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1. Widening of the genetic and clinical spectrum of Lamb-Shaffer syndrome, a neurodevelopmental disorder due to SOX5 haploinsufficiency

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

2. Expanding the genetic and phenotypic relevance of KCNB1 variants in developmental and epileptic encephalopathies: 27 new patients and overview of the literature

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

3. Heterozygous Variants in KMT2E Cause a Spectrum of Neurodevelopmental Disorders and Epilepsy

Author: Anne H. O’Donnell-Luria, Lynn S. Pais, Víctor Faundes, Jordan C. Wood, Abigail Sveden, Victor Luria, Rami Abou Jamra, Andrea Accogli, Kimberly Amburgey, Britt Marie Anderlid, Silvia Azzarello-Burri, Alice A. Basinger, Claudia Bianchini, Lynne M. Bird, Rebecca Buchert, Wilfrid Carre, Sophia Ceulemans, Perrine Charles, Helen Cox, Lisa Culliton, Aurora Currò, Florence Demurger, James J. Dowling, Benedicte Duban-Bedu, Christèle Dubourg, Saga Elise Eiset, Luis F. Escobar, Alessandra Ferrarini, Tobias B. Haack, Mona Hashim, Solveig Heide, Katherine L. Helbig, Ingo Helbig, Raul Heredia, Delphine Héron, Bertrand Isidor, Amy R. Jonasson, Pascal Joset, Boris Keren, Fernando Kok, Hester Y. Kroes, Alinoë Lavillaureix, Xin Lu, Saskia M. Maas, Gustavo H.B. Maegawa, Carlo L.M. Marcelis, Paul R. Mark, Marcelo R. Masruha, Heather M. McLaughlin, Kirsty McWalter, Esther U. Melchinger, Saadet Mercimek-Andrews, Caroline Nava, Manuela Pendziwiat, Richard Person, Gian Paolo Ramelli, Luiza L.P. Ramos, Anita Rauch, Caitlin Reavey, Alessandra Renieri, Angelika Rieß, Amarilis Sanchez-Valle, Shifteh Sattar, Carol Saunders, Niklas Schwarz, Thomas Smol, Myriam Srour, Katharina Steindl, Steffen Syrbe, Jenny C. Taylor, Aida Telegrafi, Isabelle Thiffault, Doris A. Trauner, Helio van der Linden, Silvana van Koningsbruggen, Laurent Villard, Ida Vogel, Julie Vogt, Yvonne G. Weber, Ingrid M. Wentzensen, Elysa Widjaja, Jaroslav Zak, Samantha Baxter, Siddharth Banka, Lance H. Rodan, Jeremy F. McRae, Stephen Clayton, Tomas W. Fitzgerald, Joanna Kaplanis, Elena Prigmore, Diana Rajan, Alejandro Sifrim, Stuart Aitken, Nadia Akawi, Mohsan Alvi, Kirsty Ambridge, Daniel M. Barrett, Tanya Bayzetinova, Philip Jones, Wendy D. Jones, Daniel King, Netravathi Krishnappa, Laura E. Mason, Tarjinder Singh, Adrian R. Tivey, Munaza Ahmed, Uruj Anjum, Hayley Archer, Ruth Armstrong, Jana Awada, Meena Balasubramanian, Diana Baralle, Angela Barnicoat, Paul Batstone, David Baty, Chris Bennett, Jonathan Berg, Birgitta Bernhard, A. Paul Bevan, Maria Bitner-Glindzicz, Edward Blair, Moira Blyth, David Bohanna, Louise Bourdon, David Bourn, Lisa Bradley, Angela Brady, Simon Brent, Carole Brewer, Kate Brunstrom, David J. Bunyan, John Burn, Natalie Canham, Bruce Castle, Kate Chandler, Elena Chatzimichali, Deirdre Cilliers, Angus Clarke, Susan Clasper, Jill Clayton-Smith, Virginia Clowes, Andrea Coates, Trevor Cole, Irina Colgiu, Amanda Collins, Morag N. Collinson, Fiona Connell, Nicola Cooper, Lara Cresswell, Gareth Cross, Yanick Crow, Mariella D’Alessandro, Tabib Dabir, Rosemarie Davidson, Sally Davies, Dylan de Vries, John Dean, Charu Deshpande, Gemma Devlin, Abhijit Dixit, Angus Dobbie, Alan Donaldson, Dian Donnai, Deirdre Donnelly, Carina Donnelly, Angela Douglas, Sofia Douzgou, Alexis Duncan, Jacqueline Eason, Sian Ellard, Ian Ellis, Frances Elmslie, Karenza Evans, Sarah Everest, Tina Fendick, Richard Fisher, Frances Flinter, Nicola Foulds, Andrew Fry, Alan Fryer, Carol Gardiner, Lorraine Gaunt, Neeti Ghali, Richard Gibbons, Harinder Gill, Judith Goodship, David Goudie, Emma Gray, Andrew Green, Philip Greene, Lynn Greenhalgh, Susan Gribble, Rachel Harrison, Lucy Harrison, Victoria Harrison, Rose Hawkins, Liu He, Stephen Hellens, Alex Henderson, Sarah Hewitt, Lucy Hildyard, Emma Hobson, Simon Holden, Muriel Holder, Susan Holder, Georgina Hollingsworth, Tessa Homfray, Mervyn Humphreys, Jane Hurst, Ben Hutton, Stuart Ingram, Melita Irving, Lily Islam, Andrew Jackson, Joanna Jarvis, Lucy Jenkins, Diana Johnson, Elizabeth Jones, Dragana Josifova, Shelagh Joss, Beckie Kaemba, Sandra Kazembe, Rosemary Kelsell, Bronwyn Kerr, Helen Kingston, Usha Kini, Esther Kinning, Gail Kirby, Claire Kirk, Emma Kivuva, Alison Kraus, Dhavendra Kumar, V. K. Ajith Kumar, Katherine Lachlan, Wayne Lam, Anne Lampe, Caroline Langman, Melissa Lees, Derek Lim, Cheryl Longman, Gordon Lowther, Sally A. Lynch, Alex Magee, Eddy Maher, Alison Male, Sahar Mansour, Karen Marks, Katherine Martin, Una Maye, Emma McCann, Vivienne McConnell, Meriel McEntagart, Ruth McGowan, Kirsten McKay, Shane McKee, Dominic J. McMullan, Susan McNerlan, Catherine McWilliam, Sarju Mehta, Kay Metcalfe, Anna Middleton, Zosia Miedzybrodzka, Emma Miles, Shehla Mohammed, Tara Montgomery, David Moore, Sian Morgan, Jenny Morton, Hood Mugalaasi, Victoria Murday, Helen Murphy, Swati Naik, Andrea Nemeth, Louise Nevitt, Ruth Newbury-Ecob, Andrew Norman, Rosie O’Shea, Caroline Ogilvie, Kai-Ren Ong, Soo-Mi Park, Michael J. Parker, Chirag Patel, Joan Paterson, Stewart Payne, Daniel Perrett, Julie Phipps, Daniela T. Pilz, Martin Pollard, Caroline Pottinger, Joanna Poulton, Norman Pratt, Katrina Prescott, Sue Price, Abigail Pridham, Annie Procter, Hellen Purnell, Oliver Quarrell, Nicola Ragge, Raheleh Rahbari, Josh Randall, Julia Rankin, Lucy Raymond, Debbie Rice, Leema Robert, Eileen Roberts, Jonathan Roberts, Paul Roberts, Gillian Roberts, Alison Ross, Elisabeth Rosser, Anand Saggar, Shalaka Samant, Julian Sampson, Richard Sandford, Ajoy Sarkar, Susann Schweiger, Richard Scott, Ingrid Scurr, Ann Selby, Anneke Seller, Cheryl Sequeira, Nora Shannon, Saba Sharif, Charles Shaw-Smith, Emma Shearing, Debbie Shears, Eamonn Sheridan, Ingrid Simonic, Roldan Singzon, Zara Skitt, Audrey Smith, Kath Smith, Sarah Smithson, Linda Sneddon, Miranda Splitt, Miranda Squires, Fiona Stewart, Helen Stewart, Volker Straub, Mohnish Suri, Vivienne Sutton, Ganesh Jawahar Swaminathan, Elizabeth Sweeney, Kate Tatton-Brown, Cat Taylor, Rohan Taylor, Mark Tein, I. Karen Temple, Jenny Thomson, Marc Tischkowitz, Susan Tomkins, Audrey Torokwa, Becky Treacy, Claire Turner, Peter Turnpenny, Carolyn Tysoe, Anthony Vandersteen, Vinod Varghese, Pradeep Vasudevan, Parthiban Vijayarangakannan, Emma Wakeling, Sarah Wallwark, Jonathon Waters, Astrid Weber, Diana Wellesley, Margo Whiteford, Sara Widaa, Sarah Wilcox, Emily Wilkinson, Denise Williams, Nicola Williams, Louise Wilson, Geoff Woods, Christopher Wragg, Michael Wright, Laura Yates, Michael Yau, Chris Nellåker, Michael Parker, Helen V. Firth, Caroline F. Wright, David R. FitzPatrick, Jeffrey C. Barrett, Matthew E. Hurles, Department of Medicine 1, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Center for Medical Genetics, Istituto di Scienze e Tecnologie della Cognizione, Consiglio Nazionale delle Ricerche (ISTC, CNR), Istituto di Scienze e Tecnologie della Cognizione, Station biologique de Roscoff [Roscoff] (SBR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Génétique médicale [Centre Hospitalier de Vannes], Centre hospitalier Bretagne Atlantique (Morbihan) (CHBA), Department of Pediatrics, University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Centre de Génétique Chromosomique [Hôpital Saint Vincent de Paul], Hôpital Saint Vincent de Paul-Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), 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 ), Service de génétique médicale, Centre Hospitalier Universitaire Vaudois [Lausanne] (CHUV), Institute of Human Genetics, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM)-Helmholtz Zentrum München = German Research Center for Environmental Health, Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme (GRC), Université Pierre et Marie Curie - Paris 6 (UPMC), Children’s Hospital of Philadelphia (CHOP ), Service de Génétique Médicale, Centre hospitalier universitaire de Nantes (CHU Nantes), Department of Public Health Sciences, Karolinska Institutet [Stockholm], Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Baylor University-Baylor University, Institute of Medical Genetics, Universität Zürich [Zürich] = University of Zurich (UZH), Università degli Studi di Camerino = University of Camerino (UNICAM), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), University of Oxford, GeneDx [Gaithersburg, MD, USA], Department of Clinical Genetics (Academic Medical Center, University of Amsterdam), VU University Medical Center [Amsterdam], 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), Department of Clinical Genetics, Aarhus University Hospital, Boston Children's Hospital, Wellcome Trust Genome Campus, The Wellcome Trust Sanger Institute [Cambridge], Institute of Biomedical Engineering [Oxford] (IBME), Climatic Research Unit, University of East Anglia [Norwich] (UEA), Imperial College London, St Mary's Hospital, East Anglian Medical Genetics Service, Cytogenetics Laboratory, Addenbrooke's Hospital, Sheffield Children's NHS Foundation Trust, Regional Genetic Service, St Mary's Hospital, Manchester, Genetics, University of Southampton, Great Ormond Street Hospital for Children [London] (GOSH), Yorkshire Regional Clinical Genetics Service, Chapel Allerton Hospital, Molecular and Clinical Medicine [Dundee, UK] (School of Medicine), University of Dundee [UK]-Ninewells Hospital & Medical School [Dundee, UK], Department of Clinical Genetics, Oxford Regional Genetics Service, The Churchill hospital, North West Thames Regional Genetics, Northwick Park Hospital, Royal Devon & Exeter Hospital, Wessex Clinical Genetics Service, Wessex clinical genetics service, Manchester University NHS Foundation Trust (MFT), West Midlands Regional Genetics Service, Birmingham Women's and Children's NHS Foundation Trust, Our Lady's hospital for Sick Children, Our Lady's Hospital for Sick Children, Guy's Hospital [London], University Hospitals Leicester, University of Edinburgh, Belfast City Hospital, Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Institute of Medical Genetics, Heath Park, Cardiff, The London Clinic, Nottingham City Hospital, Clinical Genetics Department, St Michael's Hospital, Department of Genetic Medicine, Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust (NUH), Royal Devon and Exeter Foundation Trust, Histopathology, St. George's Hospital, Teesside Genetics Unit, James Cook University (JCU), Kansas State University, Liverpool Women's NHS Foundation Trust, Department of Medical Genetics, HMNC Brain Health, North West Thames Regional Genetics Service, Northwick Park Hospital, Harrow, Leicester Royal Infirmary, University Hospitals Leicester-University Hospitals Leicester, Ninewells Hospital and Medical School [Dundee], Academic Centre on Rare Diseases (ACoRD), University College Dublin [Dublin] (UCD), Oxford Brookes University, Institute of medicinal plant development, Chinese Academy of Medical Sciences, Newcastle Upon Tyne Hospitals NHS Trust, Service d'explorations fonctionnelles respiratoires [Lille], Department of Computer Science - Trinity College Dublin, University of Dublin, Department of Clinical Genetics (Sheffield Children’s NHS Foundation Trust), Division of Medical & Molecular Genetics, NHS Greater Glasgow & Clyde [Glasgow] (NHSGGC), Department of Clinical Genetics [Churchill Hospital], Churchill Hospital Oxford Centre for Haematology, Weizmann Institute of Science [Rehovot, Israël], Southampton General Hospital, Western General Hospital, Head of the Department of Medical Genetics, University of Birmingham [Birmingham], SW Thames Regional Genetics Service, St Georgeâ™s University of London, London, Institut Cochin (IC UM3 (UMR 8104 / U1016)), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), All Wales Medical Genetics Services, Singleton Hospital, Central Manchester University Hospitals NHS Foundation Trust, University of North Texas (UNT), Clinical Genetics, Northern Genetics Service, Newcastle University [Newcastle], United Kingdom Met Office [Exeter], Institute of Medical Genetics (University Hospital of Wales), University Hospital of Wales (UHW), West Midlands Regional Genetics Laboratory and Clinical Genetics Unit, Birmingham Women's Hospital, Laboratory of Molecular Genetics, National Institute of Child Health and Human Development, National Institutes of Health, Department of Genetics, Cell- and Immunobiology, Semmelweis University, University Hospitals Bristol, Marketing (MKT), EESC-GEM Grenoble Ecole de Management, Addenbrookes Hospital, West of Scotland Genetics Service (Queen Elizabeth University Hospital), University Hospital Birmingham Queen Elizabeth, Department of Clnical Genetics, Chapel Allerton Hospital, Department of Clinical Genetics, Northampton General Hospital, Northampton, Royal Devon and Exeter Hospital [Exeter, UK] (RDEH), Guy's and St Thomas' Hospital [London], School of Computer Science, Bangor University, University Hospital Southampton, Clinical Genetics Unit, St Georges, University of London, Medical Genetics, Cardiff University, Research and Development, Futurelab, Nottingham Regional Genetics Service [Nottingham, UK], Nottingham University Hospitals NHS Trust (NUH)-City Hospital Campus [Nottingham, UK], University of St Andrews [Scotland], Clinical Genetics Service, Nottingham University Hospitals NHS Trust - City Hospital Campus, West Midlands Regional Genetics Unit, Department of Neurology, Johns Hopkins University (JHU), Oxford University Hospitals NHS Trust, St James's University Hospital, Leeds Teaching Hospitals NHS Trust, Addenbrooke's Hospital, Cambridge University NHS Trust, Institute of Human Genetics, Newcastle, Division of Biological Stress Response [Amsterdam, The Netherlands], The Netherlands Cancer Institute [Amsterdam, The Netherlands], Johns Hopkins Bloomberg School of Public Health [Baltimore], Birmingham Women’s Hospital, Department of Genetics, Portuguese Oncology Institute, Molecular Genetics, IWK Health Centre, IWK health centre, North West london hospitals NHS Trust, Department of Clinical Genetics (Queen Elizabeth University Hospital, Glasgow), Queen Elizabeth University Hospital (Glasgow), Birmingham women's hospital, Birmingham, Ethox Centre, Department of Public Health and Primary Health Care, University of Oxford, Badenoch Building, Old Road Campus, Headington, R01 HD091846, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Human Genome Research Institute, National Institutes of Health’s National Institute of Child Health and Human Development, Boston Children’s Hospital Faculty Development Fellowship, UM1HG008900, Broad Center for Mendelian Genomics, Chile’s National Commission for Scientific and Technological Research, DFG WE4896/3-1, German Research Society, WT 100127, Health Innovation Challenge Fund, Comprehensive Clinical Research Network, Skaggs-Oxford Scholarship, 10/H0305/83, Cambridge South REC, REC GEN/284/12, Republic of Ireland, WT098051, Wellcome Sanger Institute, 72160007, Comisión Nacional de Investigación Científica y Tecnológica, Children's Hospital of Philadelphia, Technische Universität Kaiserslautern, 1DH1813319, Dietmar Hopp Stiftung, National Institute for Health Research, Department of Health & Social Care, Service de neurologie 1 [CHU Pitié-Salpétrière], 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), Hôpital Saint Vincent de Paul-GHICL, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM)-Helmholtz-Zentrum München (HZM)-German Research Center for Environmental Health, Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Università degli Studi di Camerino (UNICAM), University of Oxford [Oxford], Institut National de la Santé et de la Recherche Médicale (INSERM)-Aix Marseille Université (AMU), Nottingham University Hospitals NHS Trust, Nottingham University Hospitals, SW Thames Regional Genetics Service, St Georgeâ™s University of London, London, University Hospital of Wales, Grenoble Ecole de Management, Royal Devon and Exeter Hospital, City Hospital Campus [Nottingham, UK]-Nottingham University Hospitals NHS Trust [UK], ANS - Complex Trait Genetics, Human Genetics, ARD - Amsterdam Reproduction and Development, ACS - Pulmonary hypertension & thrombosis, Service de Neurologie [CHU Pitié-Salpêtrière], IFR70-CHU Pitié-Salpêtrière [AP-HP], GHICL-Hôpital Saint Vincent de Paul, Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Friedrich-Alexander d'Erlangen-Nuremberg, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Centre Hospitalier Bretagne Atlantique [Vannes], Technische Universität München [München] (TUM)-Helmholtz-Zentrum München (HZM)-German Research Center for Environmental Health, Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], University of Zürich [Zürich] (UZH), Università di Camerino (UNICAM), Birmingham Women's Hospital Healthcare NHS Trust, University Hospitals of Leicester, Sheffield Children’s Hospital, Weizmann Institute of Science, and Grenoble Ecole de Management (GEM)
Subjects: 0301 basic medicine, Male, Microcephaly, [SDV]Life Sciences [q-bio], Haploinsufficiency, autism, epilepsy, epileptic encephalopathy, global developmental delay, H3K4 methylation, intellectual disability, KMT2E, neurodevelopmental disorder, Adolescent, Adult, Child, Child, Preschool, DNA-Binding Proteins, Epilepsy, Female, Humans, Infant, Neurodevelopmental Disorders, Pedigree, Phenotype, Young Adult, Genetic Variation, Heterozygote, 0302 clinical medicine, Neurodevelopmental disorder, Intellectual disability, Global developmental delay, Genetics (clinical), ComputingMilieux_MISCELLANEOUS, Genetics, 0303 health sciences, Hypotonia, 030220 oncology & carcinogenesis, medicine.symptom, Rare cancers Radboud Institute for Health Sciences [Radboudumc 9], 03 medical and health sciences, Report, medicine, Journal Article, Expressivity (genetics), Preschool, 030304 developmental biology, [SDV.GEN]Life Sciences [q-bio]/Genetics, business.industry, Macrocephaly, medicine.disease, 030104 developmental biology, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Autism, business, 030217 neurology & neurosurgery
Abstract: Contains fulltext : 206572.pdf (Publisher’s version ) (Open Access) We delineate a KMT2E-related neurodevelopmental disorder on the basis of 38 individuals in 36 families. This study includes 31 distinct heterozygous variants in KMT2E (28 ascertained from Matchmaker Exchange and three previously reported), and four individuals with chromosome 7q22.2-22.23 microdeletions encompassing KMT2E (one previously reported). Almost all variants occurred de novo, and most were truncating. Most affected individuals with protein-truncating variants presented with mild intellectual disability. One-quarter of individuals met criteria for autism. Additional common features include macrocephaly, hypotonia, functional gastrointestinal abnormalities, and a subtle facial gestalt. Epilepsy was present in about one-fifth of individuals with truncating variants and was responsive to treatment with anti-epileptic medications in almost all. More than 70% of the individuals were male, and expressivity was variable by sex; epilepsy was more common in females and autism more common in males. The four individuals with microdeletions encompassing KMT2E generally presented similarly to those with truncating variants, but the degree of developmental delay was greater. The group of four individuals with missense variants in KMT2E presented with the most severe developmental delays. Epilepsy was present in all individuals with missense variants, often manifesting as treatment-resistant infantile epileptic encephalopathy. Microcephaly was also common in this group. Haploinsufficiency versus gain-of-function or dominant-negative effects specific to these missense variants in KMT2E might explain this divergence in phenotype, but requires independent validation. Disruptive variants in KMT2E are an under-recognized cause of neurodevelopmental abnormalities.
Published: 2019

4. Expanding the Phenotype Associated with NAA10-Related N-Terminal Acetylation Deficiency

Author: Alice Masurel, Yannis Duffourd, Bénédicte Gérard, Christiane Zweier, Thomas Arnesen, Bernt Popp, Melissa P. Wasserstein, Cyril Mignot, Nicholas AhMew, Laetitia Lampert, Boris Keren, Jean Baptiste Rivière, Caroline Nava, Laurence Faivre, Chloé Saunier, Marjon van Slegtenhorst, Paul Kuentz, Christel Thauvin-Robinet, Marina Blenski, Svein Isungset Støve, Paula Goldenberg, Amélie Piton, André Reis, Julien Thevenon, Frédéric Huet, Ange Line Bruel, Grazia M.S. Mancini, Kamer Tezcan, Charlotte de Bie, Bruno Leheup, Bertrand Isidor, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Service de pédiatrie (CHU de Dijon), Department of Molecular Biology, University of Bergen ( UIB ), Dpt of Surgery [Bergen], Haukeland University Hospital, Friedrich-Alexander Universität Erlangen-Nürnberg ( FAU ), Laboratoire de Génétique Moléculaire [CHRU Strasbourg], CHRU Strasbourg, Division of Genetics & Metabolism, Children's National Medical Center, Dpt of Genetics [Utrecht], UMC Utrecht, Massachusetts General Hospital [Boston] ( MGH ), Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes ( UN ) -Centre hospitalier universitaire de Nantes ( CHU Nantes ), Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Pitié-Salpêtrière [APHP], Université Pierre et Marie Curie - Paris 6 ( UPMC ), Service de Génétique Médicale [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy ( CHRU Nancy ), Nutrition-Génétique et Exposition aux Risques Environnementaux ( NGERE ), Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université de Lorraine ( UL ), Centre de Référence des Déficiences Intellectuelles de Causes Rares, Kaiser Permanente, ErasmusMC University Medical Center Rotterdam, Dpts of Genetics and Genomic Sciences and Pediatrics [New York], Icahn School of Medicine at Mount Sinai [New York], Université de Bourgogne ( UB ), Génétique des Anomalies du Développement ( GAD ), Université de Bourgogne ( UB ) -IFR100 - Structure fédérative de recherche Santé-STIC, Laboratoire de Génétique Moléculaire, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), University of Bergen (UiB), University of Bergen (UiB)-University of Bergen (UiB), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), University Medical Center [Utrecht], Massachusetts General Hospital [Boston], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Université Pierre et Marie Curie - Paris 6 (UPMC), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Nutrition-Génétique et Exposition aux Risques Environnementaux (NGERE), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Erasmus University Medical Center [Rotterdam] (Erasmus MC), Icahn School of Medicine at Mount Sinai [New York] (MSSM), Université de Bourgogne (UB), Génétique des Anomalies du Développement (GAD), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Laboratoire de génétique moléculaire (hôpital général, CHU Dijon), Hôpital général (CHU Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), IFR100 - Structure fédérative de recherche Santé-STIC-Université de Bourgogne (UB), and Clinical Genetics
Subjects: 0301 basic medicine, Male, Models, Molecular, Microcephaly, Mutation, Missense, Biology, Germline, KEY WORDS: NAA10, 03 medical and health sciences, Germline mutation, Genes, X-Linked, Intellectual disability, Genetics, medicine, Missense mutation, Humans, Genetic Predisposition to Disease, N-Terminal Acetyltransferase E, Genetics (clinical), Genetic Association Studies, Germ-Line Mutation, N-Terminal Acetyltransferase A, Research Articles, X-linked, [SDV.GEN]Life Sciences [q-bio]/Genetics, Regional Council of Burgundy, Mosaicism, N-terminal acetylation, Acetylation, medicine.disease, Phenotype, Pedigree, Ogden Syndrome, X‐linked, 030104 developmental biology, NAA10, intellectual disability, N‐terminal acetylation, Contract grant sponsors: Dijon University Hospital, Female, [ SDV.GEN ] Life Sciences [q-bio]/Genetics, NAA15, Research Article
Abstract: International audience; N-terminal acetylation is a common protein modification in eukaryotes associated with numerous cellular processes. Inherited mutations in NAA10, encoding the catalytic subunit of the major N-terminal acetylation complex NatA have been associated with diverse, syndromic X-linked recessive disorders, whereas de novo missense mutations have been reported in one male and one female individual with severe intellectual disability but otherwise unspecific phenotypes. Thus, the full genetic and clinical spectrum of NAA10 deficiency is yet to be delineated. We identified three different novel and one known missense mutation in NAA10, de novo in 11 females, and due to maternal germ line mosaicism in another girl and her more severely affected and deceased brother. In vitro enzymatic assays for the novel, recurrent mutations p.(Arg83Cys) and p.(Phe128Leu) revealed reduced catalytic activity. X-inactivation was random in five females. The core phenotype of X-linked NAA10-related N-terminal-acetyltransferase deficiency in both males and females includes developmental delay, severe intellectual disability, postnatal growth failure with severe microcephaly, and skeletal or cardiac anomalies. Genotype–phenotype correlations within and between both genders are complex and may include various factors such as location and nature of mutations, enzymatic stability and activity, and X-inactivation in females.
Published: 2016

5. Mutations in DCC cause isolated agenesis of the corpus callosum with incomplete penetrance

Author: Amélie Piton, Melanie Bahlo, Paul J. Lockhart, Vesna Lukic, Caroline Nava, David J. Amor, Pierre Bitoun, Vicki Anderson, Fabien Lesne, Greta Gillies, Amanda G. Wood, Justine Guegan, Gail Robinson, Catherine Garel, Alexis Brice, Sarah E.M. Stephenson, Guy A. Rouleau, Aurélie Méneret, Delphine Héron, Kate Pope, Solveig Heide, Cyril Mignot, Emmanuel Roze, Angélique Quartier, Jean-Louis Mandel, Annalisa Paolino, Quentin Welniarz, Sylvie Odent, Florence Riant, George McGillivray, Linda J. Richards, Ilan Gobius, Elliott H. Sherr, Tania Attié-Bitach, Charles A. Galea, Timothy J. Edwards, Myriam Srour, Megan Spencer-Smith, Oriane Trouillard, Laura Morcom, Boris Keren, