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1. Phenotypic characterization of seven individuals with <scp>Marbach–Schaaf</scp> neurodevelopmental syndrome

Author: Felix Marbach, Beata S. Lipska‐Ziętkiewicz, Agata Knurowska, Vincent Michaud, Henri Margot, James Lespinasse, Frédéric Tran Mau Them, Christine Coubes, Joohyun Park, Sarah Grosch, Cristiana Roggia, Ute Grasshoff, Louisa Kalsner, Anne‐Sophie Denommé‐Pichon, Alexandra Afenjar, Bénédicte Héron, Boris Keren, Pilar Caro, Christian P. Schaaf, Heidelberg University, University of Gdańsk (UG), Medical University of Gdańsk, 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), CHU Bordeaux [Bordeaux], Centre Hospitalier Métropole Savoie [Chambéry], 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)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Unité fonctionnelle d' Innovation en Diagnostic Génomique des Maladies Rares (CHU Dijon) (UF6254), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), University of Tübingen, School of Medicine [University of Connecticut], University of Connecticut (UCONN), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Sorbonne Université (SU), CHU Pitié-Salpêtrière [AP-HP], Baylor College of Medicine (BCM), Baylor University, and Admin, Oskar
Subjects: Adult, Pain insensitivity, Autism Spectrum Disorder, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, Global developmental delay, [SDV.NEU.NB] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, [SDV.BDD.EO] Life Sciences [q-bio]/Development Biology/Embryology and Organogenesis, Syndrome, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Cohort Studies, [SDV.BDD.EO]Life Sciences [q-bio]/Development Biology/Embryology and Organogenesis, Phenotype, Neurodevelopmental disorder, PRKAR1B, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Neurodevelopmental Disorders, Genetics, Protein kinase a complex, Animals, Humans, Genetics (clinical)
Abstract: International audience; We present the phenotypes of seven previously unreported patients with Marbach-Schaaf neurodevelopmental syndrome, all carrying the same recurrent heterozygous missense variant c.1003C>T (p.Arg335Trp) in PRKAR1B. Clinical features of this cohort include global developmental delay and reduced sensitivity to pain, as well as behavioral anomalies. Only one of the seven patients reported here was formally diagnosed with autism spectrum disorder (ASD), while ASD-like features were described in others, overall indicating a lower prevalence of ASD in Marbach-Schaaf neurodevelopmental syndrome than previously assumed. The clinical spectrum of the current cohort is similar to that reported in the initial publication, delineating a complex developmental disorder with behavioral and neurologic features. PRKAR1B encodes the regulatory subunit R1beta of the protein kinase A complex (PKA), and is expressed in the adult and embryonal central nervous system in humans. PKA is crucial to a plethora of cellular signaling pathways, and its composition of different regulatory and catalytic subunits is cell-type specific. We discuss potential molecular disease mechanisms underlying the patients' phenotypes with respect to the different known functions of PKA in neurons, and the phenotypes of existing R1beta-deficient animal models.
Published: 2022

2. 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, Antonio Vitobello, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), FHU TRANSLAD (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Equipe GAD (LNC - U1231), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, CHU Dijon, Centre hospitalier universitaire de Nantes (CHU Nantes), Nantes Université (Nantes Univ), Institut du Thorax [Nantes], Département de génétique [CHU Rouen] (Centre Normandie de Génomique et de Médecine Personnalisée), CHU Rouen, Normandie Université (NU)-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), CHU Pontchaillou [Rennes], Centre de référence Maladies Rares CLAD-Ouest [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 ), Hémostase et Remodelage Vasculaire Post-Ischémie (HERVI - EA 3801), Université de Reims Champagne-Ardenne (URCA), Hospices Civils de Lyon (HCL), Génétique, génomique fonctionnelle et biotechnologies (UMR 1078) (GGB), EFS-Université de Brest (UBO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO), Centre National de Recherche en Génomique Humaine (CNRGH), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratory of Excellence GENMED [Paris] (Medical Genomics), This work was supported by grants from Dijon University Hospital, the ISITE-BFC (PIA ANR), the European Union through the FEDER programs (PERSONALISE), and the Burgundy-Franche Comté regional council (INTEGRA). The sequencing performed at the CNRGH was supported by the France Génomique National infrastructure, funded as part of the 'Investissements d’Avenir' program managed by the Agence Nationale pour la Recherche (contract ANR-10-INBS-09)., and ANR-10-INBS-0009,France-Génomique,Organisation et montée en puissance d'une Infrastructure Nationale de Génomique(2010)
Subjects: [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Cell Biology, Developmental Biology
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

3. Retrotransposon insertion as a novel mutational cause of spinal muscular atrophy

Author: Myriam Vezain, Christel Thauvin-Robinet, Yoann Vial, Sophie Coutant, Séverine Drunat, Jon Andoni Urtizberea, Anne Rolland, Agnès Jacquin-Piques, Séverine Fehrenbach, Gaël Nicolas, François Lecoquierre, Pascale Saugier-Veber, Julien, Sabine, Département de génétique [CHU Rouen] (Centre Normandie de Génomique et de Médecine Personnalisée), CHU Rouen, Normandie Université (NU)-Normandie Université (NU), Cancer and Brain Genomics (CBG), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institute for Research and Innovation in Biomedicine (IRIB), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-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), 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)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), FHU TRANSLAD (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), 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), Neuroprotection du Cerveau en Développement / Promoting Research Oriented Towards Early Cns Therapies (PROTECT), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut de Myologie, 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)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre hospitalier de Valence, Service de Neurologie générale, vasculaire et dégénérative (CHU de Dijon), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), and Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: [SDV.MHEP.EM] Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, [SDV.AEN] Life Sciences [q-bio]/Food and Nutrition, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, Genetics, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.MHEP.EM]Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition, Genetics (clinical)
Abstract: Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder resulting from biallelic alterations of the SMN1 gene: deletion, gene conversion or, in rare cases, intragenic variants. The disease severity is mainly influenced by the copy number of SMN2, a nearly identical gene, which produces only low amounts of full-length (FL) mRNA. Here we describe the first example of retrotransposon insertion as a pathogenic SMN1 mutational event. The 50-year-old patient is clinically affected by SMA type III with a diagnostic odyssey spanning nearly 30 years. Despite a mild disease course, he carries a single SMN2 copy. Using Exome Sequencing and Sanger sequencing, we characterized a SVA-F retrotransposon inserted in SMN1 intron 7. Using RT-PCR and RNASeq experiments on lymphoblastoid cell lines, we documented the dramatic decrease of FL transcript production in the patient compared to subjects with the same SMN1 and SMN2 copy number, thus validating the pathogenicity of this SVA insertion. We characterized the mutant FL-SMN1-SVA transcript and showed that it is subject to degradation by nonsense-mediated mRNA decay. The stability of the SMN-SVA protein may explain the mild course of the disease. This observation exemplifies the role of retrotransposons in human genetic disorders.
Published: 2022

4. Understanding the new BRD4-related syndrome: Clinical and genomic delineation with an international cohort study

Author: Guillaume Jouret, Solveig Heide, Arthur Sorlin, Laurence Faivre, Sandra Chantot‐Bastaraud, Claire Beneteau, Marie Denis‐Musquer, Peter D. Turnpenny, Charles Coutton, Gaëlle Vieville, Julien Thevenon, Austin Larson, Florence Petit, Elise Boudry, Thomas Smol, Bruno Delobel, Bénédicte Duban‐Bedu, Chiara Fallerini, Francesca Mari, Caterina Lo Rizzo, Alessandra Renieri, Jean‐Hubert Caberg, Anne‐Sophie Denommé‐Pichon, Frédéric Tran Mau‐Them, Isabelle Maystadt, Thomas Courtin, Boris Keren, Linda Mouthon, Perrine Charles, Silvestre Cuinat, Bertrand Isidor, Philippe Theis, Christian Müller, Marizela Kulisic, Seval Türkmen, Daniel Stieber, Dominique Bourgeois, Emmanuel Scalais, Barbara Klink, Couvet, Sandrine, Laboratoire National de Santé [Luxembourg] (LNS), Service de génétique, cytogénétique, embryologie [CHU Pitié-Salpétrière], Université Pierre et Marie Curie - Paris 6 (UPMC)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), 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)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), 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), UF de Génétique chromosomique [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 médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), Centre hospitalier universitaire de Nantes (CHU Nantes), Royal Devon and Exeter Hospital [Exeter, UK] (RDEH), Laboratoire de Génétique Chromosomique [CHU de Grenoble], CHU Grenoble, Children’s Hospital Colorado, University of Colorado Anschutz [Aurora], Clinique de Génétique médicale Guy Fontaine [CHRU LIlle], Institut de Génétique Médicale [CHRU Lille], Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Service de Génétique Médicale [Lille], Institut de génétique médicale-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Università degli Studi di Siena = University of Siena (UNISI), Azienda Ospedaliera Universitaria Senese, Centre Hospitalier Universitaire de Liège (CHU-Liège), Unité fonctionnelle d' Innovation en Diagnostic Génomique des Maladies Rares (CHU Dijon) (UF6254), Centre de Génétique Humaine [Charleroi, Belgium] (Institut de Pathologie et de Génétique), Institut de Pathologie et de Génétique, Charleroi, Service de Génétique médicale [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], and Centre Hospitalier de Luxembourg [Luxembourg] (CHL)
Subjects: MESH: Mutation, [SDV]Life Sciences [q-bio], Cell Cycle Proteins, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, MESH: Phenotype, NIPBL, BRD4-related syndrome, cohesinopathy, MESH: Cell Cycle Proteins, MESH: Pregnancy, Pregnancy, MESH: Child, De Lange Syndrome, Genetics, Humans, Child, Genetics (clinical), MESH: Humans, MESH: Genomics, Nuclear Proteins, MESH: Transcription Factors, Genomics, Cornelia de Lange syndrome, [SDV] Life Sciences [q-bio], Phenotype, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Mutation, BRD4, Female, MESH: Female, MESH: Nuclear Proteins, MESH: De Lange Syndrome, Transcription Factors
Abstract: International audience; BRD4 is part of a multiprotein complex involved in loading the cohesin complex onto DNA, a fundamental process required for cohesin-mediated loop extrusion and formation of Topologically Associating Domains. Pathogenic variations in this complex have been associated with a growing number of syndromes, collectively known as cohesinopathies, the most classic being Cornelia de Lange syndrome. However, no cohort study has been conducted to delineate the clinical and molecular spectrum of BRD4-related disorder. We formed an international collaborative study, and collected 14 new patients, including two fetuses. We performed phenotype and genotype analysis, integrated prenatal findings from fetopathological examinations, phenotypes of pediatric patients and adults. We report the first cohort of patients with BRD4-related disorder and delineate the dysmorphic features at different ages. This work extends the phenotypic spectrum of cohesinopathies and characterize a new clinically relevant and recognizable pattern, distinguishable from the other cohesinopathies.
Published: 2022

