNA extraction protocol was tested in a series of 90 samples including 41 of uncultured AF at less than 16 weeks of gestation. Statistical analyses were performed using linear regression. To evaluate the sensitivity and the specificity of array-CGH on 1 ml of uncultured AF, five samples with an abnormal karyotype (three with aneuploidy, two with structural abnormalities) and five with a normal karyotype were studied. This protocol was reproducible and we were able to show a great improvement with higher yield of DNA obtained from all patients, including those with a gestational age less than 16 weeks (p = 0.003). All chromosomal abnormalities were detected and characterized by array-CGH and normal samples showed normal profiles. This new DNA extraction protocol associated with array-CGH analysis could be used in prenatal testing even when gestational age is less than 16 weeks, especially in cases with abnormal ultrasound findings.
Published: 2013
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27. Next-generation sequencing in a series of 80 fetuses with complex cardiac malformations and/or heterotaxy

Author: Julien Thevenon, Sophie Blesson, Sylvie Manouvrier Hanu, Chloé Quélin, Florence Fellmann, Nicolas Chassaing, Fabienne Giuliano, Laetitia Lambert, Caroline Rooryck-Thambo, Pierre-Simon Jouk, Sylvie Di Filippo, Alexandre Vasiljevic, Christine Francannet, Daphné Lehalle, Audrey Putoux, Anna‐Gaëlle Giguet‐Valard, Sophie Naudion, Salima El Chehadeh, Estelle Colin, Viorica Ciorna‐Monferrato, Bruno Reversade, Lionel Van Maldergem, Fanny Morice-Picard, Renaud Touraine, Sébastien Moutton, Jocelyne Attia, Laurent Pasquier, A. Vigouroux-Castera, Catherine Yardin, Tania Attié-Bitach, Carine Abel, Hui Liu, Sylvie Odent, Christelle Cabrol, Florence Petit, Philippe Khau Van Kien, Thomas Simonet, Catherine Vincent-Delorme, Jean Chiesa, Juliette Piard, Anne Bazin, Mélanie Fradin, Bertrand Isidor, Loubna El Zein, Patrice Bouvagnet, Marie-Pierre Brechard, Emmanuelle Szenker-Ravi, Sophie Scheidecker, Claire Beneteau, and ACS - Heart failure & arrhythmias
Subjects: Heart Defects, Congenital, Male, midline anomaly, Heterozygote, medicine.medical_specialty, Genetic counseling, Consanguinity, Heterotaxy Syndrome, Biology, DNA sequencing, 03 medical and health sciences, consanguinity, Genetics, medicine, Humans, Family, Family history, Genetics (clinical), 030304 developmental biology, 0303 health sciences, Fetus, Obstetrics, Homozygote, 030305 genetics & heredity, High-Throughput Nucleotide Sequencing, heterotaxy, congenital heart defects, Cardiac malformations, Pedigree, fetus, Parental consanguinity, Cytogenetic Analysis, Mutation, Female, next-generation sequencing, Heterotaxy
Abstract: Herein, we report the screening of a large panel of genes in a series of 80 fetuses with congenital heart defects (CHDs) and/or heterotaxy and no cytogenetic anomalies. There were 49 males (61%/39%), with a family history in 28 cases (35%) and no parental consanguinity in 77 cases (96%). All fetuses had complex CHD except one who had heterotaxy and midline anomalies while 52 cases (65%) had heterotaxy in addition to CHD. Altogether, 29 cases (36%) had extracardiac and extra-heterotaxy anomalies. A pathogenic variant was found in 10/80 (12.5%) cases with a higher percentage in the heterotaxy group (8/52 cases, 15%) compared with the non-heterotaxy group (2/28 cases, 7%), and in 3 cases with extracardiac and extra-heterotaxy anomalies (3/29, 10%). The inheritance was recessive in six genes (DNAI1, GDF1, MMP21, MYH6, NEK8, and ZIC3) and dominant in two genes (SHH and TAB2). A homozygous pathogenic variant was found in three cases including only one case with known consanguinity. In conclusion, after removing fetuses with cytogenetic anomalies, next-generation sequencing discovered a causal variant in 12.5% of fetal cases with CHD and/or heterotaxy. Genetic counseling for future pregnancies was greatly improved. Surprisingly, unexpected consanguinity accounts for 20% of cases with identified pathogenic variants.
Published: 2020

28. Developmental and epilepsy spectrum of KCNB1 encephalopathy with long‐term outcome

Author: Rima Nabbout, Patrick Berquin, Sylvie Odent, Mathieu Kuchenbuch, Gwenaël Le Guyader, Marieke F. van Dooren, Jamel Chelly, Edor Kabashi, Melanie Jennesson, Giulia Barcia, Cyril Mignot, Tayeb Sekhara, Alexandra Afenjar, Marlène Rio, Anne Rolland, Claude Besmond, Andrés Rodríguez-Sacristán Cascajo, Gaetano Terrone, Isabelle Marey, Boris Keren, Alice Goldenberg, A.S. Lebre, Heather C Mefford, Gaetan Lesca, Anne de Saint Martin, Susanna Negrin, Nathalie Dorison, Hélène Maurey, Agnès Guët, David Geneviève, Marie Claire Y. de Wit, Jeremy L. Freeman, Pierre Meyer, Thierry Billette de Villemeur, Ingrid E. Scheffer, Katherine B. Howell, Anca Nica, Raphael Levy, Martino Montomoli, Renzo Guerrini, Elena Parrini, Candace T. Myers, Bertrand Isidor, Alice Poisson, Marion Gérard, Salima El Chehadeh, Lynette G. Sadleir, Julien Durigneux, Pascal Vrielynck, Amy L Schneider, Emmanuel Scalais, Laurence Hubert, Sophie Dupont, Vesna Brankovic, Damien Lederer, Hervé Isnard, Delphine Breuillard, Claire Bar, Alberto Danieli, Diane Doummar, Arnold Munnich, CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Unité neurovasculaire et troubles cognitifs (Neuvacod), Université de Poitiers, Institut NeuroMyoGène (INMG), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre hospitalier universitaire de Nantes (CHU Nantes), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Strasbourg, Centre for the Diagnosis and management of genetic psychiatric disorders [Bron] (GénoPsy), Centre Hospitalier le Vinatier [Bron], Laboratoire Traitement du Signal et de l'Image (LTSI), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pontchaillou [Rennes], Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Rouen, Normandie Université (NU), CHU Amiens-Picardie, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), CHU Pitié-Salpêtrière [AP-HP], FP7 Ideas: European Research Council, National Health and Medical Research Council, Health Research Council of New Zealand, ANR‐10-IAHU‐01, Agence Nationale de la Recherche, Fondation Bettencourt Schueller, 602531, Seventh Framework Programme, ANR-10-IAHU-0001,Imagine,Institut Hospitalo-Universitaire Imagine(2010), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), ANR‐10IAHU‐01, Agence Nationale de la Recherche, Clinical Genetics, Neurology, and Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1)
Subjects: 0301 basic medicine, Adult, Male, Pediatrics, medicine.medical_specialty, Time Factors, Adolescent, autism spectrum disorders, [SDV]Life Sciences [q-bio], Encephalopathy, Severe epilepsy, Imaging data, Cohort Studies, 03 medical and health sciences, Epilepsy, Young Adult, 0302 clinical medicine, Shab Potassium Channels, drug-resistant epilepsy, Intellectual disability, medicine, Missense mutation, Humans, In patient, developmental and epileptic encephalopathy, Child, ComputingMilieux_MISCELLANEOUS, Retrospective Studies, Brain Diseases, sudden unexpected death in epilepsy, developmental encephalopathy, business.industry, Genetic Variation, Infant, Cognition, Electroencephalography, medicine.disease, potassium channels, 3. Good health, 030104 developmental biology, Treatment Outcome, Neurology, Child, Preschool, Female, Neurology (clinical), business, 030217 neurology & neurosurgery
Abstract: Objective: We aimed to delineate the phenotypic spectrum and long-term outcome of individuals with KCNB1 encephalopathy. Methods: We collected genetic, clinical, electroencephalographic, and imaging data of individuals with KCNB1 pathogenic variants recruited through an international collaboration, with the support of the family association “KCNB1 France.” Patients were classified as having developmental and epileptic encephalopathy (DEE) or developmental encephalopathy (DE). In addition, we reviewed published cases and provided the longterm outcome in patients older than 12 years from our series and from literature. Results: Our series included 36 patients (21 males, median age = 10 years, range = 1.6 months-34 years). Twenty patients (56%) had DEE with infantile onset seizures (seizure onset = 10 months, range = 10 days-3.5 years), whereas 16 (33%) had DE with late onset epilepsy in 10 (seizure onset = 5 years, range = 18 months-25 years) and without epilepsy in six. Cognitive impairment was more severe in individuals with DEE compared to those with DE. Analysis of 73 individuals with KCNB1 pathogenic variants (36 from our series and 37 published individuals in nine reports) showed developmental delay in all with severe to profound intellectual disability in 67% (n = 41/61) and autistic features in 56% (n = 32/57). Long-term outcome in 22 individuals older than 12 years (14 in our series and eight published individuals) showed poor cognitive, psychiatric, and behavioral outcome. Epilepsy course was variable. Missense variants were associated with more frequent and more severe epilepsy compared to truncating variants. Significance: Our study describes the phenotypic spectrum of KCNB1 encephalopathy, which varies from severe DEE to DE with or without epilepsy. Although cognitive impairment is worse in patients with DEE, long-term outcome is poor for most and missense variants are associated with more severe epilepsy outcome. Further understanding of disease mechanisms should facilitate the development of targeted therapies, much needed to improve the neurodevelopmental prognosis.
Published: 2020
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29. Genotype-first in a cohort of 95 fetuses with multiple congenital abnormalities: when exome sequencing reveals unexpected fetal phenotype-genotype correlations

Author: Tania Attié-Bitach, Philippe Jonveaux, Alice Goldenberg, Antonio Vitobello, Nicole Laurent, Marjolaine Willems, Valérie Kremer, Dominique Gaillard, Chloé Quélin, Sebastien Moutton, Marion Aubert-Lenoir, Yannis Duffourd, Anne-Sophie Lebre, Anne-Claire Brehin, James Lespinasse, Yline Capri, Nolwenn Jean-Marçais, Maria Cristina Antal, Frédéric Tran Mau-Them, Nathalie Marle, Daphné Lehalle, Nicolas Bourgon, Sophie Blesson, Bernard Foliguet, Laetita Lambert, Nicole Bigi, Mélanie Fradin, Emilie Tisserant, Christel Thauvin-Robinet, Ange-Line Bruel, Elisabeth Alanio, Marie-Hélène Saint-Frison, Christine Francannet, Anne-Marie Guerrot, Paul Kuentz, Elise Schaefer, Anne-Marie Beaufrere, Sylvie Odent, Francine Arbez-Gindre, Laurence Faivre, Christophe Philippe, Julien Thevenon, Sophie Patrier-Sallebert, Nada Houcinat, Celine Poirisier, Sophie Nambot, Mathilde Lefebvre, Mirna Assoum, Françoise Girard-Lemaitre, Sophie Collardeau-Frachon, Marie-José Perez, Jean-Louis Mandel, Jean-Pierre Mazutti, Renaud Touraine, Philippe Loget, Salima El Chehadeh, Centre d’Investigation Clinique de Nantes (CIC Nantes), Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre hospitalier universitaire de Nantes (CHU Nantes), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Hospices Civils de Lyon (HCL), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Equipe GAD (LNC - U1231), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Diagnostic Génétique [CHU Strasbourg], Université de Strasbourg (UNISTRA)-CHU Strasbourg, CHU Strasbourg, Hôpital de Hautepierre [Strasbourg], Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), European Organization for Nuclear Research (CERN), Service de Génétique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Centre Hospitalier Universitaire de Reims (CHU Reims), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Service d'Anatomie pathologique [CHRU Besançon], Institut de Génétique et Développement de Rennes (IGDR), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Centre de référence Maladies Rares CLAD-Ouest [Rennes], CHU Pontchaillou [Rennes], Hôpital Lapeyronie [Montpellier] (CHU), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Institut de Biomécanique Humaine Georges Charpak (IBHGC), Université Sorbonne Paris Nord-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Service de Génétique Médicale [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, CHU Clermont-Ferrand, CHU Rouen, Normandie Université (NU), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Métropole Savoie [Chambéry], CHU Saint-Etienne, Département de génétique [Robert Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Hôpital Robert Debré, Plateau technique de Biologie [CHU de Dijon], Centre Hospitalier Universitaire [Grenoble] (CHU), CarMeN, laboratoire, Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), 14-013 FOETEX, Interregional French PHRC, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E)
Subjects: Candidate gene, medicine.medical_specialty, Genotype, [SDV]Life Sciences [q-bio], Biology, Congenital Abnormalities, Cohort Studies, complex traits, 03 medical and health sciences, Fetus, Molecular genetics, medicine, Humans, Abnormalities, Multiple, Exome, Clinical significance, genetics, Gene, Genetic Association Studies, Genetics (clinical), Exome sequencing, 030304 developmental biology, Genetics, 0303 health sciences, 030305 genetics & heredity, Sequence Analysis, DNA, Phenotype, [SDV] Life Sciences [q-bio], molecular genetics, reproductive medicine
Abstract: PurposeMolecular diagnosis based on singleton exome sequencing (sES) is particularly challenging in fetuses with multiple congenital abnormalities (MCA). Indeed, some studies reveal a diagnostic yield of about 20%, far lower than in live birth individuals showing developmental abnormalities (30%), suggesting that standard analyses, based on the correlation between clinical hallmarks described in postnatal syndromic presentations and genotype, may underestimate the impact of the genetic variants identified in fetal analyses.MethodsWe performed sES in 95 fetuses with MCA. Blind to phenotype, we applied a genotype-first approach consisting of combined analyses based on variants annotation and bioinformatics predictions followed by reverse phenotyping. Initially applied to OMIM-morbid genes, analyses were then extended to all genes. We complemented our approach by using reverse phenotyping, variant segregation analysis, bibliographic search and data sharing in order to establish the clinical significance of the prioritised variants.ResultssES rapidly identified causal variant in 24/95 fetuses (25%), variants of unknown significance in OMIM genes in 8/95 fetuses (8%) and six novel candidate genes in 6/95 fetuses (6%).ConclusionsThis method, based on a genotype-first approach followed by reverse phenotyping, shed light on unexpected fetal phenotype-genotype correlations, emphasising the relevance of prenatal studies to reveal extreme clinical presentations associated with well-known Mendelian disorders.
Published: 2020
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30. Primrose syndrome: a phenotypic comparison of patients with a ZBTB20 missense variant versus a 3q13.31 microdeletion including ZBTB20

Author: Anne-Sophie Denommé-Pichon, Laetitia Gouas, Martin Chevarin, Marlène Rio, Elodie Gautier, Sonia Bouquillon, Nolwenn Jean-Marçais, Jennifer Fabre-Teste, Dominique Martin, Elise Schaefer, Fabienne Giuliano, Didier Lacombe, Sophie Nambot, Gaëlle Vieville, Sophie Blesson, Paul Kuentz, Christine Francannet, Yannis Duffourd, Aurélien Juven, Alice Masurel, Patrick Callier, Arnold Munnich, Salima El Chehadeh, Sophie Rondeau, Christophe Philippe, Amélie Piton, Fanny Laffargue, Catherine Vincent Delorme, Marie Vincent, Olivier Pichon, Bénédicte Gérard, Anne-Laure Mosca-Boidron, Bertrand Isidor, Christel Thauvin-Robinet, Laurence Perrin-Sabourin, Nathalie Marle, Cédric Le Caignec, Laurence Faivre, Hubert Journel, Klaus Dieterich, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service de génétique, CHU Dijon, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Laboratoire de cytogénétique (CHU de Dijon), Génétique des Anomalies du Développement (GAD), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Equipe GAD (LNC - U1231), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut cellule souche et cerveau (U846 Inserm - UCBL1), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Recherche Agronomique (INRA), Imagine - Institut des maladies génétiques (IMAGINE - U1163), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance Publique-Hôpitaux de Paris, Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Service de génétique médicale, CHU Strasbourg-Hôpital de Hautepierre [Strasbourg], Service de Génétique Médicale, Hôpital Civil, Strasbourg, DGA Maîtrise de l'information (DGA.MI), Direction générale de l'Armement (DGA), Institut de Génétique Médicale [CHRU Lille], Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Service de Génétique Médicale [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, CHU Clermont-Ferrand, Imagerie Moléculaire et Stratégies Théranostiques (IMoST), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Hôpital l'Archet, Service de Génétique Médicale, Génétique médicale [Centre Hospitalier de Vannes], Centre hospitalier Bretagne Atlantique (Morbihan) (CHBA), Département de génétique [Robert Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Laboratoire de biochimie et génétique moléculaire, CHU Grenoble, Grenoble Institut des Neurosciences (GIN), Université Joseph Fourier - Grenoble 1 (UJF)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Bordeaux (UB)-CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Département de Biochimie et Génétique [Angers], Université d'Angers (UA)-Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), FHU TRANSLAD (CHU de Dijon), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Institut cellule souche et cerveau (SBRI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Groupe d'imagerie neurofonctionnelle (GIN), Institut des Maladies Neurodégénératives [Bordeaux] (IMN), and Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Subjects: Adolescent, Hearing loss, [SDV]Life Sciences [q-bio], Mutation, Missense, Nerve Tissue Proteins, [SDV.CAN]Life Sciences [q-bio]/Cancer, Bioinformatics, Article, Corpus Callosum, 03 medical and health sciences, Ectopic calcification, Ptosis, Intellectual Disability, Genetics, Medicine, Missense mutation, Humans, Abnormalities, Multiple, Child, Ear Diseases, Wasting, Genetics (clinical), Muscle contracture, 0303 health sciences, business.industry, 030305 genetics & heredity, Macrocephaly, Calcinosis, medicine.disease, Primrose syndrome, Muscular Atrophy, Phenotype, Child, Preschool, Chromosomes, Human, Pair 3, medicine.symptom, Chromosome Deletion, business, Transcription Factors
Abstract: International audience; Primrose syndrome is characterized by variable intellectual deficiency, behavior disorders, facial features with macrocephaly, and a progressive phenotype with hearing loss and ectopic calcifications, distal muscle wasting, and contractures. In 2014, ZBTB20 variants were identified as responsible for this syndrome. Indeed, ZBTB20 plays an important role in cognition, memory, learning processes, and has a transcription repressive effect on numerous genes. A more severe phenotype was discussed in patients with missense single nucleotide variants than in those with large deletions. Here, we report on the clinical and molecular results of 14 patients: 6 carrying ZBTB20 missense SNVs, 1 carrying an early truncating indel, and 7 carrying 3q13.31 deletions, recruited through the AnDDI-Rares network. We compared their phenotypes and reviewed the data of the literature, in order to establish more powerful phenotype-genotype correlations. All 57 patients presented mild-to-severe ID and/or a psychomotor delay. Facial features were similar with macrocephaly, prominent forehead, downslanting palpebral fissures, ptosis, and large ears. Hearing loss was far more frequent in patients with missense SNVs (p = 0.002), ectopic calcification, progressive muscular wasting, and contractures were observed only in patients with missense SNVs (p nonsignificant). Corpus callosum dysgenesis (p = 0.00004), hypothyroidism (p = 0.047), and diabetes were also more frequent in this group. However, the median age was 9.4 years in patients with deletions and truncating variant compared with 15.1 years in those with missense SNVs. Longer follow-up will be necessary to determine whether the phenotype of patients with deletions is also progressive.
Published: 2020
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31. Expanding the genetic and phenotypic relevance of KCNB1 variants in developmental and epileptic encephalopathies: 27 new patients and overview of the literature

Author: Delphine Breuillard, Isabelle Marey, Claire Bar, Tayeb Sekhara, Candace T. Myers, Diane Doummar, Alice Poisson, Hervé Isnard, Nathalie Dorison, Gwenaël Le Guyader, Arnold Munnich, Alexandra Afenjar, Anne de Saint Martin, Jamel Chelly, Gaetan Lesca, Gaetano Terrone, Rima Nabbout, Jeremy L. Freeman, David Geneviève, Sophie Dupont, Cyril Mignot, Katherine B. Howell, Giulia Barcia, Melanie Jennesson, Patrick Berquin, Sylvie Odent, Boris Keren, Ingrid E. Scheffer, Renzo Guerrini, Emmanuel Scalais, Thierry Billette de Villemeur, Martino Montomoli, Agnès Guët, Pierre Meyer, Anca Nica, Anne-Sophie Lebre, Edor Kabashi, Carla Marini, Amy L Schneider, Marion Gérard, Salima El Chehadeh, Heather C Mefford, Lynette G. Sadleir, Imagine - Institut des maladies génétiques (IMAGINE - U1163), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), American Memorial Hospital, Centre hospitalier universitaire de Poitiers (CHU Poitiers), University of Melbourne, CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hospices Civils de Lyon (HCL), A Meyer Children's Hospital, Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Institut des sciences cognitives Marc Jeannerod - Centre de neuroscience cognitive - UMR5229 (CNC), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Equipe NEMESIS - Centre de Recherches de l'Institut du Cerveau et de la Moelle épinière (NEMESIS-CRICM), Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC), CHU Amiens-Picardie, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Hôpital de Hautepierre [Strasbourg], Hôpitaux Universitaires de Strasbourg, Hôpital Louis-Mourier, Colombes, France., Centre Hospitalier de Luxembourg [Luxembourg] (CHL), Rothschild Foundation Hospital, Paris., University of Washington [Seattle], Royal Children's Hospital, University of Melbourne, Melbourne, Victoria, Australia., A.Meyer Children's Hospital, CHU Pontchaillou [Rennes], Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Section of Pediatrics-Child Neurology Unit, Federico II University, 80131, Naples, Italy, Centre Hospitalier Interrégional Edith Cavell (CHIREC), Service de génétique [Reims], Centre Hospitalier Universitaire de Reims (CHU Reims), Institut de Génétique et Développement de Rennes (IGDR), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), CLAD-Ouest, CHU Rennes, France., University of Otago [Dunedin, Nouvelle-Zélande], Pediatric Neurology & Neurogenetics Unit and Laboratories, Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI)-Children's Hospital A. Meyer, Epilepsy Research Centre, The Florey Institute of Neurosciences and Mental Health, Heidelberg, Victoria, Australia., Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [AP-HP], Centre de référence des épilepsies rares [CHU Pitié-Salpêtrière], Unité fonctionnelle d'épilepsie [CHU Pitié-Salpêtrière], Service de Neurologie [CHU Pitié-Salpêtrière], IFR70-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-IFR70-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Service de Neurologie [CHU Pitié-Salpêtrière], H2020 European Research Council, Health Research Council of New Zealand, Agence Nationale de la Recherche, Seventh Framework Programme, Fondation Bettencourt Schueller, European Research Council, Bar, C, Barcia, G, Jennesson, M, Le Guyader, G, Schneider, A, Mignot, C, Lesca, G, Breuillard, D, Montomoli, M, Keren, B, Doummar, D, de Villemeur, Tb, Afenjar, A, Marey, I, Gerard, M, Isnard, H, Poisson, A, Dupont, S, Berquin, P, Meyer, P, Genevieve, D, De Saint Martin, A, El Chehadeh, S, Chelly, J, Guët, A, Scalais, E, Dorison, N, Myers, Ct, Mefford, Hc, Howell, Kb, Marini, C, Freeman, Jl, Nica, A, Terrone, G, Sekhara, T, Lebre, A, Odent, S, Sadleir, Lg, Munnich, A, Guerrini, R, Scheffer, Ie, Kabashi, E, Nabbout, R, Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pitié-Salpêtrière [APHP], Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Hôpital Armand Trousseau, Hôpital Armand Trousseau, Paris, France., Centre de Référence déficiences intellectuelles de causes rares, GH Pitie-Salpêtrière-Charles Foix, F-, 75013, Paris, France., Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Département de génétique médicale, maladies rares et médecine personnalisée [CHRU de Montpellier], Centre Hospitalier de Luxembourg, C.H.I.R.E.C, Brussels, Belgium., Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Children's Hospital A. Meyer-University of Florence (UNIFI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [APHP], Institut des sciences cognitives Marc Jeannerod - Centre de neuroscience cognitive - UMR5229 (ISC-MJ), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Fondation Ophtalmologique Adolphe de Rothschild [Paris], Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), University of Naples Federico II = Università degli studi di Napoli Federico II, Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Università degli Studi di Firenze = University of Florence (UniFI)-Children's Hospital A. Meyer, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Children's Hospital A. Meyer-Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-IFR70-CHU Pitié-Salpêtrière [AP-HP], and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Service de Neurologie [CHU Pitié-Salpêtrière]
Subjects: Genotype, [SDV]Life Sciences [q-bio], Biology, Structure-Activity Relationship, 03 medical and health sciences, Epilepsy, Shab Potassium Channels, KCNB1, Intellectual disability, Genetic variation, Genetics, medicine, Humans, Missense mutation, Genetic Predisposition to Disease, Allele, developmental and epileptic encephalopathy, Alleles, Genetic Association Studies, Genetics (clinical), ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, 0303 health sciences, 030305 genetics & heredity, Genetic Variation, medicine.disease, Axon initial segment, Phenotype, Neurodevelopmental Disorders, epilepsy, potassium channel
Abstract: International audience; Developmental and epileptic encephalopathies (DEE) refer to a heterogeneous group of devastating neurodevelopmental disorders. Variants in KCNB1 have been recently reported in patients with early-onset DEE. KCNB1 encodes the alpha subunit of the delayed-rectifier voltage-dependent potassium channel Kv 2.1. We review the 37 previously reported patients carrying 29 distinct KCNB1 variants and significantly expand the mutational spectrum describing 18 novel variants from 27 unreported patients. Most variants occur de novo and mainly consist of missense variants located on the voltage sensor and the pore domain of Kv 2.1. We also report the first inherited variant (p.Arg583*). KCNB1-related encephalopathies encompass a wide spectrum of neurodevelopmental disorders with predominant language difficulties and behavioral impairment. Eighty-five percent of patients developed epilepsies with variable syndromes and prognosis. Truncating variants in the C-terminal domain are associated with a less severe epileptic phenotype. Overall, this report provides an up-to-date review of the mutational and clinical spectrum of KCNB1, strengthening its place as a causal gene in DEEs and emphasizing the need for further functional studies to unravel the underlying mechanisms.
Published: 2020
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32. A severe case of Frank-ter Haar syndrome and literature review: Further delineation of the phenotypical spectrum

Author: Anne-Sophie Guilbert, Charlie De Melo, Elise Schaefer, Benjamin Durand, Hélène Dollfus, Corinne Stoetzel, Nadège Calmels, Leonardo Donato, Dana Timbolschi, Nadine Kempf, Sophie Scheidecker, Dominique Astruc, Arnaud Sauer, Maria Cristina Antal, Salima El Chehadeh, Laboratoire de Génétique Médicale (LGM), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Génétique Médicale, Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Dynamique des interactions hôte pathogène (DIHP), Université de Strasbourg (UNISTRA), Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube), École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Les Hôpitaux Universitaires de Strasbourg (HUS)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0301 basic medicine, Heart Defects, Congenital, Pathology, medicine.medical_specialty, Developmental Disabilities, Glaucoma, 030105 genetics & heredity, Osteochondrodysplasias, Craniofacial Abnormalities, 03 medical and health sciences, Camptodactyly, Megalocornea, Frank–ter Haar syndrome, Genetics, Medicine, Humans, Abnormalities, Multiple, Craniofacial, Genetics (clinical), Adaptor Proteins, Signal Transducing, [SDV.GEN]Life Sciences [q-bio]/Genetics, business.industry, Infant, Newborn, Infant, General Medicine, medicine.disease, Hypotonia, Buphthalmos, 030104 developmental biology, Phenotype, Invadopodia, Female, medicine.symptom, business
Abstract: Frank-ter Haar syndrome (FTHS) is a rare autosomal recessive syndrome resulting from mutations in the SH3PXD2B gene involved in the formation of podosomes and invadopodia which have a role in extracellular matrix remodelling and cell migration. FTHS is characterized by facial dysmorphism, megalocornea, inconstant glaucoma, variable developmental delay, skeletal and cardiac anomalies. To date, 40 patients have been reported in the literature with a clinical diagnosis of FTHS, only 20 patients having identified mutations. We present a review of these 20 reported patients and describe a patient born to non-consanguineous parents, with intrauterine growth retardation, hypotonia, congenital glaucoma, caudal appendix, scoliosis, camptodactyly, ventricular septal defect, thin corpus callosum and craniofacial features suggestive of FTHS. Clinical evolution resulted in buphthalmos worsening, coarsening of the facial features and respiratory failure leading to death at 4,5 months. Diagnosis was confirmed by the identification of a previously known homozygous mutation c.969delG, p.(Arg324Glyfs*19) in SH3PXD2B. This is the first description of very severe phenotype with lethal respiratory impairment in FTHS. Since very few patients are described in the literature, and 2 out of the 3 patients carrying the c.969delG mutation had a favourable clinical course, more cases are needed to better characterize the phenotype and understand the natural history of this syndrome. Furthermore, we hypothesize that the alteration of podosomes function could lead to a reduction of the extracellular matrix degradation and accumulation of the latter in the extracellular space, which might explain the coarsening of the facial features and the severe refractory glaucoma.
Published: 2020
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33. Excess of de novo variants in genes involved in chromatin remodelling in patients with marfanoid habitus and intellectual disability

Author: Florence Demurger, Christine Binquet, Muriel Holder, Frédéric Tran Mau-Them, Salima El Chehadeh, Martine Doco-Fenzy, Geneviève Baujat, Delphine Héron, Judith St-Onge, Christophe Philippe, Elodie Gautier, Robert Olaso, Rebecca A. Barnard, Paul Kuentz, François Lecoquierre, Stanislas Lyonnet, Gwenaëlle Collod-Béroud, Dominique Martin-Coignard, Isabelle Missotte, Anne Boland, Cyril Goizet, Laurence Perrin, Valérie Cormier-Daire, Sébastien Moutton, Nadine Hanna, Jean-François Deleuze, Audrey Putoux, Guillaume Jondeau, Sylvie Odent, Doris Lechner, Arnold Munnich, Thibaud Jouan, Aurélia Jacquette, Pierre-Simon Jouk, Martin Chevarin, Virginie Carmignac, Elisabetta Lapi, Alice Goldenberg, Christel Thauvin-Robinet, Sujatha Jagadeesh, P. Callier, Fatma Daoud, Yannis Duffourd, Frédéric Huet, Nathalie Marle, Charlotte Poe, Gipsy Lopez, Cyril Mignot, Florence Petit, Khadija Amarof, Brian J. O'Roak, Caroline Cabret, Fanny Morice-Picard, Jean Baptiste Rivière, Mirna Assoum, Marie Ange Delrue, Julien Thevenon, Laurence Faivre, David Geneviève, Elisabeth Sarrazin, Ange Line Bruel, Pauline Arnaud, Catherine Boileau, Christine Coubes, Didier Lacombe, Laurence Duplomb, Alice Masurel, Patrick Collignon, Antonio Vitobello, Julien Van-Gils, Bruno Leheup, Nolwenn Jean-Marçais, Equipe GAD (LNC - U1231), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, FHU TRANSLAD (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Bordeaux [Bordeaux], CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Centre Hospitalier Universitaire [Rennes], Centre Hospitalier Universitaire [Grenoble] (CHU), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre Hospitalier Le Mans (CH Le Mans), CHU Pitié-Salpêtrière [AP-HP], Hôpital Robert Debré Paris, Hôpital Robert Debré, Hospices Civils de Lyon (HCL), CHU de la Martinique [Fort de France], Hôpital Pierre Zobda-Quitman [CHU de la Martinique], Centre hospitalier territorial Gaston-Bourret [Nouméa], CHU Rouen, Normandie Université (NU), Centre Hospitalier Universitaire de Reims (CHU Reims), Hémostase et Remodelage Vasculaire Post-Ischémie (HERVI - EA 3801), Université de Reims Champagne-Ardenne (URCA), Marseille medical genetics - Centre de génétique médicale de Marseille (MMG), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), AP-HP - Hôpital Bichat - Claude Bernard [Paris], Centre National de Recherche en Génomique Humaine (CNRGH), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Biologie François JACOB (JACOB), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Paris-Saclay, and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)
Subjects: Proband, Male, [SDV]Life Sciences [q-bio], intellectual deficiency, MESH: NFI Transcription Factors, chromatin remodeling, Marfan Syndrome, Craniofacial Abnormalities, MESH: Child, Intellectual disability, MESH: Craniofacial Abnormalities, MESH: Mental Retardation, X-Linked, Exome, Child, de novo variants, Genetics (clinical), Exome sequencing, Genetics, MESH: Exome, MESH: Middle Aged, biology, MESH: Genetic Predisposition to Disease, Middle Aged, NFIX, MESH: Young Adult, Female, Adult, MESH: Mutation, Adolescent, Chromatin remodeling, MESH: Intellectual Disability, MESH: Marfan Syndrome, EHMT1, Young Adult, MESH: Whole Exome Sequencing, Intellectual Disability, Exome Sequencing, medicine, Humans, Genetic Predisposition to Disease, marfanoid habitus, Gene, MESH: Neurodevelopmental Disorders, MESH: Adolescent, MESH: Humans, Genetic heterogeneity, MESH: Chromatin Assembly and Disassembly, MESH: Histone-Lysine N-Methyltransferase, MESH: Adult, Histone-Lysine N-Methyltransferase, medicine.disease, Chromatin Assembly and Disassembly, MESH: Male, NFI Transcription Factors, Neurodevelopmental Disorders, Mutation, biology.protein, Mental Retardation, X-Linked, MESH: Female
Abstract: PurposeMarfanoid habitus (MH) combined with intellectual disability (ID) (MHID) is a clinically and genetically heterogeneous presentation. The combination of array CGH and targeted sequencing of genes responsible for Marfan or Lujan–Fryns syndrome explain no more than 20% of subjects.MethodsTo further decipher the genetic basis of MHID, we performed exome sequencing on a combination of trio-based (33 subjects) or single probands (31 subjects), of which 61 were sporadic.ResultsWe identified eight genes with de novo variants (DNVs) in at least two unrelated individuals (ARID1B, ATP1A1, DLG4, EHMT1, NFIX, NSD1, NUP205 and ZEB2). Using simulation models, we showed that five genes (DLG4, NFIX, EHMT1, ZEB2 and ATP1A1) met conservative Bonferroni genomewide significance for an excess of the observed de novo point variants. Overall, at least one pathogenic or likely pathogenic variant was identified in 54.7% of subjects (35/64). These variants fell within 27 genes previously associated with Mendelian disorders, including NSD1 and NFIX, which are known to be mutated in overgrowth syndromes.ConclusionWe demonstrated that DNVs were enriched in chromatin remodelling (p=2×10−4) and genes regulated by the fragile X mental retardation protein (p=3×10−8), highlighting overlapping genetic mechanisms between MHID and related neurodevelopmental disorders.
Published: 2019
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34. Genetic abnormalities in a large cohort of Coffin-Siris syndrome patients

Author: Greta Gillies, Kayoko Saito, Lesley M McGregor, Takeshi Mizuguchi, Mathieu Marie-Laure, Takanori Yamagata, Takeo Kato, George McGillivray, Kate Gibson, Ok Hwa Kim, Satoko Miyatake, Gaku Minase, Satomi Mitsuhashi, Mari Matsuo, Yoshiya Hisaeda, Seiji Mizuno, Helen Cox, Annick Toutain, Hitoshi Osaka, David Mowat, Lakshmi Mehta, Patrick Yap, Kougoro Iwanaga, Kimihiko Oishi, Takashi Sato, Rani Sachdev, Kate Pope, Jan Liebelt, Salima El Chehadeh, Atsushi Fujita, Shubha R. Phadke, Ken Saida, Futoshi Sekiguchi, Yoshiteru Azuma, Seema Kapoor, Eriko Koshimizu, Nobuhiko Okamoto, Jeff M. Milunsky, Keisuke Nagasaki, Lorne A. Clarke, Winnie Peitee Ong, Naomi Tsuchida, Richard J. Leventer, Sumito Dateki, Takashi Matsuoka, Bertrand Isidor, Tomoki Kosho, Tiong Yang Tan, Marie Pierre Cordier, Tomonari Awaya, Susan M. White, Junpei Hamada, Yoshikazu Shimoji, Hiroshi Suzumura, Kazuhiro Iwama, Hirofumi Ohashi, Keng Wee Teik, Eri Imagawa, Hiromi Aoi, Yoshinori Tsurusaki, Manisha Goyal, Paul J. Lockhart, Masahiko Kawai, Ghada M H Abdel-Salam, Anju Shukla, David Coman, Kohei Hamanaka, Muzhirah Haniffa, Yasutsugu Chinen, Katta M. Girisha, Atsushi Takata, Naomichi Matsumoto, Massimiliano Rossi, Noriko Miyake, Toshifumi Suzuki, Kenji Shimizu, Chirag Patel, Yuri Uchiyama, and Nerine Gregersen
Subjects: 0301 basic medicine, medicine.medical_specialty, Micrognathism, 030105 genetics & heredity, Genetic analysis, Cohort Studies, 03 medical and health sciences, Intellectual Disability, Genotype, otorhinolaryngologic diseases, Genetics, medicine, Humans, Abnormalities, Multiple, Genetic Predisposition to Disease, Copy-number variation, Coffin–Siris syndrome, Genetics (clinical), Genetic Association Studies, Coarse facial features, business.industry, Genetic Variation, medicine.disease, 030104 developmental biology, Face, Medical genetics, business, Hand Deformities, Congenital, Neck, Congenital disorder
Abstract: Coffin-Siris syndrome (CSS, MIM#135900) is a congenital disorder characterized by coarse facial features, intellectual disability, and hypoplasia of the fifth digit and nails. Pathogenic variants for CSS have been found in genes encoding proteins in the BAF (BRG1-associated factor) chromatin-remodeling complex. To date, more than 150 CSS patients with pathogenic variants in nine BAF-related genes have been reported. We previously reported 71 patients of whom 39 had pathogenic variants. Since then, we have recruited an additional 182 CSS-suspected patients. We performed comprehensive genetic analysis on these 182 patients and on the previously unresolved 32 patients, targeting pathogenic single nucleotide variants, short insertions/deletions and copy number variations (CNVs). We confirmed 78 pathogenic variations in 78 patients. Pathogenic variations in ARID1B, SMARCB1, SMARCA4, ARID1A, SOX11, SMARCE1, and PHF6 were identified in 48, 8, 7, 6, 4, 1, and 1 patients, respectively. In addition, we found three CNVs including SMARCA2. Of particular note, we found a partial deletion of SMARCB1 in one CSS patient and we thoroughly investigated the resulting abnormal transcripts.
Published: 2019

35. The Immune Signaling Adaptor LAT Contributes to the Neuroanatomical Phenotype of 16p11.2 BP2-BP3 CNVs

Author: Maria Nicla Loviglio, Thomas Arbogast, Aia Elise Jønch, Stephan C. Collins, Konstantin Popadin, Camille S. Bonnet, Giuliana Giannuzzi, Anne M. Maillard, Sébastien Jacquemont, Binnaz Yalcin, Nicholas Katsanis, Christelle Golzio, Alexandre Reymond, Christina Fagerberg, Charlotte Brasch Andersen, Martine Doco-Fenzy, Marie-Ange Delrue, Laurence Faivre, Benoit Arveiler, David Geneviève, Anouck Schneider, Marion Gerard, Joris Andrieux, Salima El Chehadeh, Elise Schaefer, Christel Depienne, Mieke Van Haelst, Eva H. Brilstra, Ellen Van Binsbergen, Jeske van Harssel, Lars T. van der Veken, James F. Gusella, Yiping Shen, Elyse Mitchell, Usha Kini, Lara Hawkes, Carolyn Campbell, Florence Niel Butschi, Marie-Claude Addor, Jacques S. Beckmann, Université de Lausanne = University of Lausanne (UNIL), Duke University [Durham], Lausanne University Hospital, Centre for Integrative Biology - CBI (Inserm U964 - CNRS UMR7104 - IGBMC), Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Immanuel Kant Baltic Federal University (IKBFU), Institut de génétique et biologie moléculaire et cellulaire (IGBMC), Université Louis Pasteur - Strasbourg I-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), 16p11.2 Consortium: Maria Nicla Loviglio, Aia Elise Jønch, Konstantin Popadin, Giuliana Giannuzzi, Anne M Maillard, Christina Fagerberg, Charlotte Brasch Andersen, Martine Doco-Fenzy, Marie-Ange Delrue, Laurence Faivre, Benoit Arveiler, David Geneviève, Anouck Schneider, Marion Gerard, Joris Andrieux, Salima El Chehadeh, Elise Schaefer, Christel Depienne, Mieke Van Haelst, Eva H Brilstra, Ellen Van Binsbergen, Jeske van Harssel, Lars T van der Veken, James F Gusella, Yiping Shen, Elyse Mitchell, Usha Kini, Lara Hawkes, Carolyn Campbell, Florence Niel Butschi, Marie-Claude Addor, Jacques S Beckmann, Sébastien Jacquemont, Alexandre Reymond., Dupuis, Christine, Amsterdam Reproduction & Development (AR&D), Human genetics, and Amsterdam Neuroscience - Complex Trait Genetics
Subjects: Male, 0301 basic medicine, epistasis, Microcephaly, obesity, Embryo, Nonmammalian, Phosphoproteins/physiology, MAPK3, [SDV]Life Sciences [q-bio], Chromosome Disorders, Adaptor Proteins, Signal Transducing/genetics, zebrafish, Cohort Studies, Microcephaly/genetics, Mice, 0302 clinical medicine, Chromosome Disorders/genetics, Gene duplication, Genetics(clinical), Child, Zebrafish, Genetics (clinical), Aged, 80 and over, Mice, Knockout, Genetics, ZAP70, Brain, Gene Expression Regulation, Developmental, head size, Middle Aged, 16p11.2, Phenotype, Chromatin, [SDV] Life Sciences [q-bio], Child, Preschool, Knockout mouse, Female, Chromosomes, Human, Pair 16/genetics, Chromosome Deletion, Autistic Disorder/genetics, Signal Transduction, Adult, DNA Copy Number Variations, Adolescent, autism, Biology, Article, Young Adult, 03 medical and health sciences, Intellectual Disability, Zebrafish Proteins/genetics, medicine, Humans, Animals, Brain/metabolism, Autistic Disorder, Membrane Proteins/genetics, Adaptor Proteins, Signal Transducing, Aged, genome architecture, Membrane Proteins, Infant, Zebrafish Proteins, Phosphoproteins, medicine.disease, biology.organism_classification, Intellectual Disability/genetics, Mice, Inbred C57BL, 030104 developmental biology, Zebrafish/embryology, Chromosomes, Human, Pair 16, 030217 neurology & neurosurgery, Embryo, Nonmammalian/metabolism
Abstract: International audience; Copy-number changes in 16p11.2 contribute significantly to neuropsychiatric traits. Besides the 600 kb BP4-BP5 CNV found in 0.5%-1% of individuals with autism spectrum disorders and schizophrenia and whose rearrangement causes reciprocal defects in head size and body weight, a second distal 220 kb BP2-BP3 CNV is likewise a potent driver of neuropsychiatric, anatomical, and metabolic pathologies. These two CNVs are engaged in complex reciprocal chromatin looping, intimating a functional relationship between genes in these regions that might be relevant to pathomechanism. We assessed the drivers of the distal 16p11.2 duplication by overexpressing each of the nine encompassed genes in zebrafish. Only overexpression of LAT induced a reduction of brain proliferating cells and concomitant microcephaly. Consistently, suppression of the zebrafish ortholog induced an increase of proliferation and macrocephaly. These phenotypes were not unique to zebrafish; Lat knockout mice show brain volumetric changes. Consistent with the hypothesis that LAT dosage is relevant to the CNV pathology, we observed similar effects upon overexpression of CD247 and ZAP70, encoding members of the LAT signalosome. We also evaluated whether LAT was interacting with KCTD13, MVP, and MAPK3, major driver and modifiers of the proximal 16p11.2 600 kb BP4-BP5 syndromes, respectively. Co-injected embryos exhibited an increased microcephaly, suggesting the presence of genetic interaction. Correspondingly, carriers of 1.7 Mb BP1-BP5 rearrangements that encompass both the BP2-BP3 and BP4-BP5 loci showed more severe phenotypes. Taken together, our results suggest that LAT, besides its well-recognized function in T cell development, is a major contributor of the 16p11.2 220 kb BP2-BP3 CNV-associated neurodevelopmental phenotypes.
Published: 2017
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36. Mutations in theERCC2(XPD) gene associated with severe fetal ichthyosis and dysmorphic features

Author: Aurélie Bourchany, Dan Lipsker, Sylvie Fraitag, Maria Cristina Antal, Rosalie Abida, Hélène Dollfus, Jamel Chelly, Mathilde Lefebvre, Nadège Calmels, Fanny Morice-Picard, Salima El Chehadeh, Christel Thauvin-Robinet, Marie Gonzales, Laurence Faivre, Vincent Laugel, A. S. Weingertner, Pierre Vabres, Julien Thevenon, Jean-Baptiste Rivière, Yannis Duffourd, Marguerite Miguet, Elise Schaefer, Valérie Kremer, and Jean-Louis Mandel
Subjects: 0301 basic medicine, Genetics, Fetus, business.industry, Ichthyosis, Obstetrics and Gynecology, 030105 genetics & heredity, medicine.disease, 03 medical and health sciences, Text mining, Medicine, ERCC2, business, Gene, Genetics (clinical)
Published: 2016
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37. Application of whole-exome sequencing to unravel the molecular basis of undiagnosed syndromic congenital neutropenia with intellectual disability

Author: Jean Donadieu, Delphine Héron, Laurence Faivre, Salima El Chehadeh, Daphné Lehalle, Claire Briandet, Elodie Gautier, Julien Thevenon, Daniel Amram, Thibaud Jouan, Jean-Baptiste Rivière, Judith Melki, Laurence Duplomb-Jego, Frédéric Huet, Christine Bellanné-Chantelot, Christel Thauvin-Robinet, Ange-Line Bruel, Yannis Duffourd, Lucile Pinson, Isabelle Maystadt, Judith St-Onge, Sophia Julia, Alexandra Gauthier-Vasserot, Paul Kuentz, Institut d'hématologie et d'oncologie pédiatrique [CHU - HCL] (IHOPe), Hospices Civils de Lyon (HCL), Génétique des Anomalies du Développement (GAD), IFR100 - Structure fédérative de recherche Santé-STIC-Université de Bourgogne (UB), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Dijon, CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme (GRC), Université Pierre et Marie Curie - Paris 6 (UPMC), Service d'hématologie-immunologie-oncologie pédiatrique [CHU Trousseau], CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Immuno-hématologie pédiatrique (MaRIH), Laboratoire de géographie physique : Environnements Quaternaires et Actuels (LGP), Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Centre de Génétique Humaine, Institut de Pathologie et de Génétique, Université de Namur [Namur] (UNamur), Service de génétique médicale [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Arnaud de Villeneuve, Unité fonctionnelle de génétique clinique, Université Paris Diderot - Paris 7 (UPD7)-Hôpital Robert Debré-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de génétique médicale, CHU Strasbourg-Hôpital de Hautepierre [Strasbourg], Hôpital Bicêtre, Université Paris-Sud - Paris 11 (UP11)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Bicêtre, Centre hospitalier universitaire de Toulouse-Purpan, Institut d'hématologie et d'oncologie pédiatrique [CHU - HCL] ( IHOPe ), Hospices Civils de Lyon ( HCL ), Génétique des Anomalies du Développement ( GAD ), Université de Bourgogne ( UB ) -IFR100 - Structure fédérative de recherche Santé-STIC, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Centre de Référence des Déficiences Intellectuelles de Causes Rares, Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Pitié-Salpêtrière [APHP], Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme ( GRC ), Université Pierre et Marie Curie - Paris 6 ( UPMC ), Service d’oncologie hématologie pédiatrique [CHU Trousseau], Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Trousseau [APHP], Immuno-hématologie pédiatrique ( MaRIH ), Laboratoire de géographie physique ( LGP ), Université Panthéon-Sorbonne ( UP1 ) -Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ) -Centre National de la Recherche Scientifique ( CNRS ), Université de Namur, Centre Hospitalier Régional Universitaire [Montpellier] ( CHRU Montpellier ) -Hôpital Arnaud de Villeneuve, Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 ( UPD7 ), Université Paris-Sud - Paris 11 ( UP11 ) -Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Bicêtre, Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Service de pédiatrie (CHU de Dijon), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), CHU Toulouse [Toulouse], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)
Subjects: Male, 0301 basic medicine, Pediatrics, medicine.medical_specialty, Neutropenia, Adolescent, Neonatal onset, 03 medical and health sciences, 0302 clinical medicine, congenital neutropenia, [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology, Intellectual Disability, Intellectual disability, Genetics, medicine, Congenital Bone Marrow Failure Syndromes, Humans, Exome, Child, Congenital Neutropenia, Genetic Association Studies, Genetics (clinical), Exome sequencing, Retrospective Studies, business.industry, High-Throughput Nucleotide Sequencing, Infant, Syndrome, medicine.disease, 3. Good health, Phenotype, 030104 developmental biology, CHD2, Child, Preschool, 030220 oncology & carcinogenesis, Cohort, Etiology, Female, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Biomarkers
Abstract: International audience; Neutropenia can be qualified as congenital when of neonatal onset or when associated with extra-hematopoietic manifestations. Overall, 30% of patients with congenital neutropenia (CN) remain without a molecular diagnosis after a multidisciplinary consultation and tedious diagnostic strategy. In the rare situations when neutropenia is identified and associated with intellectual disability (ID), there are few diagnostic hypotheses to test. This retrospective multicenter study reports on a clinically heterogeneous cohort of 10 unrelated patients with CN associated with ID and no molecular diagnosis prior to whole-exome sequencing (WES). WES provided a diagnostic yield of 40% (4/10). The results suggested that in many cases neutropenia and syndromic manifestations could not be assigned to the same molecular alteration. Three sub-groups of patients were highlighted: (i) severe, symptomatic chronic neutropenia, detected early in life, and related to a known mutation in the CN spectrum (ELANE); (ii) mild to moderate benign intermittent neutropenia, detected later, and associated with mutations in genes implicated in neurodevelopmental disorders (CHD2, HUWE1); and (iii) moderate to severe intermittent neutropenia as a probably undiagnosed feature of a newly reported syndrome (KAT6A). Unlike KAT6A, which seems to be associated with a syndromic form of CN, the other reported mutations may not explain the entire clinical picture. Although targeted gene sequencing can be discussed for the primary diagnosis of severe CN, we suggest that performing WES for the diagnosis of disorders associating CN with ID will not only provide the etiological diagnosis but will also pave the way towards personalized care and follow-up. (C) 2016 Wiley Periodicals, Inc., (C) 2016 John Wiley & Sons, Ltd
Published: 2016
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38. Disease-causing variants in TCF4 are a frequent cause of intellectual disability: lessons from large-scale sequencing approaches in diagnosis

Author: Anne Boland, Alain Verloes, Jean-François Deleuze, Amélie Piton, Robert Olaso, Jean-Louis Mandel, Laura Mary, Laurence Faivre, Christine Coubes, Bénédicte Gérard, Elise Schaefer, David Geneviève, Claire Feger, Irina Giurgea, Estelle Colin, Francesca Mattioli, Salima El Chehadeh, Dana Timbolschi, Yline Capri, Jennifer Fabre-Teste, Elsa Nourisson, Elisabeth Flori, Magalie Barth, Laurence Perrin, Claire Redin, Laboratoire de Diagnostic Génétique [CHU Strasbourg], Université de Strasbourg (UNISTRA)-CHU Strasbourg, Institut de génétique et biologie moléculaire et cellulaire (IGBMC), Université Louis Pasteur - Strasbourg I-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service de génétique médicale, CHU Strasbourg-Hôpital de Hautepierre [Strasbourg], Collège de France (CdF (institution)), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), MitoVasc - Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Unité fonctionnelle de génétique clinique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Institut de Biologie François JACOB (JACOB), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Maladies génétiques d'expression pédiatrique (U933), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service de Génétique, Hôpital de Hautepierre [Strasbourg], Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC), Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université d'Angers (UA), Service de cytogénétique, Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Physiopathologie, conséquences fonctionnelles et neuroprotection des atteintes du cerveau en développement, Université Paris Diderot - Paris 7 (UPD7)-IFR2-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de génétique [Robert Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Université Paris Diderot - Paris 7 (UPD7)-Hôpital Robert Debré-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre National de Génotypage, Institut de Génomique, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Service d'hématologie et immunologie, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP - Hôpital Bichat - Claude Bernard [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7), Physiopathologie des maladies génétiques d'expression pédiatrique (UMRS_933), Sorbonne Université (SU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Inst MitoVasc, Equipe MitoLab, Université d'Angers (UA), Département de génétique médicale, maladies rares et médecine personnalisée [CHRU de Montpellier], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-AP-HP - Hôpital Bichat - Claude Bernard [Paris]-Université Paris Diderot - Paris 7 (UPD7), Physiopathologie des maladies génétiques d'expression pédiatrique, and Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)
Subjects: 0301 basic medicine, Male, [SDV]Life Sciences [q-bio], Intellectual disability, Disease, 030105 genetics & heredity, Bioinformatics, medicine.disease_cause, Transcription Factor 4, MESH: Young adult, MESH: Child, Hyperventilation, 10. No inequality, Child, MESH: Transcription factor 4 / genetics, Genetics (clinical), MESH: Hyperventilation / genetics, Sanger sequencing, Mutation, High-Throughput Nucleotide Sequencing, TCF4, 3. Good health, Phenotype, MESH: Facies, Child, Preschool, Cohort, symbols, Female, MESH: Hight-throughput Nucleotide sequencing, Adult, MESH: Mutation, Adolescent, MESH: Phenotype, Article, MESH: Child, preschool, 03 medical and health sciences, symbols.namesake, Young Adult, Genetics, medicine, Humans, MESH: Adolescent, MESH: Humans, MESH: Hyperventilation / diagnosis, business.industry, Facies, MESH: Adult, medicine.disease, MESH: Male, MESH: Intellectual Disability / pathology, Human genome, business, Large-Scale Sequencing, MESH: Female
Abstract: IF 3.636 (2017); International audience; High-throughput sequencing (HTS) of human genome coding regions allows the simultaneous screen of a large number of genes, significantly improving the diagnosis of non-syndromic intellectual disabilities (ID). HTS studies permit the redefinition of the phenotypical spectrum of known disease-causing genes, escaping the clinical inclusion bias of gene-by-gene Sanger sequencing. We studied a cohort of 903 patients with ID not reminiscent of a well-known syndrome, using an ID-targeted HTS of several hundred genes and found de novo heterozygous variants in TCF4 (transcription factor 4) in eight novel patients. Piecing together the patients from this study and those from previous large-scale unbiased HTS studies, we estimated the rate of individuals with ID carrying a disease-causing TCF4 mutation to 0.7%. So far, TCF4 molecular abnormalities were known to cause a syndromic form of ID, Pitt–Hopkins syndrome (PTHS), which combines severe ID, developmental delay, absence of speech, behavioral and ventilation disorders, and a distinctive facial gestalt. Therefore, we reevaluated ten patients carrying a pathogenic or likely pathogenic variant in TCF4 (eight patients included in this study and two from our previous ID-HTS study) for PTHS criteria defined by Whalen and Marangi. A posteriori, five patients had a score highly evocative of PTHS, three were possibly consistent with this diagnosis, and two had a score below the defined PTHS threshold. In conclusion, these results highlight TCF4 as a frequent cause of moderate to profound ID and broaden the clinical spectrum associated to TCF4 mutations to nonspecific ID.
Published: 2018
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39. Further delineation of the MECP2 duplication syndrome phenotype in 59 French male patients, with a particular focus on morphological and neurological features

Author: Sophie Scheidecker, Françoise Devillard, Gaetan Lesca, Maryline Carneiro, Christèle Dubourg, Ganaëlle Remerand, Catherine Badens, Odile Boespflug-Tanguy, Nathalie Marle, Serge Romana, Nadia Bahi-Buisson, Jean-Paul Bonnefont, Hubert Journel, Bénédicte Duban-Bedu, Brigitte Gilbert-Dussardier, Mathilde Nizon, Nathalie Perreton, Sophie Julia, Cyril Goizet, Delphine Héron, Véronique Satre, Marguerite Miguet, Joris Andrieux, Pierre-Simon Jouk, Laurence Perrin, Renaud Touraine, Ghislaine Plessis, Dominique Martin-Coignard, Caroline Rooryck, Catherine Vincent-Delorme, Laurence Faivre, Salima El Chehadeh, Thierry Bienvenu, Jean-Luc Alessandri, Anne-Claude Tabet, Laurent Pasquier, Martine Raynaud, Réseau AChro-Puce, Marjolaine Willems, Bruno Leheup, Marianne Till, Jeanne Amiel, Jacqueline Vigneron, Nicole Philip, Valérie Kremer, Massimiliano Rossi, Boris Keren, Annick Toutain, Fabienne Prieur, Bertrand Isidor, Séverine Drunat, Marilyn Lackmy-Port-Lis, Albert David, Christel Thauvin-Robinet, Damien Sanlaville, Laetitia Lambert, Lydie Burglen, Klaus Dieterich, Catherine Sarret, Anne Moncla, Didier Lacombe, Fanny Laffargue, Kim Maincent, Marlène Rio, Clarisse Baumann, Mathilde Lefebvre, Sabine Sigaudy, Laurent Guibaud, Adeline Vigouroux, Valérie Malan, Patrick Callier, Chantal Missirian, Christophe Philippe, Christine Francannet, Anne-Laure Mosca-Boidron, Valérie Cormier-Daire, Cédric Le Caignec, Vincent des Portes, Charles Coutton, Alexandra Afenjar, Sandrine Chantot-Bastaraud, Julien Thevenon, Mylène Béri-Dexheimer, Hilde Van Esch, Bernard Echenne, Jean-Marie Cuisset, Jean-Michel Pedespan, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), FHU TRANSLAD (CHU de Dijon), Service de Génétique Médicale [CHU Necker], CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de Génétique Clinique (CHU de Saint-Etienne), Centre Hospitalier Universitaire de Saint-Etienne (CHU de Saint-Etienne), Service de Génétique Clinique [CHU Rennes] (Réseau de Génétique et Génomique Médicale), Hôpitaux Universitaires du Grand Ouest, Laboratoire de Génétique Moléculaire & Génomique [CHU Rennes], CHU Pontchaillou [Rennes], Service de génétique médicale [Toulouse], CHU Toulouse [Toulouse]-Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse], Image Guided Clinical Neurosciences and Connectomics (IGCNC), Université d'Auvergne - Clermont-Ferrand I (UdA), Service de Génétique Médicale [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Service de neuropédiatrie et maladies métaboliques [CHU Robert-Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré, Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), Service de Génétique Médicale [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Laboratoire de Génétique Médicale (CHU de Nancy), Centre hospitalier universitaire de Nantes (CHU Nantes), Service de neuro-pédiatrie (CHRU de Lille), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Laboratoire de Génétique Médicale, Hopital Jeanne de Flandre, Service de Génétique [CHU Caen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), Service de génétique [Tours], Hôpital Bretonneau-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Service de Radiologie [Hôpital Femme Mère Enfant - HCL], Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Service de génétique clinique [CHU Necker], Département de neurologie pédiatrique [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Génétique médicale [Centre Hospitalier de Vannes], Centre hospitalier Bretagne Atlantique (Morbihan) (CHBA), Service de génétique et embryologie médicales [CHU Trousseau], CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Biochimie et biologie moléculaire, Hôpital Cochin [AP-HP], Service de génétique clinique [Debré], Dynamique Cellulaire et Tissulaire- Interdisciplinarité, Modèles & Microscopies (TIMC-IMAG-DyCTiM), Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525 (TIMC-IMAG), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Maladies rares, génétique et métabolisme / Rare Diseases, Genetics and Metabolism, Institut National de la Santé et de la Recherche Médicale (INSERM)-École de sage femme - Groupe hospitalier Pellegrin - CHU de Bordeaux, Service de Génétique Médicale du CHU de Bordeaux, Département de génétique médicale [Hôpital de la Timone - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de génétique chromosomique [Hôpital de la Timone - APHM], Hôpital de la Timone [CHU - APHM] (TIMONE), Laboratoire de Biologie Moléculaire (MARSEILLE - Biolo Moléculaire), Assistance Publique - Hôpitaux de Marseille (APHM), CIC 1407, Hospices Civils de Lyon (HCL), Service de neurologie pédiatrique [CHU de Bordeaux], CHU de Bordeaux Pellegrin [Bordeaux], Clinique de Génétique médicale Guy Fontaine [CHRU LIlle], Centre de Génétique Chromosomique [Hôpital Saint Vincent de Paul], GHICL-Hôpital Saint Vincent de Paul, Service de Neuropédiatrie [CHU Necker - Enfants Malades], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Pitié-Salpêtrière [AP-HP], Centre Hospitalier Universitaire de La Réunion (CHU La Réunion), Laboratoire de génétique médicale et cytogénétique [Le Mans], Centre Hospitalier Le Mans (CH Le Mans), Service de Génétique [HCL Groupement Hospitalier Est], Groupement hospitalier Lyon-Est, Centre de recherche en neurosciences de Lyon (CRNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Génétique Moléculaire [CHU Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Laboratoire de Génétique Chromosomique et Moléculaire [CHU Dijon], Sarcomes osseux et remodelage des tissus calcifiés - Phy-Os [Nantes - INSERM U1238] (Phy-Os), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Université Bretagne Loire (UBL), Laboratoire de Cytogénétique Constitutionnelle [Hospices civils de Lyon], Service de Neurologie Pédiatrique [CHU Lyon], Service Génétique Médicale [CHU Poitiers], Centre hospitalier universitaire de Poitiers (CHU Poitiers), Service de génétique médicale [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Arnaud de Villeneuve, Centre for Human Genetics, University Hospitals Leuven [Leuven], Institut des Sciences cognitives Marc Jeannerod - Laboratoire sur le langage, le cerveau et la cognition (L2C2), École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Centre de référence des déficiences intellectuelles de causes rares (Hospices Civils de Lyon), Hospices civils de Lyon (HCL), Equipe GAD (LNC - U1231), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E), Service de génétique clinique [Rennes], Université de Rennes (UR)-CHU Pontchaillou [Rennes]-hôpital Sud, Laboratoire de génétique moléculaire et génomique médicale [CHU Rennes], Service Génétique Médicale [CHU Toulouse], Institut Fédératif de Biologie (IFB), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Pôle Biologie [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Dynamiques Cellulaire et Tissulaire - Interdisciplinarité, Modélisation & Microscopie (TIMC-IMAG-DyCTiM2), Hôpital Saint Vincent de Paul-Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Groupement Hospitalier Lyon-Est (GHE), Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Bretagne Loire (UBL)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, and Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS)
Subjects: 0301 basic medicine, Pediatrics, medicine.medical_specialty, MECP2 duplication syndrome, MECP2gene, Scoliosis, MECP2duplication syndrome, 03 medical and health sciences, Epilepsy, 0302 clinical medicine, Gene duplication, Genetics, medicine, Spasticity, Genetics (clinical), X-linked, Vasomotor, business.industry, facial dysmorphism, medicine.disease, Gait, Hypotonia, 3. Good health, 030104 developmental biology, Xq28 duplication, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, medicine.symptom, business, 030217 neurology & neurosurgery, genetic counselling
Abstract: The Xq28 duplication involving theMECP2gene (MECP2duplication) has been mainly described in male patients with severe developmental delay (DD) associated with spasticity, stereotypic movements and recurrent infections. Nevertheless, only a few series have been published. We aimed to better describe the phenotype of this condition, with a focus on morphological and neurological features. Through a national collaborative study, we report a large French series of 59 affected males with interstitialMECP2duplication. Most of the patients (93%) shared similar facial features, which evolved with age (midface hypoplasia, narrow and prominent nasal bridge, thick lower lip, large prominent ears), thick hair, livedo of the limbs, tapered fingers, small feet and vasomotor troubles. Early hypotonia and global DD were constant, with 21% of patients unable to walk. In patients able to stand, lower limbs weakness and spasticity led to a singular standing habitus: flexion of the knees, broad-based stance with pseudo-ataxic gait. Scoliosis was frequent (53%), such as divergent strabismus (76%) and hypermetropia (54%), stereotypic movements (89%), without obvious social withdrawal and decreased pain sensitivity (78%). Most of the patients did not develop expressive language, 35% saying few words. Epilepsy was frequent (59%), with a mean onset around 7.4 years of age, and often (62%) drug-resistant. Other medical issues were frequent: constipation (78%), and recurrent infections (89%), mainly lung. We delineate the clinical phenotype ofMECP2duplication syndrome in a large series of 59 males. Pulmonary hypertension appeared as a cause of early death in these patients, advocating its screening early in life.
Published: 2018
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40. Genetic counselling difficulties and ethical implications of incidental findings from array-CGH: a 7-year national survey

Author: Jeanne Amiel, Sophie Julia, Catherine Vincent-Delorme, Christel Thauvin-Robinet, Paul Kuentz, Salima El Chehadeh, Stanislas Lyonnet, Bruno Leheup, Elodie Gautier, Odile Boute-Benejean, Nathalie Le Meur, Sandrine Marlin, Irène François, Delphine Héron, Marianne Till, Patrick Edery, Houda Karmous Benailly, Serge Romana, Nicole Philip, Patrick Callier, Valérie Cormier-Daire, Bénédicte Héron, Adeline Vigouroux-Castera, Mathilde Lefebvre, Chantal Missirian, Sylvie Odent, Fanny Morice-Picard, Roseline Caumes, Dominique Martin, Cédric Le Caignec, Nicolas Chassaing, Claire Benneteau, Anne-Laure Mosca-Boidron, Claude Ferrec, Anne-Marie Guerrot, Sylvie Manouvrier-Hanu, Eva Piparas, Damien Sanlaville, Florence Petit, Stéphanie Arpin, Sébastien Moutton, Marie-Pierre Alex-Cordier, Elodie Cretin, Laurence Faivre, Sabine Sigaudy, Tiffany Busa, Brigitte Gilbert-Dussardier, Sandra Chantot-Bastaraud, Julien Thevenon, Alexandra Afenjar, Annick Toutain, Boris Keren, Anne Philippe, Valérie Malan, Laetitia Lambert, Sandra Mercier, Elise Schaefer, James Lespinasse, Nathalie Marle, Sylvia Redon, Fabienne Giuliano, Isabelle Mortemousque, Philippe Khau Van Kien, Pierre Bitoun, Alice Goldenberg, Sophie Blesson, and Michèle Marti-Dramard
Subjects: 0301 basic medicine, Genetics, medicine.medical_specialty, education.field_of_study, Ethical issues, business.industry, Genetic counseling, Population, Retrospective cohort study, 030105 genetics & heredity, medicine.disease, Penetrance, 3. Good health, 03 medical and health sciences, Generalization (learning), Family medicine, Intellectual disability, Medicine, business, education, Genetics (clinical), Comparative genomic hybridization
Abstract: Microarray-based comparative genomic hybridization (aCGH) is commonly used in diagnosing patients with intellectual disability (ID) with or without congenital malformation. Because aCGH interrogates with the whole genome, there is a risk of being confronted with incidental findings (IF). In order to anticipate the ethical issues of IF with the generalization of new genome-wide analysis technologies, we questioned French clinicians and cytogeneticists about the situations they have faced regarding IF from aCGH. Sixty-five IF were reported. Forty corresponded to autosomal dominant diseases with incomplete penetrance, 7 to autosomal dominant diseases with complete penetrance, 14 to X-linked diseases, and 4 were heterozygotes for autosomal recessive diseases with a high prevalence of heterozygotes in the population. Therapeutic/preventive measures or genetic counselling could be argued for all cases except four. These four IF were intentionally not returned to the patients. Clinicians reported difficulties in returning the results in 29% of the cases, mainly when the question of IF had not been anticipated. Indeed, at the time of the investigation, only 48% of the clinicians used consents mentioning the risk of IF. With the emergence of new technologies, there is a need to report such national experiences; they show the importance of pre-test information on IF.
Published: 2016
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41. Severe X-linked chondrodysplasia punctata in nine new female fetuses

Author: Nadège Gigot, Julie Désir, Jean-Baptiste Rivière, Marie Gonzales, N. Joye, Bernard Aral, Dominique D'Olne, Frédérique Jossic, Caroline Daelemans, Anne-Lise Delezoide, Valérie Cormier-Daire, Alice Masurel-Paulet, Annick Toutain, Claude Vibert-Guigue, Judith Saint-Onge, Julien Thevenon, Sébastien Schmitt, Jean-Marc Labaune, Laurence Faivre, Antonin Lamaziere, Fabienne Dufernez, Fanny Pelluard, Nicole Bigi, Mathilde Lefebvre, Thierry Rousseau, Raphaele Mangione, Pierre Vabres, P. Herve, Sophie Blesson, Ange-Line Bruel, Luc Rigonnot, Christel Thauvin-Robinet, Salima El Chehadeh, Nicole Laurent, and Catherine Vincent-Delorme
Subjects: Stippling (dentistry), Fetus, business.industry, Ichthyosis, Obstetrics and Gynecology, Physiology, Anatomy, medicine.disease, 3. Good health, medicine.anatomical_structure, Dysplasia, Epiphysis, Gestation, Medicine, Chondrodysplasia punctata, business, Genetics (clinical), Epiphyseal stippling
Abstract: ObjectivesConradi-Hunermann-Happle [X-linked dominant chondrodysplasia punctata 2 (CDPX2)] syndrome is a rare X-linked dominant skeletal dysplasia usually lethal in men while affected women show wide clinical heterogeneity. Different EBP mutations have been reported. Severe female cases have rarely been reported, with only six antenatal presentations. MethodsTo better characterize the phenotype in female fetuses, we included nine antenatally diagnosed cases of women with EBP mutations. All cases were de novo except for two fetuses with an affected mother and one case of germinal mosaicism. ResultsThe mean age at diagnosis was 22weeks of gestation. The ultrasound features mainly included bone abnormalities: shortening (8/9 cases) and bowing of the long bones (5/9), punctuate epiphysis (7/9) and an irregular aspect of the spine (5/9). Postnatal X-rays and examination showed ichthyosis (8/9) and epiphyseal stippling (9/9), with frequent asymmetric short and bowed long bones. The X-inactivation pattern of the familial case revealed skewed X-inactivation in the mildly symptomatic mother and random X-inactivation in the severe fetal case. Differently affected skin samples of the same fetus revealed different patterns of X-inactivation. ConclusionPrenatal detection of asymmetric shortening and bowing of the long bones and cartilage stippling should raise the possibility of CPDX2 in female fetuses, especially because the majority of such cases involve de novo mutations.
Published: 2015
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42. De novo mutations in MSL3 cause an X-linked syndrome marked by impaired histone H4 lysine 16 acetylation

Author: Olivier Vanakker, Maria Kirchhoff, Christian Gilissen, Jenny Morton, Ineke van der Burgt, Kelly Radtke, Tugce Aktas, Sarah Vergult, Diana Johnson, Tobias Rumpf, Tony Roscioli, André Reis, Alan Fryer, Salima El Chehadeh, Christel Thauvin-Robinet, Ange Line Bruel, Rolph Pfundt, Sander Pajusalu, David Francis, Asifa Akhtar, Iben Bache, Tiong Yang Tan, Vera M. Kalscheuer, Meredith Wilson, Björn Menten, Giuseppe Semplicio, Julien Thevenon, Richard Fisher, Yannis Duffourd, Gerhard Mittler, Witold G. Szymanski, M. Felicia Basilicata, Victoria McKay, Kristin Lindstrom, Han G. Brunner, Katrin Õunap, Jaya Ganesh, Claudia Isabelle Keller Valsecchi, Megan T. Cho, Laurence Faivre, MUMC+: DA Klinische Genetica (5), Klinische Genetica, RS: GROW - R4 - Reproductive and Perinatal Medicine, Max Planck Institute of Immunobiology and Epigenetics (MPI-IE), Max-Planck-Gesellschaft, Equipe GAD (LNC - U1231), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), FHU TRANSLAD (CHU de Dijon), Université Bourgogne Franche-Comté [COMUE] (UBFC), West Midlands Regional Genetics Laboratory and Clinical Genetics Unit, Birmingham Women's Hospital, Copenhagen University Hospitals, Radboud University Medical Center [Nijmegen], Center for Medical Genetics [Ghent], Ghent University Hospital, Donders Institute for Brain, Cognition and Behaviour, Radboud university [Nijmegen], GeneDx [Gaithersburg, MD, USA], Murdoch Children's Research Institute (MCRI), Department of Clinical Genetics [Copenhagen], Rigshospitalet [Copenhagen], Copenhagen University Hospital-Copenhagen University Hospital, Institute of Human Genetics [Erlangen, Allemagne], Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Department of Clinical Genetics (Sheffield Children’s NHS Foundation Trust), Sheffield Children's NHS Foundation Trust, Liverpool Women's NHS Foundation Trust, Institute for Advanced Biosciences / Institut pour l'Avancée des Biosciences (Grenoble) (IAB), and Centre Hospitalier Universitaire [Grenoble] (CHU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang - Auvergne-Rhône-Alpes (EFS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])
Subjects: Male, 0301 basic medicine, CHROMATIN, INTELLECTUAL DISABILITY, Chromosomal Proteins, Non-Histone, CHROMOSOME, Cohort Studies, Histones, Mice, Genes, X-Linked, MSL complex, Child, Cells, Cultured, Histone Acetyltransferases, Epigenomics, Acetylation, Genetic Diseases, X-Linked, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], Syndrome, Chromatin, Cell biology, DNA-Binding Proteins, DROSOPHILA, Histone, ACETYLTRANSFERASE, Child, Preschool, Female, Adolescent, Mice, Transgenic, Biology, Article, Histone H4, 03 medical and health sciences, All institutes and research themes of the Radboud University Medical Center, Genetics, Animals, Humans, CELL-CYCLE, Epigenetics, DEACETYLASE, MOF, MSL3, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], DOSAGE COMPENSATION COMPLEX, Infant, Dosage compensation complex, PROTEIN INTERACTIONS, HEK293 Cells, 030104 developmental biology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Neurodevelopmental Disorders, Case-Control Studies, Mutation, biology.protein, Histone deacetylase, Protein Processing, Post-Translational, Transcription Factors, Ultra-rare developmental disorders
Abstract: International audience; The etiological spectrum of ultra-rare developmental disorders remains to be fully defined. Chromatin regulatory mechanisms maintain cellular identity and function, where misregulation may lead to developmental defects. Here, we report pathogenic variations in MSL3, which encodes a member of the chromatin-associated male-specific lethal (MSL) complex responsible for bulk histone H4 lysine 16 acetylation (H4K16ac) in flies and mammals. These variants cause an X-linked syndrome affecting both sexes. Clinical features of the syndrome include global developmental delay, progressive gait disturbance, and recognizable facial dysmorphism. MSL3 mutations affect MSL complex assembly and activity, accompanied by a pronounced loss of H4K16ac levels in vivo. Patient-derived cells display global transcriptome alterations of pathways involved in morphogenesis and cell migration. Finally, we use histone deacetylase inhibitors to rebalance acetylation levels, alleviating some of the molecular and cellular phenotypes of patient cells. Taken together, we characterize a syndrome that allowed us to decipher the developmental importance of MSL3 in humans.
Published: 2018
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43. Clinical whole-exome sequencing for the diagnosis of rare disorders with congenital anomalies and/or intellectual disability: substantial interest of prospective annual reanalysis

Author: Judith St-Onge, Antonio Vitobello, Pierre Vabres, Nolwenn Jean-Marçais, Daphné Lehalle, Charlotte Poe, Virginie Carmignac, Ange-Line Bruel, Paul Kuentz, Patrick Callier, Jean-Baptiste Rivière, Christophe Philippe, Laurence Faivre, Emilie Tisserant, Salima El Chehadeh-Djebbar, Frédéric Tran Mau-Them, Julien Thevenon, Yannis Duffourd, Christel Thauvin-Robinet, Alice Masurel-Paulet, Anne-Laure Mosca-Boidron, Thibaud Jouan, Martin Chevarin, Sophie Nambot, Mathilde Lefebvre, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), FHU TRANSLAD, Equipe GAD (LNC - U1231), Lipides - Nutrition - Cancer [Dijon - U1231] ( LNC ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), FHU TRANSLAD (CHU de Dijon), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), and Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: 0301 basic medicine, medicine.medical_specialty, Pediatrics, Congenital anomalies, Intellectual disability, Translational research, Clinical WES data, Congenital Abnormalities, 03 medical and health sciences, Rare Diseases, Databases, Genetic, Exome Sequencing, medicine, Humans, Exome, Genetic Testing, [ SDV.GEN.GH ] Life Sciences [q-bio]/Genetics/Human genetics, Genetics (clinical), Exome sequencing, Genetic testing, Retrospective Studies, medicine.diagnostic_test, business.industry, High-Throughput Nucleotide Sequencing, Retrospective cohort study, Sequence Analysis, DNA, medicine.disease, Additional research, 3. Good health, 030104 developmental biology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Whole-exome sequencing, Physical therapy, Raw data, business
Abstract: International audience; PurposeCongenital anomalies and intellectual disability (CA/ID) are a major diagnostic challenge in medical genetics—50% of patients still have no molecular diagnosis after a long and stressful diagnostic “odyssey.” Solo clinical whole-exome sequencing (WES) was applied in our genetics center to improve diagnosis in patients with CA/ID.MethodsThis retrospective study examined 416 consecutive tests performed over 3 years to demonstrate the effectiveness of periodically reanalyzing WES data. The raw data from each nonpositive test was reanalyzed at 12 months with the most recent pipeline and in the light of new data in the literature. The results of the reanalysis for patients enrolled in the third year are not yet available.ResultsOf the 416 patients included, data for 156 without a diagnosis were reanalyzed. We obtained 24 (15.4%) additional diagnoses: 12 through the usual diagnostic process (7 new publications, 4 initially misclassified, and 1 copy-number variant), and 12 through translational research by international data sharing. The final yield of positive results was 27.9% through a strict diagnostic approach, and 2.9% through an additional research strategy.ConclusionThis article highlights the effectiveness of periodically combining diagnostic reinterpretation of clinical WES data with translational research involving data sharing for candidate genes.
Published: 2017
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44. Reducing diagnostic turnaround times of exome sequencing for families requiring timely diagnoses

Author: Judith St-Onge, Anne-Laure Mosca-Boidron, Thibaud Jouan, Frédéric Tran-Mau-Them, Ange-Line Bruel, Laetitia Lambert, Sebastien Moutton, Aurélie Bourchany, Nolwenn Jean, Aurélia Jaquette, Christel Thauvin-Robinet, Daphné Lehalle, Elise Schaefer, Nada Houcinat, Charlotte Poe, Yannis Duffourd, Paul Kuentz, Salima El Chehadeh-Djebbar, Alice Masurel-Paulet, Martin Chevarin, Laurence Faivre, Sophie Nambot, Marjorie Willems, Mathilde Lefebvre, Nicole Laurent, Antonio Vitobello, Frédéric Huet, Julien Thevenon, Patrick Callier, Jean-Baptiste Rivière, Christophe Philippe, Equipe GAD (LNC - U1231), Lipides - Nutrition - Cancer [Dijon - U1231] ( LNC ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Service de pédiatrie (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), FHU TRANSLAD, Département de Génétique Clinique [CHRU de Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] ( CHRU Montpellier ), Service de Médecine Infantile III et Génétique Clinique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy ( CHRU Nancy ), Service de Génétique Médicale, Hôpital Civil, Strasbourg, Centre de Génétique (Hôpital de la Pitié-Salpétrière, Paris), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques, Université Montpellier 1 ( UM1 ) -IFR3-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université de Montpellier ( UM ), Service de Pathologie [CHU de Dijon], Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), FHU TRANSLAD (CHU de Dijon), Département génétique méd, mal rares et médecine personnalisée [CHRU de Montpellier], Pôle Biologie-Pathologie [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), Université Montpellier 1 (UM1)-IFR3, and Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)
Subjects: 0301 basic medicine, Adult, Male, Exome sequencing, medicine.medical_specialty, Time Factors, Adolescent, Genetic counseling, Bioinformatics, Turnaround time, Sensitivity and Specificity, Undiagnosed genetic conditions, 03 medical and health sciences, Genetics, medicine, Humans, Exome, Genetic Testing, Medical diagnosis, Intensive care medicine, Child, Genetics (clinical), Genetic testing, Whole genome sequencing, [SDV.GEN]Life Sciences [q-bio]/Genetics, medicine.diagnostic_test, business.industry, Infant, Newborn, Infant, General Medicine, Sequence Analysis, DNA, Diagnostic turnaround time, 3. Good health, Clinical trial, 030104 developmental biology, Early Diagnosis, Child, Preschool, Female, business, [ SDV.GEN ] Life Sciences [q-bio]/Genetics
Abstract: IF 2.137; International audience; BACKGROUND AND OBJECTIVE:Whole-exome sequencing (WES) has now entered medical practice with powerful applications in the diagnosis of rare Mendelian disorders. Although the usefulness and cost-effectiveness of WES have been widely demonstrated, it is essential to reduce the diagnostic turnaround time to make WES a first-line procedure. Since 2011, the automation of laboratory procedures and advances in sequencing chemistry have made it possible to carry out diagnostic whole genome sequencing from the blood sample to molecular diagnosis of suspected genetic disorders within 50 h. Taking advantage of these advances, the main objective of the study was to improve turnaround times for sequencing results.METHODS:WES was proposed to 29 patients with severe undiagnosed disorders with developmental abnormalities and faced with medical situations requiring rapid diagnosis. Each family gave consent. The extracted DNA was sequenced on a NextSeq500 (Illumina) instrument. Data were analyzed following standard procedures. Variants were interpreted using in-house software. Each rare variant affecting protein sequences with clinical relevance was tested for familial segregation.RESULTS:The diagnostic rate was 45% (13/29), with a mean turnaround time of 40 days from reception of the specimen to delivery of results to the referring physician. Besides permitting genetic counseling, the rapid diagnosis for positive families led to two pre-natal diagnoses and two inclusions in clinical trials.CONCLUSIONS:This pilot study demonstrated the feasibility of rapid diagnostic WES in our primary genetics center. It reduced the diagnostic odyssey and helped provide support to families.Copyright © 2017 Elsevier Masson SAS. All rights reserved.
Published: 2017
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45. Further delineation of the

Author: Marguerite, Miguet, Laurence, Faivre, Jeanne, Amiel, Mathilde, Nizon, Renaud, Touraine, Fabienne, Prieur, Laurent, Pasquier, Mathilde, Lefebvre, Julien, Thevenon, Christèle, Dubourg, Sophie, Julia, Catherine, Sarret, Ganaëlle, Remerand, Christine, Francannet, Fanny, Laffargue, Odile, Boespflug-Tanguy, Albert, David, Bertrand, Isidor, Jacqueline, Vigneron, Bruno, Leheup, Laetitia, Lambert, Christophe, Philippe, Mylène, Béri-Dexheimer, Jean-Marie, Cuisset, Joris, Andrieux, Ghislaine, Plessis, Annick, Toutain, Laurent, Guibaud, Valérie, Cormier-Daire, Marlene, Rio, Jean-Paul, Bonnefont, Bernard, Echenne, Hubert, Journel, Lydie, Burglen, Sandrine, Chantot-Bastaraud, Thierry, Bienvenu, Clarisse, Baumann, Laurence, Perrin, Séverine, Drunat, Pierre-Simon, Jouk, Klaus, Dieterich, Françoise, Devillard, Didier, Lacombe, Nicole, Philip, Sabine, Sigaudy, Anne, Moncla, Chantal, Missirian, Catherine, Badens, Nathalie, Perreton, Christel, Thauvin-Robinet, Réseau, AChro-Puce, Jean-Michel, Pedespan, Caroline, Rooryck, Cyril, Goizet, Catherine, Vincent-Delorme, Bénédicte, Duban-Bedu, Nadia, Bahi-Buisson, Alexandra, Afenjar, Kim, Maincent, Delphine, Héron, Jean-Luc, Alessandri, Dominique, Martin-Coignard, Gaëtan, Lesca, Massimiliano, Rossi, Martine, Raynaud, Patrick, Callier, Anne-Laure, Mosca-Boidron, Nathalie, Marle, Charles, Coutton, Véronique, Satre, Cédric Le, Caignec, Valérie, Malan, Serge, Romana, Boris, Keren, Anne-Claude, Tabet, Valérie, Kremer, Sophie, Scheidecker, Adeline, Vigouroux, Marilyn, Lackmy-Port-Lis, Damien, Sanlaville, Marianne, Till, Maryline, Carneiro, Brigitte, Gilbert-Dussardier, Marjolaine, Willems, Hilde, Van Esch, Vincent Des, Portes, and Salima, El Chehadeh
Subjects: Adult, Male, Chromosomes, Human, X, Epilepsy, Adolescent, Methyl-CpG-Binding Protein 2, Developmental Disabilities, Hypertension, Pulmonary, Infant, Stereotypic Movement Disorder, Pedigree, Young Adult, Hyperopia, Phenotype, Child, Preschool, Intellectual Disability, Mental Retardation, X-Linked, Somatosensory Disorders, Exotropia, Humans, France, Child
Abstract: The Xq28 duplication involving the
Published: 2017

46. Phenotype and genotype analysis of a French cohort of 119 patients with CHARGE syndrome

Author: Montserrat Rodríguez-Ballesteros, Laurence Faivre, Pierre-Simon Jouk, Christine Francannet, Damien Sanlaville, Sophie Naudion, Hélène Dollfus, Nicole Philip, Pierre Sarda, Marine Legendre, X. Piguel, Alice Masurel-Paulet, Marie-Ange Delrue, Frédéric Bilan, Aurélia Jacquette, Dominique Bonneau, Catherine Vincent-Delorme, Valérie Layet, Michèle Mathieu-Dramard, Delphine Héron, Sébastien Moutton, Alice Goldenberg, Sophie Julia, Sophie Blesson, Sylvie Odent, Philippe Parent, Chloé Quélin, Estelle Colin, Mélanie Fradin, Anne-Marie Guerrot, David Geneviève, Lucile Pinson, Renaud Touraine, Sabine Sigaudy, Stéphanie Ragot, Didier Lacombe, Massimiliano Rossi, Salima El Chehadeh, Tiffany Busa, Annick Toutain, Stanislas Lyonnet, Véronique Abadie, Bruno Leheup, Dominique Martin-Coignard, Tania Attié-Bitach, Brigitte Gilbert-Dussardier, Sandra Mercier, Centre hospitalier universitaire de Poitiers (CHU Poitiers), Service de génétique clinique [Poitiers], Unité neurovasculaire et troubles cognitifs (Neuvacod), Université de Poitiers, Santé mentale et santé publique (SMSP - U1178), Université Paris-Sud - Paris 11 (UP11)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de Génétique Médicale [CHU Necker], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Embryology and genetics of human malformation (Equipe Inserm U1163), Imagine - Institut des maladies génétiques (IMAGINE - U1163), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Génétique Médicale et Génomique Fonctionnelle (GMGF), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Département de génétique médicale [Hôpital de la Timone - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM), MitoVasc - Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service de génétique [Angers], Université d'Angers (UA)-Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), Institut de génétique et biologie moléculaire et cellulaire (IGBMC), Université Louis Pasteur - Strasbourg I-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service de génétique médicale, Université de Bordeaux (UB)-CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de génétique [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Epidémiologie et analyses en santé publique : risques, maladies chroniques et handicaps (LEASP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Le Mans (CH Le Mans), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Service de Génétique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Service de génétique clinique [Rennes], Université de Rennes (UR)-CHU Pontchaillou [Rennes]-hôpital Sud, Centre Hospitalier Universitaire [Grenoble] (CHU), Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), Génétique des Anomalies du Développement (GAD), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Service de Génétique Médicale [Lille], Institut de génétique médicale-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Service de Génétique Médicale [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Unité de génétique médicale et oncogénétique [CHU Amiens Picardie], CHU Amiens-Picardie, Service de génétique [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Institut de Myologie, Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Association française contre les myopathies (AFM-Téléthon)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E), Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service de génétique médicale [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Arnaud de Villeneuve, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Service de Cardiologie (hôpital général, CHU Dijon), Hôpital général (CHU Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Service Endocrinologie [CHU Poitiers], Service Génétique Médicale [CHU Poitiers], French Ministry of Health ID-RCB: 2010-A00700-39, Santé mentale et santé publique ( SMSP - U1178 ), Université Paris-Sud - Paris 11 ( UP11 ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Hopital Necker-Enfants Malades-Assistance publique - Hôpitaux de Paris (AP-HP), Génétique Médicale et Génomique Fonctionnelle ( GMGF ), Aix Marseille Université ( AMU ) -Assistance Publique - Hôpitaux de Marseille ( APHM ) - Hôpital de la Timone [CHU - APHM] ( TIMONE ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Aix Marseille Université ( AMU ) -Assistance Publique - Hôpitaux de Marseille ( APHM ) - Hôpital de la Timone [CHU - APHM] ( TIMONE ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Institut de Médecine Aérospatiale du Service de Santé des Armées ( IMASSA ), Service de Santé des Armées, Université d'Angers ( UA ) -CHU Angers, Institut de génétique et biologie moléculaire et cellulaire ( IGBMC ), Université Louis Pasteur - Strasbourg I-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Université de Bordeaux ( UB ) -CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Hôpital Bretonneau-CHRU Tours, Epidémiologie et anlyses en santé publique: risques, maladies chroniques et handicaps, Université Paul Sabatier - Toulouse 3 ( UPS ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laboratoire de génétique médicale et cytogénétique [Le Mans], CH Le Mans, Cellules souches mésenchymateuses, environnement articulaire et immunothérapies de la polyarthrite rhumatoide, Université Montpellier 1 ( UM1 ) -IFR3-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Service de Médecine Nucléaire [Nancy], Centre Hospitalier Régional Universitaire de Nancy ( CHRU Nancy ), CLAD Ouest, Centre Hospitalier Universitaire [Rennes], Institut de Génétique et Développement de Rennes ( IGDR ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Centre National de la Recherche Scientifique ( CNRS ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Génétique des Anomalies du Développement ( GAD ), Université de Bourgogne ( UB ) -IFR100 - Structure fédérative de recherche Santé-STIC, Centre de Maladies Rares, Anomalies du Développement Nord de France-CH Arras - CHRU Lille, CHU - HÔTEL-DIEU Clermont-Ferrand, CHU Bordeaux [Bordeaux], CHU Rouen-Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Assistance publique - Hôpitaux de Paris (AP-HP)-Association française contre les myopathies ( AFM-Téléthon ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Service de Pédiatrie et de Génétique Médicale, Centre Hospitalier Régional Universitaire de Brest ( CHRU Brest ), Service de Génétique Clinique Chromosomique et Moléculaire, CHU Saint-Etienne-Hôpital Nord - Saint-Etienne, Unité de Cytogénétique et Génétique Médicale, Groupe Hospitalier du Havre-Hôpital Gustave Flaubert, Centre de recherche en neurosciences de Lyon ( CRNL ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] ( UJM ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -CHU Pontchaillou [Rennes]-Hôpital Sud, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Centre Hospitalier Régional Universitaire [Montpellier] ( CHRU Montpellier ) -Hôpital Arnaud de Villeneuve, CHU de Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] ( CHRU Montpellier ), Service de Cardiologie, Pôle DUNE, CHU de Poitiers, Centre d' investigation clinique-plurithématique du CHU de Poitiers, Génétique Médicale, CHU de Poitiers-Centre de Référence Anomalies du Développement Ouest, Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Sud - Paris 11 (UP11), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut de Médecine Aérospatiale du Service de Santé des Armées (IMASSA), Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Hôpital Bretonneau-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Association française contre les myopathies (AFM-Téléthon)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre de recherche en neurosciences de Lyon (CRNL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-CHU Pontchaillou [Rennes]-hôpital Sud, Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Centre de Référence Anomalies du Développement Ouest, université de Bourgogne, GAD, Centre Hospitalier Universitaire de Saint-Etienne (CHU de Saint-Etienne), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université d'Angers (UA), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)
Subjects: 0301 basic medicine, Central Nervous System, Male, update, Choanal atresia, [SDV.GEN] Life Sciences [q-bio]/Genetics, 030105 genetics & heredity, Gastroenterology, spectrum, Cohort Studies, CHARGE syndrome, Genotype, Medicine, Child, Genetics (clinical), Coloboma, Genetic disorder, Cranial Nerves, Hypoplasia, 3. Good health, DNA-Binding Proteins, Phenotype, Molecular Diagnostic Techniques, Child, Preschool, Female, France, medicine.symptom, Adult, medicine.medical_specialty, Adolescent, Anosmia, 03 medical and health sciences, Young Adult, Internal medicine, Genetics, otorhinolaryngologic diseases, Humans, Abnormalities, Multiple, Genetic Testing, Alleles, Genetic Association Studies, [SDV.GEN]Life Sciences [q-bio]/Genetics, business.industry, association, DNA Helicases, Infant, medicine.disease, mutations, diagnostic-criteria, 030104 developmental biology, Amino Acid Substitution, Atresia, chd7 gene, proposal, CHARGE Syndrome, business, [ SDV.GEN ] Life Sciences [q-bio]/Genetics
Abstract: International audience; CHARGE syndrome (CS) is a genetic disorder whose first description included Coloboma, Heart disease, Atresia of choanae, Retarded growth and development, Genital hypoplasia, and Ear anomalies and deafness, most often caused by a genetic mutation in the CHD7 gene. Two features were then added: semicircular canal anomalies and arhinencephaly/olfactory bulb agenesis, with classification of typical, partial, or atypical forms on the basis of major and minor clinical criteria. The detection rate of a pathogenic variant in the CHD7 gene varies from 67% to 90%. To try to have an overview of this heterogenous clinical condition and specify a genotype-phenotype relation, we conducted a national study of phenotype and genotype in 119 patients with CS. Selected clinical diagnostic criteria were from Verloes (2005), updated by Blake & Prasad (2006). Besides obtaining a detailed clinical description, when possible, patients underwent a full ophthalmologic examination, audiometry, temporal bone CT scan, gonadotropin analysis, and olfactory-bulb MRI. All patients underwent CHD7 sequencing and MLPA analysis. We found a pathogenic CHD7 variant in 83% of typical CS cases and 58% of atypical cases. Pathogenic variants in the CHD7 gene were classified by the expected impact on the protein. In all, 90% of patients had a typical form of CS and 10% an atypical form. The most frequent features were deafness/semicircular canal hypoplasia (94%), pituitary defect/hypogonadism (89%), external ear anomalies (87%), square-shaped face (81%), and arhinencephaly/anosmia (80%). Coloboma (73%), heart defects (65%), and choanal atresia (43%) were less frequent.
Published: 2017
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47. Intragenic FMR1 disease-causing variants: a significant mutational mechanism leading to Fragile-X syndrome

Author: Patrick Callier, Angélique Quartier, Matthieu Jung, Brigitte Gilbert-Dussardier, Vincent des Portes, Claire Feger, Bernard Jost, Bénédicte Gérard, Stéphanie Le Gras, Daphné Lehalle, Elsa Nourisson, Anne-Sophie Casteleyn, Claire Redin, Julien Thevenon, Anne-Laure Mosca-Boidron, Laurence Faivre, Hélène Poquet, Frédéric Huet, Paul Kuentz, Christel Thauvin-Robinet, Véronique Geoffroy, Jean-Louis Mandel, Massimiliano Rossi, Gaetan Lesca, Alice Masurel, Patrick Edery, Benoit Trojak, Salima El Chehadeh, Stéphanie Maury, Jean Muller, Amélie Piton, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Laboratoire de Génétique Moléculaire [CHRU Strasbourg], CHRU Strasbourg, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de cytogénétique (CHU de Dijon), Service de psychiatrie générale et addictologie [CHU de Dijon], French Ministry of Health Fondation Jerome Lejeune Agence de la Biomedecine, CREGEMES Agence Nationale de la Recherche MENESR et Fondation Recherche Medicale Regional Council of Burgundy, ANR-10-IDEX-0002,UNISTRA,UNISTRA(2010), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Lipides - Nutrition - Cancer [Dijon - U1231] ( LNC ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Institut de Génétique et de Biologie Moléculaire et Cellulaire ( IGBMC ), Université de Strasbourg ( UNISTRA ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), and ANR-10-IDEX-0002-02/10-IDEX-0002,UNISTRA,UNISTRA ( 2010 )
Subjects: Male, 0301 basic medicine, medicine.medical_specialty, congenital, hereditary, and neonatal diseases and abnormalities, diagnosis, RNA Splicing, Biology, medicine.disease_cause, Polymorphism, Single Nucleotide, Article, Fragile X Mental Retardation Protein, 03 medical and health sciences, Exon, Genetic linkage, placebo-controlled trial, [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology, Molecular genetics, Genetics, medicine, Humans, gene, Genetics (clinical), Mutation, intron 10, Siblings, Middle Aged, medicine.disease, FMR1, Human genetics, 3. Good health, Fragile X syndrome, developmental delay, of-the-literature, 030104 developmental biology, intellectual disability, Fragile X Syndrome, mental-retardation, Medical genetics, Female, point mutation, double-blind, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; Fragile-X syndrome (FXS) is a frequent genetic form of intellectual disability (ID). The main recurrent mutagenic mechanism causing FXS is the expansion of a CGG repeat sequence in the 5'-UTR of the FMR1 gene, therefore, routinely tested in ID patients. We report here three FMR1 intragenic pathogenic variants not affecting this sequence, identified using high-throughput sequencing (HTS): a previously reported hemizygous deletion encompassing the last exon of FMR1, too small to be detected by array-CGH and inducing decreased expression of a truncated form of FMRP protein, in three brothers with ID (family 1) and two splice variants in boys with sporadic ID: a de novo variant c.990+1G > A (family 2) and a maternally inherited c.420-8A > G variant (family 3). After clinical reevaluation, the five patients presented features consistent with FXS (mean Hagerman's scores=15). We conducted a systematic review of all rare non-synonymous variants previously reported in FMR1 in ID patients and showed that six of them are convincing pathogenic variants. This study suggests that intragenic FMR1 variants, although much less frequent than CGG expansions, are a significant mutational mechanism leading to FXS and demonstrates the interest of HTS approaches to detect them in ID patients with a negative standard work-up.
Published: 2017
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48. Efficient strategy for the molecular diagnosis of intellectual disability using targeted high-throughput sequencing

Author: Estelle Colin, Christel Thauvin-Robinet, Bernard Jost, Hélène Dollfus, Marie-Ange Delrue, Dominique Bonneau, Marjolaine Willems, Christine Francannet, Claire Feger, Michèle Mathieu-Dramard, Patrick Edery, Martine Doco-Fenzy, Laurence Olivier-Faivre, Véronique Geoffroy, Jean-Louis Mandel, Muriel Philipps, Serge Vicaire, Bérénice Doray, Alice Goldenberg, Magalie Barth, Julien Thevenon, Julia Lauer, Didier Lacombe, Gaetan Lesca, David Geneviève, Angélique Quartier, Dominique Martin-Coignard, Yvan Herenger, Serge Lumbroso, Salima El-Chehadeh, Bénédicte Gérard, Mélanie Fradin, Gilles Morin, Jean Muller, Yves Alembik, Sylvie Sukno, Amélie Piton, Nicolas Haumesser, Claire Redin, Bertrand Isidor, Elisabeth Flori, Valérie Drouin-Garraud, Pierre Sarda, Alice Masurel-Paulet, Michael Dumas, Stéphanie Le Gras, and Anne Polge
Subjects: Adult, Male, Adolescent, DNA Mutational Analysis, autism, Biology, DNA sequencing, Young Adult, Intellectual disability, Genetics, medicine, Humans, Child, Genetics (clinical), ATRX, causative, Genetic heterogeneity, Infant, Newborn, high-throughput sequencing, High-Throughput Nucleotide Sequencing, Infant, Sequence Analysis, DNA, Molecular diagnostics, medicine.disease, FMR1, Molecular Diagnostic Techniques, intellectual disability, Child, Preschool, Autism, Cognitive and Behavioural Genetics, Female, CUL4B, mutation
Abstract: Background Intellectual disability (ID) is characterised by an extreme genetic heterogeneity. Several hundred genes have been associated to monogenic forms of ID, considerably complicating molecular diagnostics. Trio-exome sequencing was recently proposed as a diagnostic approach, yet remains costly for a general implementation. Methods We report the alternative strategy of targeted high-throughput sequencing of 217 genes in which mutations had been reported in patients with ID or autism as the major clinical concern. We analysed 106 patients with ID of unknown aetiology following array-CGH analysis and other genetic investigations. Ninety per cent of these patients were males, and 75% sporadic cases. Results We identified 26 causative mutations: 16 in X-linked genes (ATRX, CUL4B, DMD, FMR1, HCFC1, IL1RAPL1, IQSEC2, KDM5C, MAOA, MECP2, SLC9A6, SLC16A2, PHF8) and 10 de novo in autosomal-dominant genes (DYRK1A, GRIN1, MED13L, TCF4, RAI1, SHANK3, SLC2A1, SYNGAP1). We also detected four possibly causative mutations (eg, in NLGN3) requiring further investigations. We present detailed reasoning for assigning causality for each mutation, and associated patients’ clinical information. Some genes were hit more than once in our cohort, suggesting they correspond to more frequent ID-associated conditions (KDM5C, MECP2, DYRK1A, TCF4). We highlight some unexpected genotype to phenotype correlations, with causative mutations being identified in genes associated to defined syndromes in patients deviating from the classic phenotype (DMD, TCF4, MECP2). We also bring additional supportive (HCFC1, MED13L) or unsupportive (SHROOM4, SRPX2) evidences for the implication of previous candidate genes or mutations in cognitive disorders. Conclusions With a diagnostic yield of 25% targeted sequencing appears relevant as a first intention test for the diagnosis of ID, but importantly will also contribute to a better understanding regarding the specific contribution of the many genes implicated in ID and autism.
Published: 2014

49. Congenital neutropenia with retinopathy, a new phenotype without intellectual deficiency or obesity secondary toVPS13Bmutations

Author: Julien Thevenon, Judith St-Onge, Bernard Aral, Patrick Callier, Salima El Chehadeh, Pierre Sarda, Christian P. Hamel, Virginie Carmignac, Frédéric Huet, Nathalie Droin, Lucie Gueneau, Laurence Duplomb, Christel Thauvin-Robinet, Laurence Faivre, and Nadège Gigot
Subjects: Adult, Pathology, medicine.medical_specialty, Microcephaly, Neutropenia, DNA Mutational Analysis, Vesicular Transport Proteins, medicine.disease_cause, Retinal Diseases, Intellectual Disability, Gene Order, Genetics, medicine, Congenital Bone Marrow Failure Syndromes, Humans, Obesity, Congenital Neutropenia, Genetics (clinical), Mutation, Cohen syndrome, business.industry, Facies, Syndrome, medicine.disease, Phenotype, Pedigree, VPS13B, Female, business, Retinopathy
Abstract: Over one hundred VPS13B mutations are reported in Cohen syndrome (CS). Most cases exhibit a homogeneous phenotype that includes intellectual deficiency (ID), microcephaly, facial dysmorphism, slender extremities, truncal obesity, progressive chorioretinal dystrophy, and neutropenia. We report on a patient carrying two VPS13B splicing mutations with an atypical phenotype that included microcephaly, retinopathy, and congenital neutropenia, but neither obesity nor ID. RNA analysis of the IVS34+2T_+3AinsT mutation did not reveal any abnormal splice fragments but mRNA quantification showed a significant decrease in VPS13B expression. RNA sequencing analysis up- and downstream from the IVS57+2T>C mutation showed abnormal splice isoforms. In contrast to patients with typical CS, who express only abnormal VPS13B mRNA and truncated protein, a dose effect of residual normal VPS13B protein possibly explains the incomplete phenotype in the patient. This observation emphasizes that VPS13B analysis should be performed in cases of congenital neutropenia associated with retinopathy, even in the absence of ID, therefore extending the VPS13B phenotype spectrum. © 2013 Wiley Periodicals, Inc.
Published: 2013
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50. Development of primary early-onset colorectal cancers due to biallelic mutations of the FANCD1/BRCA2 gene

Author: Charles Coutant, Laurent Arnould, Christophe Philippe, Patrick Callier, Pierre Fumoleau, Myriam Bronner, Emmanuelle Ferrant, Sarab Lizard, Amandine Baurand, Jean-Louis Jouve, Laurence Faivre, Carole Chery, Gérard Couillault, Alexandra Delignette, Catherine Loustalot, Caroline Chapusot, Côme Lepage, Thierry Frebourg, Emilie Degrolard-Courcet, Laurent Martin, Francine Mugneret, Marie-Martine Padeano, Salima El Chehadeh, Séverine Guiu, Philippe Jonveaux, Fanny Coron, Joanna Sokolowska, Cyril Hatem, Service de Pathologie [CHU de Dijon], Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Nutrition-Génétique et Exposition aux Risques Environnementaux (NGERE), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Service de Génétique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Service de chirurgie [Centre Georges-François Leclerc], Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER-UNICANCER, Département d'oncologie médicale [Centre Georges-François Leclerc], Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Service d'Hépato-Gastro-Entérologie (CHU de Dijon), Polyclinique du Parc - Clinique Drevon [Dijon], Service d'Hématologie Clinique (CHU de Dijon), Service de pédiatrie (CHU de Dijon), Service de radiologie [Centre Georges-François Leclerc], Département de Biologie et pathologie des tumeurs [Centre Georges-François Leclerc], UNICANCER, Laboratoire de cytogénétique (CHU de Dijon), Génétique du cancer et des maladies neuropsychiatriques (GMFC), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de génétique [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)
Subjects: Adult, Biallelic Mutation, RNA Splicing, [SDV]Life Sciences [q-bio], DNA Mutational Analysis, Biology, medicine.disease_cause, Article, Frameshift mutation, Genetics, medicine, Humans, Missense mutation, Age of Onset, Gene, Alleles, Genetics (clinical), BRCA2 Protein, Mutation, Point mutation, Computational Biology, Chromosome Breakage, Pedigree, 3. Good health, Amino Acid Substitution, Female, RNA Splice Sites, Chromosome breakage, Colorectal Neoplasms
Abstract: International audience; Fanconi anaemia (FA) is characterized by progressive bone marrow failure, congenital anomalies, and predisposition to malignancy. In a minority of cases, FA results from biallelic FANCD1/BRCA2 mutations that are associated with early-onset leukaemia and solid tumours. Here, we describe the clinical and molecular features of a remarkable family presenting with multiple primary colorectal cancers (CRCs) without detectable mutations in genes involved in the Mendelian predisposition to CRCs. We unexpectedly identified, despite the absence of clinical cardinal features of FA, a biallelic mutation of the FANCD1/BRCA2 corresponding to a frameshift alteration (c.1845_1846delCT, p.Asn615Lysfs*6) and a missense mutation (c.7802A>G, p.Tyr2601Cys). The diagnosis of FA was confirmed by the chromosomal analysis of lymphocytes. Reverse transcriptase (RT)-PCR analysis revealed that the c.7802A>G BRCA2 variation was in fact a splicing mutation that creates an aberrant splicing donor site and results partly into an aberrant transcript encoding a truncated protein (p.Tyr2601Trpfs*46). The atypical FA phenotype observed within this family was probably explained by the residual amount of BRCA2 with the point mutation c.7802A>G in the patients harbouring the biallelic FANCD1/BRCA2 mutations. Although this report is based in a single family, it suggests that CRCs may be part of the tumour spectrum associated with FANCD1/BRCA2 biallelic mutations and that the presence of such mutations should be considered in families with CRCs, even in the absence of cardinal features of FA.
Published: 2013
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