5. Exome sequencing allows detection of relevant pharmacogenetic variants in epileptic patients

Author: Simon Verdez, Quentin Thomas, Philippine Garret, Céline Verstuyft, Emilie Tisserant, Antonio Vitobello, Frédéric Tran Mau-Them, Christophe Philippe, Marc Bardou, Maxime Luu, Abderrahmane Bourredjem, Patrick Callier, Christel Thauvin-Robinet, Nicolas Picard, Laurence Faivre, Yannis Duffourd, 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)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), CHU Dijon, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Service de Neurologie générale, vasculaire et dégénérative (CHU de Dijon), Université Bourgogne Franche-Comté [COMUE] (UBFC), Laboratoire CERBA [Saint Ouen l'Aumône], 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), Centre de recherche en épidémiologie et santé des populations (CESP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Paul Brousse-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay, FHU TRANSLAD (CHU de Dijon), Centre d'Investigation Clinique 1432 (Dijon) - Module Plurithématique : Périnatalité Cancérologie Handicap et Ophtalmologie (CIC-P803), Université de Bourgogne (UB)-Direction Générale de l'Organisation des Soins (DGOS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Génétique Chromosomique et Moléculaire [CHU Dijon], Centre de référence des maladies rares des déficiences intellectuelles de causes rares (CHU Dijon) (CRMR des déficiences intellectuelles de causes rares), Ciblage individuel et prévention des risques de traitements immunosupresseurs et de la transplantation (IPPRITT), CHU Limoges-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), and Duffourd, Yannis
Subjects: Pharmacology, [SDV] Life Sciences [q-bio], Epilepsy, Pharmacogenomic Variants, [SDV]Life Sciences [q-bio], Phenytoin, Genetics, Molecular Medicine, Humans, Exome, Retrospective Studies
Abstract: International audience; Beyond the identification of causal genetic variants in the diagnosis of Mendelian disorders, exome sequencing can detect numerous variants with potential relevance for clinical care. Clinical interventions can thus be conducted to improve future health outcomes for patients and their at-risk relatives, such as predicting late-onset genetic disorders accessible to prevention, treatment or identifying differential drug efficacy and safety. To evaluate the interest of such pharmacogenetic information, we designed an "in house" pipeline to determine the status of 122 PharmGKB (Pharmacogenomics Knowledgebase) variant-drug combinations in 31 genes. This pipeline was applied to a cohort of 90 epileptic patients who had previously an exome sequencing (ES) analysis, to determine the frequency of pharmacogenetic variants. We performed a retrospective analysis of drug plasma concentrations and treatment efficacy in patients bearing at least one relevant PharmGKB variant. For PharmGKB level 1A variants, CYP2C9 status for phenytoin prescription was the only relevant information. Nineteen patients were treated with phenytoin, among phenytointreated patients, none were poor metabolizers and four were intermediate metabolizers. While being treated with a standard protocol (10-23 mg/kg/30 min loading dose followed by 5 mg/kg/8 h maintenance dose), all identified intermediate metabolizers had toxic plasma concentrations (20 mg/L). In epileptic patients, pangenomic sequencing can provide information about common pharmacogenetic variants likely to be useful to guide therapeutic drug monitoring, and in the case of phenytoin, to prevent clinical toxicity caused by high plasma levels.
Published: 2021

6. How to make a tongue: Cellular and molecular regulation of muscle and connective tissue formation during mammalian tongue development

Author: Hadeel Adel Al-Lami, Karen J. Liu, Sachiko Iseki, Martyn T. Cobourne, Guilherme M. Xavier, Christel Thauvin-Robinet, Anahid A. Birjandi, Department of Craniofacial Development & Orthodontics, London Dental Institute (LDI), King‘s College London-King‘s College London, Section of Molecular Craniofacial Embryology (Graduate School of Tokyo Medical and Dental University), Department of Orthodontics (University of Baghdad College of Dentistry), University of Baghdad, 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), 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), 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, Organogenesis, Hedgehog signaling, [SDV.BC]Life Sciences [q-bio]/Cellular Biology, Biology, Bifid tongue, Mesoderm, Wnt, 03 medical and health sciences, 0302 clinical medicine, Cranial neural crest, Tongue, Macroglossia, medicine, Animals, Humans, TGF-beta, Hedgehog, Mammals, Aglossia, Muscles, Myogenesis, Gene Expression Regulation, Developmental, Cell Biology, Anatomy, medicine.disease, 030104 developmental biology, medicine.anatomical_structure, Connective Tissue, Neural Crest, Embryology, Gross anatomy, medicine.symptom, 030217 neurology & neurosurgery, Signal Transduction, Developmental Biology
Abstract: IF 6.614 (2016); International audience; The vertebrate tongue is a complex muscular organ situated in the oral cavity and involved in multiple functions including mastication, taste sensation, articulation and the maintenance of oral health. Although the gross embryological contributions to tongue formation have been known for many years, it is only relatively recently that the molecular pathways regulating these processes have begun to be discovered. In particular, there is now evidence that the Hedgehog, TGF-Beta, Wnt and Notch signaling pathways all play an important role in mediating appropriate signaling interactions between the epithelial, cranial neural crest and mesodermal cell populations that are required to form the tongue. In humans, a number of congenital abnormalities that affect gross morphology of the tongue have also been described, occurring in isolation or as part of a developmental syndrome, which can greatly impact on the health and well-being of affected individuals. These anomalies can range from an absence of tongue formation (aglossia) through to diminutive (microglossia), enlarged (macroglossia) or bifid tongue. Here, we present an overview of the gross anatomy and embryology of mammalian tongue development, focusing on the molecular processes underlying formation of the musculature and connective tissues within this organ. We also survey the clinical presentation of tongue anomalies seen in human populations, whilst considering their developmental and genetic etiology.
Published: 2019

7. NR2F1 regulates regional progenitor dynamics in the mouse neocortex and cortical gyrification in BBSOAS patients

Author: Laurence Perrin, Silvia Cappello, Francesco Neri, Arthur Sorlin, Philippe Khau Van Kien, Ludovico D'Incerti, Françoise Devillard, Rossella Di Giaimo, Paul Kuentz, Agnès Loubat, Marjolaine Willems, Laurence Faivre, Frédéric Tran Mau-Them, Salvatore Oliviero, Michèle Studer, Anna Lisa Romano, Christophe Philippe, Michele Bertacchi, Carolina Frassoni, Aurore Garde, Institut de Biologie Valrose (IBV), 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)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), 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), Unité fonctionnelle d' Innovation en Diagnostic Génomique des Maladies Rares (CHU Dijon) (UF6254), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Hôpital Universitaire Carémeau [Nîmes] (CHU Nîmes), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Hôpital Robert Debré Paris, Hôpital Robert Debré, Département de génétique et procréation, Université Joseph Fourier - Grenoble 1 (UJF)-Hôpital Couple-Enfant, 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), Génétique biologique histologie [CHRU de Besançon], Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Leibniz Association, Université de Naples, Max Planck Institute of Psychiatry, Max-Planck-Gesellschaft, Fondazione IRCCS Istituto Neurologico 'Carlo Besta', Bertacchi, Michele, Romano, Anna Lisa, Loubat, Agnè, Tran Mau-Them, Frederic, Willems, Marjolaine, Faivre, Laurence, Khau van Kien, Philippe, Perrin, Laurence, Devillard, Françoise, Sorlin, Arthur, Kuentz, Paul, Philippe, Christophe, Garde, Aurore, Neri, Francesco, Di Giaimo, Rossella, Oliviero, Salvatore, Cappello, Silvia, D'Incerti, Ludovico, Frassoni, Carolina, and Studer, Michèle
Subjects: cell cycle dynamics, PAX6 Transcription Factor, [SDV]Life Sciences [q-bio], cell cycle dynamic, Neocortex, Biology, Regenerative Medicine, Article, General Biochemistry, Genetics and Molecular Biology, Mice, 03 medical and health sciences, 0302 clinical medicine, Neurodevelopmental disorder, Neural Stem Cells, Optic Atrophies, Hereditary, Parietal Lobe, Cortex (anatomy), BBSOAS, medicine, Animals, Humans, Molecular Biology, Gyrification, 030304 developmental biology, 0303 health sciences, COUP Transcription Factor I, General Immunology and Microbiology, General Neuroscience, Neurogenesis, Articles, Human brain, NR2F1/COUP-TFI, cortical folding, medicine.disease, Disease Models, Animal, neurodevelopmental disease, medicine.anatomical_structure, NR2F1/COUP‐TFI, Occipital Lobe, PAX6, Haploinsufficiency, Development & Differentiation, Neuroscience, 030217 neurology & neurosurgery
Abstract: The relationships between impaired cortical development and consequent malformations in neurodevelopmental disorders, as well as the genes implicated in these processes, are not fully elucidated to date. In this study, we report six novel cases of patients affected by BBSOAS (Boonstra‐Bosch‐Schaff optic atrophy syndrome), a newly emerging rare neurodevelopmental disorder, caused by loss‐of‐function mutations of the transcriptional regulator NR2F1. Young patients with NR2F1 haploinsufficiency display mild to moderate intellectual disability and show reproducible polymicrogyria‐like brain malformations in the parietal and occipital cortex. Using a recently established BBSOAS mouse model, we found that Nr2f1 regionally controls long‐term self‐renewal of neural progenitor cells via modulation of cell cycle genes and key cortical development master genes, such as Pax6. In the human fetal cortex, distinct NR2F1 expression levels encompass gyri and sulci and correlate with local degrees of neurogenic activity. In addition, reduced NR2F1 levels in cerebral organoids affect neurogenesis and PAX6 expression. We propose NR2F1 as an area‐specific regulator of mouse and human brain morphology and a novel causative gene of abnormal gyrification., Reduced levels of the neuronal differentiation factor NR2F1/COUP‐TFI impairs brain cortex folding in humans, and disrupts regional neural progenitor dynamics in the neocortex of a BBSOAS disease mouse model.
Published: 2020

8. De novo SMARCA2 variants clustered outside the helicase domain cause a new recognizable syndrome with intellectual disability and blepharophimosis distinct from Nicolaides-Baraitser syndrome

Author: Gerarda Cappuccio, Camille Sayou, Pauline Le Tanno, Emilie Tisserant, Ange-Line Bruel, Sara El Kennani, Joaquim Sá, Karen J. Low, Cristina Dias, Markéta Havlovicová, Miroslava Hančárová, Evan E. Eichler, Françoise Devillard, Sébastien Moutton, Julien Van-Gils, Christèle Dubourg, Sylvie Odent, Bénédicte Gerard, Amélie Piton, Toshiyuki Yamamoto, Nobuhiko Okamoto, Helen Firth, Kay Metcalfe, Anna Moh, Kimberly A. Chapman, Erfan Aref-Eshghi, Jennifer Kerkhof, Annalaura Torella, Vincenzo Nigro, Laurence Perrin, Juliette Piard, Gwenaël Le Guyader, Thibaud Jouan, Christel Thauvin-Robinet, Yannis Duffourd, Jaya K. George-Abraham, Catherine A. Buchanan, Denise Williams, Usha Kini, Kate Wilson, Nicola Brunetti-Pierri, Giorgio Casari, Michele Pinelli, Francesco Musacchia, Margherita Mutarelli, Diego Carrella, Giuseppina Vitiello, Valeria Capra, Giancarlo Parenti, Vincenzo Leuzzi, Angelo Selicorni, Silvia Maitz, Sandro Banfi, Marcella Zollino, Mario Montomoli, Donatelli Milani, Corrado Romano, Albina Tummolo, Daniele De Brasi, Antonietta Coppola, Claudia Santoro, Angela Peron, Chiara Pantaleoni, Raffaele Castello, Stefano D’Arrigo, Sérgio B. Sousa, Raoul C.M. Hennekam, Bekim Sadikovic, Julien Thevenon, Jérôme Govin, Antonio Vitobello, Università degli studi di Napoli Federico II, 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), 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), University Hospital Motol [Prague], University of Washington [Seattle], Centre Hospitalier Universitaire [Grenoble] (CHU), Université de Bordeaux (UB), 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), 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), London Health Sciences Center (LHSC), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC), 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), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Academic Medical Center - Academisch Medisch Centrum [Amsterdam] (AMC), University of Amsterdam [Amsterdam] (UvA), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), GSP15001, Fondazione Telethon, 209568/Z/17/Z, Wellcome Trust, Cappuccio, G., Sayou, C., Tanno, P. L., Tisserant, E., Bruel, A. -L., Kennani, S. E., Sa, J., Low, K. J., Dias, C., Havlovicova, M., Hancarova, M., Eichler, E. E., Devillard, F., Moutton, S., Van-Gils, J., Dubourg, C., Odent, S., Gerard, B., Piton, A., Yamamoto, T., Okamoto, N., Firth, H., Metcalfe, K., Moh, A., Chapman, K. A., Aref-Eshghi, E., Kerkhof, J., Torella, A., Nigro, V., Perrin, L., Piard, J., Le Guyader, G., Jouan, T., Thauvin-Robinet, C., Duffourd, Y., George-Abraham, J. K., Buchanan, C. A., Williams, D., Kini, U., Wilson, K., Brunetti-Pierri, N., Casari, G., Pinelli, M., Musacchia, F., Mutarelli, M., Carrella, D., Vitiello, G., Capra, V., Parenti, G., Leuzzi, V., Selicorni, A., Maitz, S., Banfi, S., Zollino, M., Montomoli, M., Milani, D., Romano, C., Tummolo, A., De Brasi, D., Coppola, A., Santoro, C., Peron, A., Pantaleoni, C., Castello, R., D'Arrigo, S., Sousa, S. B., Hennekam, R. C. M., Sadikovic, B., Thevenon, J., Govin, J., Vitobello, A., University of Naples Federico II = Università degli studi di Napoli Federico II, 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 ), 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, General Paediatrics, APH - Quality of Care, and Brunetti-Pierri, Nicola
Subjects: Foot Deformities, Foot Deformities, Congenital, [SDV]Life Sciences [q-bio], Biology, Blepharophimosis, Settore MED/03 - GENETICA MEDICA, Hypotrichosis, Chromatin remodeling, 03 medical and health sciences, Congenital, 0302 clinical medicine, Neurodevelopmental disorder, Intellectual Disability, Intellectual disability, SMARCA2, medicine, Humans, Gene, Genetics (clinical), 030304 developmental biology, Genetics, 0303 health sciences, BIS, Facies, medicine.disease, Phenotype, neurodevelopmental disorder, Nicolaides–Baraitser syndrome, intellectual disability, DNA methylation, 030217 neurology & neurosurgery, Transcription Factors
Abstract: International audience; Purpose: Nontruncating variants in SMARCA2, encoding a catalytic subunit of SWI/SNF chromatin remodeling complex, cause Nicolaides-Baraitser syndrome (NCBRS), a condition with intellectual disability and multiple congenital anomalies. Other disorders due to SMARCA2 are unknown.Methods: By next-generation sequencing, we identified candidate variants in SMARCA2 in 20 individuals from 18 families with a syndromic neurodevelopmental disorder not consistent with NCBRS. To stratify variant interpretation, we functionally analyzed SMARCA2 variants in yeasts and performed transcriptomic and genome methylation analyses on blood leukocytes.Results: Of 20 individuals, 14 showed a recognizable phenotype with recurrent features including epicanthal folds, blepharophimosis, and downturned nasal tip along with variable degree of intellectual disability (or blepharophimosis intellectual disability syndrome [BIS]). In contrast to most NCBRS variants, all SMARCA2 variants associated with BIS are localized outside the helicase domains. Yeast phenotype assays differentiated NCBRS from non-NCBRS SMARCA2 variants. Transcriptomic and DNA methylation signatures differentiated NCBRS from BIS and those with nonspecific phenotype. In the remaining six individuals with nonspecific dysmorphic features, clinical and molecular data did not permit variant reclassification.Conclusion: We identified a novel recognizable syndrome named BIS associated with clustered de novo SMARCA2 variants outside the helicase domains, phenotypically and molecularly distinct from NCBRS.
Published: 2020

9. TBL1XR1 mutations in Pierpont syndrome are not restricted to the recurrent p.Tyr446Cys mutation

Author: Julien Thevenon, David Geneviève, Laurence Faivre, C. F. Wells, Yannis Duffourd, camille lemattre, B. Vuadelle, Sophie Nambot, Marjolaine Willems, Paul Kuentz, Emmanuelle Haquet, Pierre Sarda, Ange-Line Bruel, Service de génétique médicale [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Arnaud de Villeneuve, 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, Service de génétique et procréation (Grenoble), Centre Hospitalier Universitaire [Grenoble] (CHU), Université Bourgogne Franche-Comté [COMUE] (UBFC), Orphanomix, 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), Unité fonctionnelle d' Innovation en Diagnostic Génomique des Maladies Rares (CHU Dijon) (UF6254), FHU TRANSLAD (CHU de Dijon), Lycée Philippe Lamour (Nîmes), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Laboratoire de Biologie Moléculaire ( CHRU Saint‐Jacques, Besançon), and Hôpital Saint-Jacques [CHRU de Besançon]
Subjects: Male, 0301 basic medicine, Adolescent, Genotype, Receptors, Cytoplasmic and Nuclear, Biology, 03 medical and health sciences, 0302 clinical medicine, PIERPONT SYNDROME, Genetics, Humans, TBL1XR1, Missense mutation, Abnormalities, Multiple, Recurrent mutation, Genetic Testing, Alleles, Genetics (clinical), Exome sequencing, Loss function, Ultrasonography, Comparative Genomic Hybridization, [SDV.GEN]Life Sciences [q-bio]/Genetics, Brain, Facies, Nuclear Proteins, Syndrome, Magnetic Resonance Imaging, Phenotype, 3. Good health, Repressor Proteins, 030104 developmental biology, Amino Acid Substitution, 030220 oncology & carcinogenesis, Mutation, Mutation (genetic algorithm), Pierpont syndrome
Abstract: IF 2.264; International audience; Pierpont syndrome is a rare and sporadic syndrome, including developmental delay, facial characteristics, and abnormal extremities. Recently, a recurrent de novo TBL1XR1 variant (c.1337A > G; p.Tyr446Cys) has been identified in eight patients by whole‐exome sequencing. A dominant‐negative effect of this mutation is strongly suspected, since patients with TBL1XR1 deletion and other variants predicting loss of function do not share the same phenotype. We report two patients with typical Pierpont‐like syndrome features. Exome sequencing allowed identifying a de novo heterozygous missense TBL1XR1 variant in both patients, different from those already reported: p.Cys325Tyr and p.Tyr446His. The localization of these mutations and clinical features of Pierpont‐like syndrome suggest that their functional consequences are comparable with the recurrent mutation previously described, and provided additional data to understand molecular mechanisms of TBL1XR1 anomalies.
Published: 2018

10. Mosaicism due to postzygotic mutations in women with focal dermal hypoplasia

Author: J. Küsel, Julien Thevenon, Emmanuelle Bourrat, Steffen Hörer, Rudolf Happle, Lisa Heinz, Pierre Vabres, Svenja Alter, Alrun Hotz, Andreas Zimmer, Judith Fischer, Fakultät für Biologie = Faculty of Biology [Freiburg], Albert-Ludwigs-Universität Freiburg, Center for Human Genetics Freiburg, Service de dermatologie [Paris], Université Paris Diderot - Paris 7 (UPD7)-Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de Dermatologie (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), 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), Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), FHU TRANSLAD (CHU de Dijon), University of Freiburg [Freiburg], Department of Dermatology, University Medical Center Freiburg, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP), 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 FHU TRANSLAD
Subjects: Adult, Zygote, DNA Mutational Analysis, Dermatology, Biology, Postzygotic mutation, medicine.disease_cause, PORCN, Young Adult, 030207 dermatology & venereal diseases, 03 medical and health sciences, 0302 clinical medicine, medicine, Humans, Missense mutation, Goltz syndrome, Skin, Genetics, Mutation, Mosaicism, Mouth Mucosa, Genetic disorder, High-Throughput Nucleotide Sequencing, Membrane Proteins, cutaneous mosaicism, Karyotype, medicine.disease, Focal dermal hypoplasia, 3. Good health, focal dermal hypoplasia, Female, Klinefelter syndrome, Acyltransferases, [SDV.MHEP.DERM]Life Sciences [q-bio]/Human health and pathology/Dermatology
Abstract: International audience; Focal dermal hypoplasia (FDH, Goltz syndrome, MIM: #305600) constitutes a rare multisystem genetic disorder of the skin, skeleton, teeth and eyes with considerable variation in the clinical features. FDH is transmitted as an X-linked dominant trait and is caused by mutations in PORCN. In males, hemizygous PORCN mutations are lethal in utero. Around 300 cases have been reported in the literature to date. About 10% of them are males presenting either Klinefelter syndrome (karyotype 47, XXY) or mosaicism of a postzygotic mutation. Here we describe four cases of women with typical features of FDH, in whom a PORCN mutation was found in DNA from affected cutaneous tissue but not in DNA from peripheral blood. This study suggests that mosaicism caused by a postzygotic mutation occurs more often than assumed to date in female patients with FDH. A negative analysis performed on peripheral blood DNA does not exclude the diagnosis of FDH and it is thereby of practical importance to analyse DNA from the affected skin in order to identify low level mosaicism and thus to improve diagnostic precision. In total, we found two missense variants, one novel indel and one novel splice site variant. Individuals harbouring postzygotic mosaicism run a risk of transmitting the disorder to their daughters, because the maternal mosaic could also affect the gonads. This article is protected by copyright. All rights reserved.
Published: 2018

11. 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

12. Associations between cognitive performance and the rehabilitation, medical care and social support provided to French children with Prader-Willi syndrome

Author: Natacha Lehman, Didier Lacombe, Delphine Héron, Frédérique Debomy, Sylvie Manouvrier, Frédéric Huet, Patrick Edery, Laurence Faivre, Sylvie Odent, Myriam Mikaty, Jennifer Gallard, Sophie Chancenotte, Sandrine Vinault, Maïté Tauber, David Geneviève, Coralie Rastel, Nicole Philip, Christine Binquet, Mathieu Bordes, Alain Verloes, Jamal Ghoumid, Elodie Gautier, Christel Thauvin-Robinet, Emilie Schmitt, Jenny Cornaton, Marie Bournez, Nolwenn Jean, Catherine Lejeune, Delphine Minot, Alice Masurel, Pierre-Henri Roux-Levy, 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), Hôpital d'Enfants [CHU Dijon], Hôpital du Bocage, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Centre d'Investigation Clinique 1432 (Dijon) - Epidemiologie Clinique/Essais Cliniques (CIC-EC), Université de Bourgogne (UB)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Bordeaux [Bordeaux], CHU Pontchaillou [Rennes], Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Assistance Publique - Hôpitaux de Marseille (APHM), Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL), AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre de Référence du Syndrome de Prader-Willi, CHU Toulouse [Toulouse], Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), FHU TRANSLAD (CHU de Dijon), CHU Dijon, Hôpital de la Timone [CHU - APHM] (TIMONE), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Pôle Enfants [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), and CCSD, Accord Elsevier
Subjects: Male, 0301 basic medicine, medicine.medical_treatment, Intellectual disability, MESH: Cognition, CBCL, 030105 genetics & heredity, Cognition, Multidisciplinary approach, MESH: Child, Medicine, Child, Genetics (clinical), Rehabilitation, MESH: Hormone Replacement Therapy, Neurological Rehabilitation, Neuropsychology, Wechsler Adult Intelligence Scale, General Medicine, 3. Good health, MESH: Young Adult, Child, Preschool, Education, Special, Female, France, Prader-Willi Syndrome, Occupational therapy, medicine.medical_specialty, Adolescent, Hormone Replacement Therapy, MESH: Social Support, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Young Adult, 03 medical and health sciences, Social support, MESH: Neurological Rehabilitation, Genetics, Humans, Psychiatry, MESH: Adolescent, MESH: Humans, business.industry, MESH: Child, Preschool, Social Support, medicine.disease, MESH: Male, MESH: France, Patient care management, 030104 developmental biology, MESH: Education, Special, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, MESH: Prader-Willi Syndrome, business, MESH: Female
Abstract: International audience; Prader-Willi syndrome (PWS) is a rare genetic neurodevelopmental disorder with a characteristic behavioural phenotype. A multidisciplinary approach to care is required to prevent multiple medical complications in individuals affected by PWS. The aim of this study was to describe the rehabilitation, medical care, educational and social support provided to school-aged French PWS patients with varying neuropsychological profiles. Data were obtained from a French multicentre study that included patients aged 4-20 years with diverse genetic syndromes. Nineteen PWS subjects with a mean age of 9.2 years were included. The mean full-scale intellectual quotient (IQ) was 58 (Wechsler scale). There were frequent dissociations between verbal and performance IQ that were not associated with a specific profile. We also observed lower autonomy and communication scores (5.3 years and 5.9 years equivalent, respectively, Vineland scale), the absence of hyperactivity (Conners scale), and the presence of behavioural abnormalities (CBCL scale). Multidisciplinary medical supervision was generally coordinated by the paediatric endocrinologist and did not always include follow-up with all of the recommended specialists, in particular with a paediatric psychiatrist. Analysis of multidisciplinary rehabilitation conducted in public and private-sector establishment revealed failings in psychological support, occupational therapy and dietary follow-up. Regarding education, most children younger than 10 years were in normal schools, while older individuals were often cared for in medico-social institutions. In conclusion, children and adolescents with PWS generally received appropriate care. Though there have been considerable improvements in the management of children with PWS, reference centres should continue reinforcing the coordination of multidisciplinary supervision.
Published: 2020

13. Phenotypic spectrum associated with SPECC1L pathogenic variants: new families and critical review of the nosology of Teebi, Opitz GBBB, and Baraitser-Winter syndromes

Author: Dominique Bonneau, Luis A Gonzalez-Nieto, Stine Leenskjold, Patrick Callier, Isabelle Thiffault, Katheryn Grand, Pauline Bogaard, Séverine Drunat, Elizabeth J. Bhoj, Hakon Hakonarson, Katherine T. Wild, Elaine H. Zackai, Elena Repnikova, Damien Haye, Irene K Nielsen, Mirena C Astiazaran, Irfan Saadi, Daphné Lehalle, Ida Charlotte Bay Lund, Shivarajan M. Amudhavalli, Annick Toutain, Alain Verloes, Ana Sofia Carvalho, Dong Li, Carol J Saunders, Yoann Vial, Kadri Karaer, The Center for Applied Genomics [Philadelphia, PA, USA], Children’s Hospital of Philadelphia (CHOP ), Division of Human Genetics [Philadelphia, PA, USA], 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), Service de génétique [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, 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), University of Coimbra [Portugal] (UC), 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, Oak Ridge National Laboratory [Oak Ridge] (ORNL), UT-Battelle, LLC, The Center for Applied Genomics, Neuroprotection du Cerveau en Développement / Promoting Research Oriented Towards Early Cns Therapies (PROTECT), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Division of Human Genetics, Department of Pediatrics, The Children's Hospital of Philadelphia, Hôpital Bretonneau-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), 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, Nosology, Male, Opitz BBBG syndrome, [SDV]Life Sciences [q-bio], 030105 genetics & heredity, Craniofacial Abnormalities, Cranial neural crest, Intellectual disability, SPECC1L, Child, Genetics (clinical), Growth Disorders, Genetics, Hypospadias, Hypertelorism, General Medicine, Omphalocele, Pedigree, Phenotype, Child, Preschool, Female, Hand Deformities, Congenital, Hydrocephalus, Adult, Adolescent, Foot Deformities, Congenital, Biology, Actin cytoskeleton organization, Article, Craniosynostosis, 03 medical and health sciences, Esophagus, medicine, Teebi hypertelorism syndrome, Humans, Abnormalities, Multiple, Obesity, Craniofacial, Bicornuate uterus, MID1, Facies, medicine.disease, Phosphoproteins, 030104 developmental biology, Mutation, Mental Retardation, X-Linked, Spindle organization
Abstract: International audience; The SPECC1L protein plays a role in adherens junctions involved in cell adhesion, actin cytoskeleton organization, microtubule stabilization, spindle organization and cytokinesis. It modulates PI3K-AKT signaling and controls cranial neural crest cell delamination during facial morphogenesis. SPECC1L causative variants were first identified in individuals with oblique facial clefts. Recently, causative variants in SPECC1L were reported in a pedigree reported in 1988 as atypical Opitz GBBB syndrome. Six families with SPECC1L variants have been reported thus far. We report here eight further pedigrees with SPECC1L variants, including a three-generation family, and a further individual of a previously published family. We discuss the nosology of Teebi and GBBB, and the syndromes related to SPECC1L variants. Although the phenotype of individuals with SPECC1L mutations shows overlap with Opitz syndrome in its craniofacial anomalies, the canonical laryngeal malformations and male genital anomalies are not observed. Instead, individuals with SPECCL1 variants have branchial fistulae, omphalocele, diaphragmatic hernias, and uterus didelphis. We also point to the clinical overlap of SPECC1L syndrome with mild Baraitser-Winter craniofrontofacial syndrome: they share similar dysmorphic features (wide, short nose with a large tip, cleft lip and palate, blepharoptosis, retrognathia, and craniosynostosis), although intellectual disability, neuronal migration defect, and muscular problems remain largely specific to Baraitser-Winter syndrome. In conclusion, we suggest that patients with pathogenic variants in SPECC1L should not be described as "dominant (or type 2) Opitz GBBB syndrome", and instead should be referred to as "SPECC1L syndrome" as both disorders show distinctive, non overlapping developmental anomalies beyond facial communalities.
Published: 2018

14. A Recurrent De Novo PACS2 Heterozygous Missense Variant Causes Neonatal-Onset Developmental Epileptic Encephalopathy, Facial Dysmorphism, and Cerebellar Dysgenesis

Author: Olson, Heather, Jean-Marçais, Nolwenn, Yang, Edward, Héron, Delphine, Tatton-Brown, Katrina, van der Zwaag, Paul, Bijlsma, Emilia, Krock, Bryan, Backer, E., Kamsteeg, Erik-Jan, Sinnema, Margje, Reijnders, Margot R.F., Bearden, David, Begtrup, Amber, Telegrafi, Aida, Lunsing, Roelineke, Burglen, Lydie, Lesca, Gaetan, Cho, Megan, Smith, Lacey, Sheidley, Beth, Moufawad El Achkar, Christelle, Pearl, Phillip, Poduri, Annapurna, Skraban, Cara, Tarpinian, Jennifer, Nesbitt, Addie, Fransen van de Putte, Dietje, Ruivenkamp, Claudia A.L., Rump, Patrick, Chatron, Nicolas, Sabatier, Isabelle, De Bellescize, Julitta, Guibaud, Laurent, Sweetser, David, Waxler, Jessica, Wierenga, Klaas, DDD Study,, Donadieu, Jean, Narayanan, Vinodh, Ramsey, Keri, C4RCD Research Group,, Nava, Caroline, Rivière, Jean-Baptiste, Vitobello, Antonio, Tran Mau-Them, Frederic, Philippe, Christophe, Bruel, Ange-Line, Duffourd, Yannis, Thomas, Laurel, Lelieveld, Stefan, Schuurs-Hoeijmakers, Janneke, Brunner, Han, Keren, Boris, Thevenon, Julien, Faivre, Laurence, Thomas, Gary, Thauvin-Robinet, Christel, Department of Neurology, Children's Hospital [Boston], Boston Children's Hospital, 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), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), University Medical Center Groningen [Groningen] (UMCG), Department of Clinical Genetics (Leiden University Medical Center), Leiden University Medical Center (LUMC), Children’s Hospital of Philadelphia (CHOP ), GeneDx [Gaithersburg, MD, USA], 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), GRC ConCer-LD, Université Pierre et Marie Curie - Paris 6 (UPMC), 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), Department of Pathology and Laboratory Medicine [Philadelphia, PA, USA], University of Pennsylvania [Philadelphia]-Perelman School of Medicine, University of Pennsylvania [Philadelphia], Department of Clinical Genetics [Leiden, the Netherlands], Service de Neurologie Pédiatrique [CHU Lyon], Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Département d'Epilepsie, Sommeil et Neurophysiologie Pédiatrique [HCL, Lyon], Hospices Civils de Lyon (HCL), Service de Radiologie [Hôpital Femme Mère Enfant - HCL], Service d'hématologie-immunologie-oncologie pédiatrique [CHU Trousseau], 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], 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), 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), Department ofMicrobiology and Molecular Genetics ( University of Pittsburgh), University of Pittsburgh (PITT), Pennsylvania Commonwealth System of Higher Education (PCSHE)-Pennsylvania Commonwealth System of Higher Education (PCSHE), Department of Human Genetics [Nijmegen], Radboud University Medical Center [Nijmegen], Radboud Institute for Molecular Life Sciences [Nijmegen, the Netherlands], Donders Institute for Brain, Cognition and Behaviour, Radboud university [Nijmegen], University of Pittsburgh Cancer Institute, MUMC+: DA KG Polikliniek (9), RS: GROW - R4 - Reproductive and Perinatal Medicine, Klinische Genetica, and MUMC+: DA Klinische Genetica (5)
Subjects: Male, 0301 basic medicine, Pathology, PACS-2, Vesicular Transport Proteins, PHENOTYPE, Bioinformatics, DISEASE, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Epilepsy, 0302 clinical medicine, Missense mutation, Global developmental delay, Age of Onset, Child, Genetics (clinical), Epileptic encephalopathy, APOPTOSIS, 3. Good health, cerebellar dysgenesis, Mutation, Missense/genetics, intellectual disability, Child, Preschool, Epilepsy, Generalized, Female, PACS2, CLINICAL EPILEPSY, medicine.medical_specialty, Heterozygote, Generalized/genetics, PROTEINS, Genetic counseling, Mutation, Missense, Missense/genetics, Neonatal onset, Biology, DIAGNOSIS, Vesicular Transport Proteins/genetics, Facial dysmorphism, 03 medical and health sciences, Dysgenesis, All institutes and research themes of the Radboud University Medical Center, Cerebellar Diseases, Report, MENDELIAN DISORDERS, Genetics, medicine, Humans, Generalized epilepsy, Preschool, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], Cerebellar Diseases/genetics, business.industry, MUTATIONS, Infant, Newborn, Correction, Infant, Facies, Newborn, medicine.disease, 030104 developmental biology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Mutation, epilepsy, Autism, business, Epilepsy, Generalized/genetics, 030217 neurology & neurosurgery
Abstract: International audience; Developmental and epileptic encephalopathies (DEEs) represent a large clinical and genetic heterogeneous group of neurodevelopmental diseases. The identification of pathogenic genetic variants in DEEs remains crucial for deciphering this complex group and for accurately caring for affected individuals (clinical diagnosis, genetic counseling, impacting medical, precision therapy, clinical trials, etc.). Whole-exome sequencing and intensive data sharing identified a recurrent de novo PACS2 heterozygous missense variant in 14 unrelated individuals. Their phenotype was characterized by epilepsy, global developmental delay with or without autism, common cerebellar dysgenesis, and facial dysmorphism. Mixed focal and generalized epilepsy occurred in the neonatal period, controlled with difficulty in the first year, but many improved in early childhood. PACS2 is an important PACS1 paralog and encodes a multifunctional sorting protein involved in nuclear gene expression and pathway traffic regulation. Both proteins harbor cargo(furin)-binding regions (FBRs) that bind cargo proteins, sorting adaptors, and cellular kinase. Compared to the defined PACS1 recurrent variant series, individuals with PACS2 variant have more consistently neonatal/early-infantile-onset epilepsy that can be challenging to control. Cerebellar abnormalities may be similar but PACS2 individuals exhibit a pattern of clear dysgenesis ranging from mild to severe. Functional studies demonstrated that the PACS2 recurrent variant reduces the ability of the predicted autoregulatory domain to modulate the interaction between the PACS2 FBR and client proteins, which may disturb cellular function. These findings support the causality of this recurrent de novo PACS2 heterozygous missense in DEEs with facial dysmorphim and cerebellar dysgenesis.
Published: 2018

15. 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

16. LARP7 variants and further delineation of the Alazami syndrome phenotypic spectrum among primordial dwarfisms: 2 sisters

Author: Anne Boland, Marjolaine Willems, Jean-Baptiste Rivière, Florence Apparailly, Elodie Sanchez, Frédéric Tran Mau Them, Julien Thevenon, David Geneviève, Marion Imbert-Bouteille, Thomas Guignard, Vincent Gatinois, Vincent Meyer, Jean-François Deleuze, CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), 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), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), 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, Université Bourgogne Franche-Comté [COMUE] (UBFC), Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Plateau technique de Biologie [CHU de Dijon], Centre National de Génotypage (CNG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), IFR3, Université Montpellier 1 (UM1)-Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Philips, Alexandre, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), 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: medicine.medical_specialty, Heart malformation, [SDV]Life Sciences [q-bio], Dwarfism, 03 medical and health sciences, Loss of Function Mutation, Intellectual Disability, Intellectual disability, Genetics, medicine, Humans, Child, Genetics (clinical), Exome sequencing, Loss function, 030304 developmental biology, 0303 health sciences, business.industry, Siblings, 030305 genetics & heredity, General Medicine, Syndrome, medicine.disease, Dermatology, Phenotype, [SDV] Life Sciences [q-bio], Ribonucleoproteins, Etiology, Microcephaly, Female, Primordial dwarfism, business, Mild microcephaly
Abstract: Alazami syndrome (AS) (MIM# 615071 ) is an autosomal recessive microcephalic primordial dwarfism (PD) with recognizable facial features and severe intellectual disability due to depletion or loss of function variants in LARP7. To date, 15 patients with AS have been reported. Here we describe two consanguineous Algerian sisters with Alazami PD due to LARP7 homozygous pathogenic variants detected by whole exome sequencing. By comparing these two additional cases with those previously reported, we strengthen the key features of AS: severe growth restriction, severe intellectual disability and some distinguishing facial features such as broad nose, malar hypoplasia, wide mouth, full lips and abnormally set teeth. We also report significant new findings enabling further delineation of this syndrome: disproportionately mild microcephaly, stereotypic hand wringing and severe anxiety, thickened skin over the hands and feet, and skeletal, eye and heart malformations. From previous reviews, we summarize the main etiologies of PD according to the involved mechanisms and cellular pathways, highlighting their clinical core features.
Published: 2017

17. Further delineation of the clinical spectrum of de novo TRIM8 truncating mutations

Author: Véronique Darmency, Sharon Whiting, Laurence Faivre, Jean-François Deleuze, Daniel H. Lowenstein, Julien Thevenon, Rebecca Hernan, Matthew A. Lines, Orly Elpeleg, Yannis Duffourd, Corinne Antignac, Mirna Assoum, Erin L. Heinzen, Martine Lemesle, Christel Thauvin-Robinet, Aurélie Bertholet-Thomas, Wendy K. Chung, Orrin Devinsky, Eric B. Geller, Vincent des Portes, Alexandre Belot, Simon Edvardson, 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, Children's Hospital of Eastern Ontario, Department of Genetics and Metabolic Diseases and the Monique and Jacques Roboh Department of Genetic Research, Hadassah Hebrew University Medical Center [Jerusalem], Service de Neurophysiologie Clinique (CHU Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), New York University School of Medicine (NYU), New York University School of Medicine, NYU System (NYU)-NYU System (NYU), Columbia University Medical Center (CUMC), Columbia University [New York], Imagine - Institut des maladies génétiques (IMAGINE - U1163), Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Necker Enfants-Malades (INEM - UM 111 (UMR 8253 / U1151)), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), CHU Necker - Enfants Malades [AP-HP], Centre National de Génotypage (CNG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut des Sciences cognitives Marc Jeannerod - Laboratoire sur le langage, le cerveau et la cognition (L2C2), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Réponse immunitaire innée dans les maladies infectieuses et auto-immunes – Innate immunity in infectious and autoimmune diseases, Centre International de Recherche en Infectiologie - UMR (CIRI), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Lyon (ENS Lyon)-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), Service de néphrologie, rhumatologie et dermatologie pédiatriques [Hôpital Femme Mère Enfant, HCL], Hospices Civils de Lyon (HCL)-Hôpital Mère Enfant, FHU TRANSLAD, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), University of California [San Francisco] (UCSF), University of California, Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Centre International de Recherche en Infectiologie (CIRI), 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)-École normale supérieure de Lyon (ENS de Lyon)-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), FHU TRANSLAD (CHU de Dijon), University of California [San Francisco] (UC San Francisco), University of California (UC), 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), 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, Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL)
Subjects: 0301 basic medicine, Male, Adolescent, Nerve Tissue Proteins, Bioinformatics, whole exome sequencing, 03 medical and health sciences, Epilepsy, Tripartite Motif, Genetics, medicine, Humans, TRIM8, Amino Acid Sequence, Child, Gene, Genetics (clinical), De novo mutations, Exome sequencing, business.industry, nephrotic syndrome, Epileptic encephalopathy, Infant, Newborn, Infant, medicine.disease, Phenotype, 3. Good health, 030104 developmental biology, epileptic encephalopathy, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Child, Preschool, Mutation, Female, business, Carrier Proteins, Nephrotic syndrome
Abstract: IF 2.264; International audience; De novo mutations of the TRIM8 gene, which codes for a tripartite motif protein, have been identified using whole exome sequencing (WES) in two patients with epileptic encephalopathy (EE), but these reports were not sufficient to conclude that TRIM8 was a novel gene responsible for EE. Here we report four additional patients presenting with EE and de novo truncating mutations of TRIM8 detected by WES, and give further details of the patient previously reported by the Epi4K consortium. Epilepsy of variable severity was diagnosed in children aged 2 months to 3.5 years of age. All patients had developmental delay of variable severity with no or very limited language, often associated with behavioral anomalies and unspecific facial features or MRI brain abnormalities. The phenotypic variability observed in these patients appeared related to the severity of the epilepsy. One patient presented pharmacoresistant EE with regression, recurrent infections and nephrotic syndrome, compatible with the brain and kidney expression of TRIM8. Interestingly, all mutations were located at the highly conserved C-terminus section of TRIM8. This collaborative study confirms that TRIM8 is a novel gene responsible for EE, possibly associated with nephrotic syndrome. This report brings new evidence on the pathogenicity of TRIM8 mutations and highlights the value of data-sharing to delineate the phenotypic characteristics and biological basis of extremely rare disorders.
Published: 2017

18. High Rate of Recurrent De Novo Mutations in Developmental and Epileptic Encephalopathies

Author: Patrick Cossette, Zoha Kibar, Maxime Cadieux-Dion, Helen Brittain, Andrew E. Fry, Emily Fassi, Edward Blair, Simone Martinelli, Paul J. Benke, Guy D'Anjou, Alexandre D. Laporte, Berge A. Minassian, Sylvia Stockler, Tyson L Ware, David R. FitzPatrick, Weimin Bi, Amy L Schneider, Jill A. Rosenfeld, Shekeeb S. Mohammad, Jacques L. Michaud, Carlos A. Bacino, Joss Shelagh, Samuel F. Berkovic, Stéphane Auvin, Yunru Shao, Sylvia Dobrzeniecka, Kelly Mo, Cory Tam, Nicole Corsten-Janssen, Wendy K. Chung, Renee-Myriam Boucher, Alain Verloes, Fadi F. Hamdan, Bronwyn Kerr, Frédéric Tran Mau-Them, Martina Bebin, Philippe M. Campeau, Dara V.F. Albert, Guy A. Rouleau, Quinn Stein, Anne Lortie, Susan M. Hiatt, Lubov Blumkin, Boris Keren, Dan Spiegelman, Saadet Mercimek-Mahmutoglu, Ronald G. Lafrenière, Marie-Christine Nougues, Rhys H. Thomas, Erica H. Gerkes, Elsa Rossignol, Bruno Dallapiccola, Klaas J. Wierenga, Natalie Canham, Monica H. Wojcik, Caroline Meloche, Moira Blyth, Cyril Mignot, Heather C Mefford, Ledia Brunga, D. L. Jones, François Dubeau, Kyle Retterer, James J. O'Byrne, Christine Massicotte, Vincenzo Leuzzi, Caroline Nava, Ingrid E. Scheffer, Erik-Jan Kamsteeg, Cyrus Boelman, Megan T. Cho, Gabriela Purcarin, Brigid M. Regan, Jean Monlong, Simon Girard, Philippe Major, Marguerite Miguet, Katrin Õunap, Yu Chi Liu, Guillaume Bourque, Myriam Srour, Ousmane Diallo, Emilie Riou, Lionel Carmant, Seema R. Lalani, Christina Nassif, Robert Roger Lebel, Anna Lehman, Georgie Hollingsworth, Stéphanie Jacques, Sunita Venkateswaran, Marco Tartaglia, Candace T. Myers, Ange-Line Bruel, Danielle M. Andrade, Imad Jarjour, Peyman Bizargity, Sara J. Dorison, Jane A. Hurst, Richard E. Frye, Lynette G. Sadleir, Alan Donaldson, Fernando Scaglia, Philippe Lemay, Paola Diadori, Laura Davis-Keppen, Division of Genetic Medicine [Seattle], University of Washington [Seattle], Centre hospitalier universtaire de Montréal, Université de Montréal, Baylor College of Medicine ( BCM ), Baylor College of Medicine, Laboratoire de Diagnostic Génétique, CHU Strasbourg-Hopital Civil, Clinical Genetics Department, St Michael's Hospital, Department of Clinical Genetics, Oxford Regional Genetics Service, The Churchill hospital, Regional Genetic Service, St Mary's Hospital, Manchester, SUNY Upstate Medical University, 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 ), 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 ), 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 ), Hôpital Robert Debré, Universitätsklinikum Leipzig, Institute of Plant and Microbial Biology, Academia Sinica, Istituto di Genetica Medica, Medical Genetics and Pediatric Cardiology, IRCCS Ospedale Pediatrico Bambino Gesù [Roma], Ematologia, Oncologia e Medicina Molecolare, Istituto Superiore di Sanita', Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Pitié-Salpêtrière [APHP], Service de génétique, cytogénétique, embryologie [Pitié-Salpétrière], Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Pitié-Salpêtrière [APHP], 'Personal Protection Against Vectors' working group ( PPAV ), PPAV working group, Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute ( ICM ), Centre National de la Recherche Scientifique ( CNRS ) -CHU Pitié-Salpêtrière [APHP]-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ), Département de Mathématiques, Université de Sherbrooke, Université de Sherbrooke [Sherbrooke], McGill University and Genome Quebec Innovation Centre, Center of Excellence in Neuromics, University of Montreal, The Hospital for sick children [Toronto] ( SickKids ), CHU Sainte Justine [Montréal], Genome Canada Genome Quebec Jeanne and Jean-Louis Levesque Foundation Michael Bahen Chair in Epilepsy Research Ontario Brain Institute McLaughlin Foundation University of Toronto National Institute of Neurological Disorders and Stroke RO1 NS069605 University of Toronto McLaughlin Accelerator Grant in Genomic Medicine MC-2013-08, Baylor College of Medicine (BCM), Baylor University, State University of New York (SUNY), 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-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, Istituto Superiore di Sanità (ISS), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), 'Personal Protection Against Vectors' working group (PPAV), 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)-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), Département de mathématiques [Sherbrooke] (UdeS), Faculté des sciences [Sherbrooke] (UdeS), Université de Sherbrooke (UdeS)-Université de Sherbrooke (UdeS), The Hospital for sick children [Toronto] (SickKids), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), 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)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: Male, 0301 basic medicine, Candidate gene, medicine.medical_specialty, medical genetics, glycosylation, Nonsense mutation, Genome-wide association study, Gene mutation, Biology, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Article, severe intellectual disability, 03 medical and health sciences, Epilepsy, 0302 clinical medicine, children, Recurrence, Seizures, Genetic linkage, Intellectual Disability, [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology, Journal Article, Genetics, medicine, Humans, Child, disorders, Genetics (clinical), Genetic association, Brain Diseases, disease, cis-prenyltransferase, Genome, Human, structural basis, medicine.disease, diphosphate synthase, 030104 developmental biology, Child, Preschool, Mutation, Medical genetics, Female, nogo-b receptor, 030217 neurology & neurosurgery, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Genome-Wide Association Study, Meta-Analysis
Abstract: Item does not contain fulltext Developmental and epileptic encephalopathy (DEE) is a group of conditions characterized by the co-occurrence of epilepsy and intellectual disability (ID), typically with developmental plateauing or regression associated with frequent epileptiform activity. The cause of DEE remains unknown in the majority of cases. We performed whole-genome sequencing (WGS) in 197 individuals with unexplained DEE and pharmaco-resistant seizures and in their unaffected parents. We focused our attention on de novo mutations (DNMs) and identified candidate genes containing such variants. We sought to identify additional subjects with DNMs in these genes by performing targeted sequencing in another series of individuals with DEE and by mining various sequencing datasets. We also performed meta-analyses to document enrichment of DNMs in candidate genes by leveraging our WGS dataset with those of several DEE and ID series. By combining these strategies, we were able to provide a causal link between DEE and the following genes: NTRK2, GABRB2, CLTC, DHDDS, NUS1, RAB11A, GABBR2, and SNAP25. Overall, we established a molecular diagnosis in 63/197 (32%) individuals in our WGS series. The main cause of DEE in these individuals was de novo point mutations (53/63 solved cases), followed by inherited mutations (6/63 solved cases) and de novo CNVs (4/63 solved cases). De novo missense variants explained a larger proportion of individuals in our series than in other series that were primarily ascertained because of ID. Moreover, these DNMs were more frequently recurrent than those identified in ID series. These observations indicate that the genetic landscape of DEE might be different from that of ID without epilepsy.
Published: 2017

19. Fifteen years of research on oral-facial-digital syndromes: from 1 to 16 causal genes

Author: Nadège Gigot, Anne Dieux, Yannis Duffourd, Bernard Aral, Lydie Burglen, Bérénice Doray, Olivier Rosnet, Alice Goldenberg, Martijn A. Huynen, Oliver E. Blacque, Brunella Franco, André Mégarbané, Diane Doummar, Ernie M.H.F. Bongers, Anne Fargeot-Espaliat, Clarisse Baumann, Judith St-Onge, Daniel Birnbaum, Sophie Saunier, Thibaut Eguether, Jean-François Deleuze, Estelle Lopez, Dominique Gaillard, Geneviève Pierquin, Shubha R. Phadke, Michel R. Leroux, Rachel H. Giles, Tania Attié-Bitach, Jaclyn S. Goldstein, Isabelle Desguerres, Elisabeth Steichen-Gersdorf, Brigitte Gilbert-Dussardier, Manuela Morleo, Jesús Argente, Jean Baptiste Rivière, Gregory J. Pazour, Christel Thauvin-Robinet, Julien Thevenon, Albert David, Maxence V. Nachury, Laurence Faivre, Philippe Loget, Véronique Chevrier, Bruno Reversade, Laurence Jego, Ange Line Bruel, Vicente Herranz-Pérez, Laurent Pasquier, Colin A. Johnson, John B. Wallingford, Valérie Cormier-Daire, Inusha Panigrahi, 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, Institut d'Astrophysique et de Géophysique [Liège], Université de Liège, FHU TRANSLAD (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), Lipides - Nutrition - Cancer (U866) (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-Ecole Nationale Supérieure de Biologie Appliquée à la Nutrition et à l'Alimentation de Dijon (ENSBANA), Génétique des Anomalies du Développement (GAD), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Centre National de Génotypage (CNG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Service: neuropédiatrie pathologie du développement, Université Pierre et Marie Curie - Paris 6 (UPMC), University Medical Center [Utrecht], University of Leeds, Radboud University [Nijmegen], Centre de Recherche en Cancérologie de Marseille (CRCM), Aix Marseille Université (AMU)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre de Génétique Humaine, Université de Liège-CHU Liège, Service de Génétique, Hôpital de Hautepierre [Strasbourg], Génétique Médicale, Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Centre de Référence Anomalies du Développement Ouest, Laboratory of Human Embryology and Genetics, Institute of Medical Biology, Singapore, Department of Pediatrics, Innsbruck Medical University = Medizinische Universität Innsbruck (IMU), Département de Génétique Médicale, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré, Advanced Pediatric Center (PGIMER), Pediatry center, Pédiatrie Neonatalogie, Centre Hospitalier Général, Brive-la-Gaillarde, Brive-la-Gaillarde, France, Service de Génétique clinique, Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Dauphine Recherches en Management - MLAB (DRM - MLAB), Dauphine Recherches en Management (DRM), Université Paris Dauphine-PSL, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Dauphine-PSL, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Service de génétique [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Department of human genetics, Radboud University Medical Center [Nijmegen]-Nijmegen Centre for Molecular Life Sciences-Institute for Genetic and Metabolic Disorders, Centre de génétique et Centre de référence maladies rares et anomalies du développement et syndromes malformatifs du Centre Est, Département de Génétique et Procréation UF-Hôpital Couple Enfant de Grenoble-CHU Grenoble, Hospital Universitario La Paz, Laboratoire de Génétique Chromosomique et Moléculaire [CHU Dijon], FHU TRANSLAD, Département de Génétique, Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India, Génétique et épigénétique des maladies métaboliques, neurosensorielles et du développement (Inserm U781), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Imagerie intégrative de la molécule à l'organisme, Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Service d'anatomie et cytologie pathologiques [Rennes] = Anatomy and Cytopathology [Rennes], CHU Pontchaillou [Rennes], Neuropathies héréditaires et rein en développement, Institut National de la Santé et de la Recherche Médicale (INSERM), Unité de génétique médicale, Université Saint-Joseph de Beyrouth (USJ)-Institut National de la Santé et de la Recherche Médicale (INSERM), Imagine - Institut des maladies génétiques (IMAGINE - U1163), 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 ), FHU TRANSLAD, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Lipides - Nutrition - Cancer (U866) ( 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-Ecole Nationale Supérieure de Biologie Appliquée à la Nutrition et à l'Alimentation de Dijon ( ENSBANA ), Génétique des Anomalies du Développement ( GAD ), IFR100 - Structure fédérative de recherche Santé-STIC-Université de Bourgogne ( UB ), Centre National de Génotypage ( CNG ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Université Pierre et Marie Curie - Paris 6 ( UPMC ), Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands, Section of Ophthalmology and Neurosciences, Leeds Institute of Molecular Medicine, University of Leeds, Leeds, UK, Radboud university [Nijmegen], Centre de Recherche en Cancérologie de Marseille ( CRCM ), Aix Marseille Université ( AMU ) -Institut Paoli-Calmettes-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Service de neuropédiatrie et pathologie du développement, Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Trousseau [APHP], Service de neurométabolisme, Hôpital Necker-Enfants Malades, CHU, Paris, France, CHU de Poitiers-Centre de Référence Anomalies du Développement Ouest, Innsbruck Medical University [Austria] ( IMU ), Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Robert Debré, Advanced Pediatric Center ( PGIMER ), Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] ( CHRU Lille ), Dauphine Recherches en Management - MLAB ( DRM - MLAB ), Dauphine Recherches en Management ( DRM ), Université Paris-Dauphine-Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Dauphine-Centre National de la Recherche Scientifique ( CNRS ), CHU Rouen-Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ), Génétique et épigénétique des maladies métaboliques, neurosensorielles et du développement ( Inserm U781 ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Institut National de la Santé et de la Recherche Médicale ( INSERM ) -INSTITUT CURIE, Service d'anatomie et cytologie pathologiques [Rennes], Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Institut National de la Santé et de la Recherche Médicale ( INSERM ), Université Saint-Joseph de Beyrouth ( USJ ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Imagine - Institut des maladies génétiques ( IMAGINE - U1163 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Paris Descartes - Paris 5 ( UPD5 ), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Aix Marseille Université (AMU), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Trousseau [APHP], Innsbruck Medical University [Austria] (IMU), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré, Centre National de la Recherche Scientifique (CNRS)-Université Paris Dauphine-PSL-Centre National de la Recherche Scientifique (CNRS)-Université Paris Dauphine-PSL, Institut Curie-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)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bourgogne (UB)-Ecole Nationale Supérieure de Biologie Appliquée à la Nutrition et à l'Alimentation de Dijon (ENSBANA)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Bruel, Ange Line, Franco, Brunella, Duffourd, Yanni, Thevenon, Julien, Jego, Laurence, Lopez, Estelle, Deleuze, Jean Françoi, Doummar, Diane, Giles, Rachel H, Johnson, Colin A, Huynen, Martijn A, Chevrier, Véronique, Burglen, Lydie, Morleo, Manuela, Desguerres, Isabelle, Pierquin, Geneviève, Doray, Bérénice, Gilbert Dussardier, Brigitte, Reversade, Bruno, Steichen Gersdorf, Elisabeth, Baumann, Clarisse, Panigrahi, Inusha, Fargeot Espaliat, Anne, Dieux, Anne, David, Albert, Goldenberg, Alice, Bongers, Ernie, Gaillard, Dominique, Argente, Jesú, Aral, Bernard, Gigot, Nadège, St Onge, Judith, Birnbaum, Daniel, Phadke, Shubha R, Cormier Daire, Valérie, Eguether, Thibaut, Pazour, Gregory J, Herranz Pérez, Vicente, Goldstein, Jaclyn S, Pasquier, Laurent, Loget, Philippe, Saunier, Sophie, Mégarbané, André, Rosnet, Olivier, Leroux, Michel R, Wallingford, John B, Blacque, Oliver E, Nachury, Maxence V, Attie Bitach, Tania, Rivière, Jean Baptiste, Faivre, Laurence, Thauvin Robinet, Christel, Bruel, Al, Franco, B, Duffourd, Y, Thevenon, J, Jego, L, Lopez, E, Deleuze, Jf, Doummar, D, Giles, Rh, Johnson, Ca, Huynen, Ma, Chevrier, V, Burglen, L, Morleo, M, Desguerres, I, Pierquin, G, Doray, B, Gilbert-Dussardier, B, Reversade, B, Steichen-Gersdorf, E, Baumann, C, Panigrahi, I, Fargeot-Espaliat, A, Dieux, A, David, A, Goldenberg, A, Bongers, E, Gaillard, D, Argente, J, Aral, B, Gigot, N, St-Onge, J, Birnbaum, D, Phadke, Sr, Cormier-Daire, V, Eguether, T, Pazour, Gj, Herranz-Perez, V, Goldstein, J, Pasquier, L, Loget, P, Saunier, S, Megarbane, A, Rosnet, O, Leroux, Mr, Wallingford, Jb, Blacque, Oe, Nachury, Mv, Attie-Bitach, T, Riviere, Jb, Faivre, L, and Thauvin-Robinet, C
Subjects: Male, 0301 basic medicine, Heterozygote, ciliopathie, Oral facial digital, [SDV]Life Sciences [q-bio], [ SDV.BBM.BM ] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Biology, Ciliopathies, Centriole elongation, 03 medical and health sciences, Intraflagellar transport, Genotype, Genetics, Polycystic kidney disease, medicine, Humans, Abnormalities, Multiple, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, Functional studies, [ SDV.BBM ] Life Sciences [q-bio]/Biochemistry, Molecular Biology, Gene, oral-facial-digital syndromes, Genetics (clinical), ComputingMilieux_MISCELLANEOUS, Encephalocele, Polycystic Kidney Diseases, [ SDV ] Life Sciences [q-bio], ciliopathies, Proteins, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Orofaciodigital Syndromes, medicine.disease, 030104 developmental biology, Face, Mutation, Female, Retinitis Pigmentosa, Rare cancers Radboud Institute for Health Sciences [Radboudumc 9], Ciliary Motility Disorders
Abstract: Oral–facial–digital syndromes (OFDS) gather rare genetic disorders characterised by facial, oral and digital abnormalities associated with a wide range of additional features (polycystic kidney disease, cerebral malformations and several others) to delineate a growing list of OFDS subtypes. The most frequent, OFD type I, is caused by a heterozygous mutation in theOFD1gene encoding a centrosomal protein. The wide clinical heterogeneity of OFDS suggests the involvement of other ciliary genes. For 15 years, we have aimed to identify the molecular bases of OFDS. This effort has been greatly helped by the recent development of whole-exome sequencing (WES). Here, we present all our published and unpublished results for WES in 24 cases with OFDS. We identified causal variants in five new genes (C2CD3,TMEM107,INTU,KIAA0753andIFT57) and related the clinical spectrum of four genes in other ciliopathies (C5orf42,TMEM138,TMEM231andWDPCP) to OFDS. Mutations were also detected in two genes previously implicated in OFDS. Functional studies revealed the involvement of centriole elongation, transition zone and intraflagellar transport defects in OFDS, thus characterising three ciliary protein modules: the complex KIAA0753-FOPNL-OFD1, a regulator of centriole elongation; the Meckel-Gruber syndrome module, a major component of the transition zone; and the CPLANE complex necessary for IFT-A assembly. OFDS now appear to be a distinct subgroup of ciliopathies with wide heterogeneity, which makes the initial classification obsolete. A clinical classification restricted to the three frequent/well-delineated subtypes could be proposed, and for patients who do not fit one of these three main subtypes, a further classification could be based on the genotype.
Published: 2017

20. Postzygotic inactivating mutations of RHOA cause a mosaic neuroectodermal syndrome

Author: M. Elizabeth Ross, Philippine Garret, Jean Benoît Courcet, Guillaume Captier, Francesca Faravelli, Michèle Mathieu-Dramard, Veronica A. Kinsler, Bernard Devauchelle, Bénédicte Demeer, David Geneviève, S.S. Kholmanskikh, Odile Boute, Christel Thauvin, Satyamaanasa Polubothu, Paul Kuentz, Julien Thevenon, Esther Carmi, Arnaud Lafon, William B. Dobyns, Yannis Duffourd, Geneviève Bernard, Judith St-Onge, Laurence Faivre, Jean Baptiste Rivière, Arthur Sorlin, Pierre Vabres, Catherine Gondry-Jouet, Alain Bron, Didier Bessis, V. Carmignac, Laurent Guibaud, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), 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), 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), Weill Cornell Medicine, CHU Amiens-Picardie, McGill University = Université McGill [Montréal, Canada], Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Centre Hospitalier Universitaire de Montpellier (CHU Montpellier ), Centre Hospitalier Universitaire de Lille (CHU de Lille), Centre des Sciences du Goût et de l'Alimentation [Dijon] (CSGA), Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Université Bourgogne Franche-Comté [COMUE] (UBFC), Dermatology Office, Hospices Civils de Lyon (HCL), Seattle Children’s Research Institute, Montreal Children’s Hospital, University College of London [London] (UCL), This work was funded by the Agence Nationale de la Recherche (grant no. ANR-13-PDOC-0029 to J.-B.R.), the Programme Hospitalier de Recherche Clinique National 2010 (grant no. NCT01950975 to P.V.), the NIH (grant no. HD067244 to M.E.R.) and the Societe Francaise de Dermatologie. G.B. has received a Research Scholar Junior 1 (2012-2016) salary award from the Fonds de Recherche du Quebec en Sante and the New Investigator salary award (2017-2022) from the Canadian Institute for Health Research (no. MOP-G-287547, file no. 24805)., ProdInra, Migration, 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 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
Subjects: RHOA, Zygote, Skin Pigmentation, Disease, Article, Leukoencephalopathy, 03 medical and health sciences, 0302 clinical medicine, Genetics, medicine, Humans, [SDV.MHEP.OS]Life Sciences [q-bio]/Human health and pathology/Sensory Organs, 030304 developmental biology, Hypopigmentation, 0303 health sciences, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, biology, Extramural, Mosaicism, Neurocutaneous Syndromes, medicine.disease, 3. Good health, [SDV.MHEP.OS] Life Sciences [q-bio]/Human health and pathology/Sensory Organs, Mutation, Etiology, Cancer research, biology.protein, medicine.symptom, rhoA GTP-Binding Protein, 030217 neurology & neurosurgery, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Hypopigmentation along Blaschko’s lines is a hallmark of a poorly defined group of mosaic syndromes whose genetic causes are unknown. Here we show that postzygotic inactivating mutations of RHOA cause a neuroectodermal syndrome combining linear hypopigmentation, alopecia, apparently asymptomatic leukoencephalopathy, and facial, ocular, dental, and acral anomalies. Our findings pave the way towards elucidating the etiology of pigmentary mosaicism and highlight the role of RHOA in human development and disease., Editorial summary Postzygotic inactivating mutations in RHOA cause a mosaic neuroectodermal syndrome characterized by linear hypopigmentation, leukoencephalopathy, and craniofacial anomalies, highlighting the role of RHOA in human development and disease.
Published: 2016

21. Secondary findings from whole-exome/genome sequencing evaluating stakeholder perspectives. A review of the literature

Author: Elodie Gautier, David Geneviève, V. Goussot, A.S. Lapointe, Aurore Pélissier, Marc Bardou, C. Sawka, C. Thauvin-Robinet, Laurence Faivre, François Ghiringhelli, Elodie Cretin, F. Tran Mau-Them, Damien Sanlaville, G. Bertolone, R. Boidot, Catherine Lejeune, Christine Binquet, Julian Delanne, Antonio Vitobello, Ange-Line Bruel, A. Baurand, Yannis Duffourd, Maxime Luu, Christine Peyron, Christine Juif, Aline Chassagne, Laurent Demougeot, Christophe Philippe, Sophie Nambot, Olivier Putois, Françoise Houdayer, Julien Thevenon, L. Joly, P. Pujol, C. Vernin, 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), 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, INSERM Centre Innovation Technologique 808 (INSERM CIT 808), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Subjectivité, lien social et modernité (SuLiSoM), Université de Strasbourg (UNISTRA), Laboratoire d'Economie de Dijon [Dijon] (LEDi), Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Genetic and Immunology Medical Institute (GIMI), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER-UNICANCER-Etablissement français du sang [Bourgogne-Franche-Comté] (EFS [Bourgogne-Franche-Comté]), Plateau technique de Biologie [CHU de Dijon], Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre d'Investigation Clinique 1432 (Dijon) - Epidemiologie Clinique/Essais Cliniques (CIC-EC), Université de Bourgogne (UB)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Institut National de la Santé et de la Recherche Médicale (INSERM), 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, Service de Génétique Clinique, Hôpital Femme Mère Enfant, Centre Hospitalier Universitaire de Lyon, Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), CCSD, Accord Elsevier, Institut de médecine génomique et d’immunothérapie (Genomic and Immunotherapy Medical Institute) (institut GIMI), and UNICANCER-UNICANCER-Etablissement français du sang [Bourgogne-Franche-Comté] (EFS [Bourgogne-Franche-Comté])-FHU TRANSLAD (CHU de Dijon)
Subjects: 0301 basic medicine, medicine.medical_specialty, Patients, Genetic Counseling, Disclosure, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, 030105 genetics & heredity, Choice Behavior, 03 medical and health sciences, Secondary findings, Stakeholder Participation, Informed consent, Multidisciplinary approach, Exome Sequencing, Genetics, medicine, Humans, Genetic Testing, Medical prescription, Exome, Genetics (clinical), Literature review, Incidental Findings, Opinion based studies, Modalities, Stakeholder, Subject (documents), General Medicine, 3. Good health, Test (assessment), 030104 developmental biology, Attitude, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Family medicine, Psychology, Actionability
Abstract: IF 2.004 (2017); International audience; With the development of next generation sequencing, beyond identifying the cause of manifestations that justified prescription of the test, other information with potential interest for patients and their families, defined as secondary findings (SF), can be provided once patients have given informed consent, in particular when therapeutic and preventive options are available. The disclosure of such findings has caused much debate. The aim of this work was to summarize all opinion-based studies focusing on SF, so as to shed light on the concerns that this question generate. A review of the literature was performed, focusing on all PubMed articles reporting qualitative, quantitative or mixed studies that interviewed healthcare providers, participants, or society regarding this subject. The methodology was carefully analysed, in particular whether or not studies made the distinction between actionable and non-actionable SF, in a clinical or research context. From 2010 to 2016, 39 articles were compiled. A total of 14,868 people were interviewed (1259 participants, 6104 healthcare providers, 7505 representatives of society). When actionable and non-actionable SF were distinguished (20 articles), 92% of respondents were keen to have results regarding actionable SF (participants: 88%, healthcare providers: 86%, society: 97%), against 70% (participants: 83%, healthcare providers: 62%, society: 73%) for non-actionable SF. These percentages were slightly lower in the specific situation of children probands. For respondents, the notion of the «patient's choice» is crucial. For healthcare providers, the importance of defining policies for SF among diagnostic lab, learning societies and/or countries is outlined, in particular regarding the content and extension of the list of actionable genes to propose, the modalities of information, and the access to information about adult-onset diseases in minors. However, the existing literature should be taken with caution, since most articles lack a clear definition of SF and actionability, and referred to hypothetical scenarios with limited information to respondents. Studies conducted by multidisciplinary teams involving patients with access to results are sadly lacking, in particular in the medium term after the results have been given. Such studies would feed the debate and make it possible to measure the impact of such findings and their benefit-risk ratio.
Published: 2019

22. Lysosomal Signaling Licenses Embryonic Stem Cell Differentiation via Inactivation of Tfe3

Author: Paul Kuentz, Magali Avila, Jean Baptiste Rivière, Pierre Vabres, Marietta Zinner, Julien Thevenon, Judith St-Onge, David Geneviève, Eveline S. J. M. de Bont, Florian Villegas, Floor A. M. Duijkers, Mieke M. van Haelst, Laurence Duplomb-Jego, Sébastien A. Smallwood, Silvana van Koningsbruggen, Daniel Olivieri, Nada Houcinat, Yannis Duffourd, Thibaud Jouan, Christel Thauvin-Robinet, Koen L.I. van Gassen, Daphné Lehalle, Melanie Rittirsch, Michael B. Stadler, Laurence Faivre, Daniel Hess, Klaske D. Lichtenbelt, Joerg Betschinger, Daniela Mayer, Friedrich Miescher Institute for Biomedical Research (FMI), Novartis Research Foundation, University of Basel (Unibas), FHU TRANSLAD (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), 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), Université Bourgogne Franche-Comté [COMUE] (UBFC), Swiss Institute of Bioinformatics [Lausanne] (SIB), Université de Lausanne (UNIL), Service de Dermatologie (CHU de Dijon), Beatrix Children's Hospital, Department of Clinical Genetics (Academic Medical Center, University of Amsterdam), VU University Medical Center [Amsterdam], Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), University Medical Center [Utrecht], Research Institute of the McGill University Hospital Centre, Human genetics, Cancer Center Amsterdam, Amsterdam Reproduction & Development (AR&D), Human Genetics, and ACS - Pulmonary hypertension & thrombosis
Subjects: Male, Transcription, Genetic, GTPase, GTP Phosphohydrolases, PATHWAY, Mice, 0302 clinical medicine, Neural Stem Cells, CRISPR, TUMOR-SUPPRESSOR, Cell Self Renewal, Phosphorylation, SPECIFICATION, developmental disorder, 0303 health sciences, Genome, Basic Helix-Loop-Helix Leucine Zipper Transcription Factors, Cell Differentiation, Mouse Embryonic Stem Cells, Flcn, differentiation, Cell biology, medicine.anatomical_structure, mTOR, Molecular Medicine, Female, Signal transduction, Protein Binding, Signal Transduction, RECRUITMENT, Biology, 03 medical and health sciences, Rag GTPases, Lysosome, Genetics, medicine, Animals, Humans, Point Mutation, NAIVE PLURIPOTENCY, AMINO-ACID LEVELS, Transcription factor, Alleles, PI3K/AKT/mTOR pathway, 030304 developmental biology, COMPLEX, FOLLICULIN, Ragulator, Cell Biology, pluripotency, embryonic stem cell, Embryonic stem cell, Tfe3, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Cytoplasm, Lysosomes, 030217 neurology & neurosurgery
Abstract: International audience; Self-renewal and differentiation of pluripotent murine embryonic stem cells (ESCs) is regulated by extrinsic signaling pathways. It is less clear whether cellular metabolism instructs developmental progression. In an unbiased genome-wide CRISPR/Cas9 screen, we identified components of a conserved amino-acid-sensing pathway as critical drivers of ESC differentiation. Functional analysis revealed that lysosome activity, the Ragulator protein complex, and the tumor-suppressor protein Folliculin enable the Rag GTPases C and D to bind and seclude the bHLH transcription factor Tfe3 in the cytoplasm. In contrast, ectopic nuclear Tfe3 represses specific developmental and metabolic transcriptional programs that are associated with peri-implantation development. We show differentiation-specific and non-canonical regulation of Rag GTPase in ESCs and, importantly, identify point mutations in a Tfe3 domain required for cytoplasmic inactivation as potentially causal for a human developmental disorder. Our work reveals an instructive and biomedically relevant role of metabolic signaling in licensing embryonic cell fate transitions.
Published: 2019

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22 results on '"Equipe GAD (LNC - U1231)"'

1. Phenotypic characterization of seven individuals with <scp>Marbach–Schaaf</scp> neurodevelopmental syndrome

2. Stepwise use of genomics and transcriptomics technologies increases diagnostic yield in Mendelian disorders

3. Retrotransposon insertion as a novel mutational cause of spinal muscular atrophy

4. Understanding the new BRD4-related syndrome: Clinical and genomic delineation with an international cohort study

5. Exome sequencing allows detection of relevant pharmacogenetic variants in epileptic patients

6. How to make a tongue: Cellular and molecular regulation of muscle and connective tissue formation during mammalian tongue development

7. NR2F1 regulates regional progenitor dynamics in the mouse neocortex and cortical gyrification in BBSOAS patients

8. De novo SMARCA2 variants clustered outside the helicase domain cause a new recognizable syndrome with intellectual disability and blepharophimosis distinct from Nicolaides-Baraitser syndrome

9. TBL1XR1 mutations in Pierpont syndrome are not restricted to the recurrent p.Tyr446Cys mutation

10. Mosaicism due to postzygotic mutations in women with focal dermal hypoplasia

11. Excess of de novo variants in genes involved in chromatin remodelling in patients with marfanoid habitus and intellectual disability

12. Associations between cognitive performance and the rehabilitation, medical care and social support provided to French children with Prader-Willi syndrome

13. Phenotypic spectrum associated with SPECC1L pathogenic variants: new families and critical review of the nosology of Teebi, Opitz GBBB, and Baraitser-Winter syndromes

14. A Recurrent De Novo PACS2 Heterozygous Missense Variant Causes Neonatal-Onset Developmental Epileptic Encephalopathy, Facial Dysmorphism, and Cerebellar Dysgenesis

15. De novo mutations in MSL3 cause an X-linked syndrome marked by impaired histone H4 lysine 16 acetylation

16. LARP7 variants and further delineation of the Alazami syndrome phenotypic spectrum among primordial dwarfisms: 2 sisters

17. Further delineation of the clinical spectrum of de novo TRIM8 truncating mutations

18. High Rate of Recurrent De Novo Mutations in Developmental and Epileptic Encephalopathies

19. Fifteen years of research on oral-facial-digital syndromes: from 1 to 16 causal genes

20. Postzygotic inactivating mutations of RHOA cause a mosaic neuroectodermal syndrome

21. Secondary findings from whole-exome/genome sequencing evaluating stakeholder perspectives. A review of the literature

22. Lysosomal Signaling Licenses Embryonic Stem Cell Differentiation via Inactivation of Tfe3

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22 results on '"Equipe GAD (LNC - U1231)"'

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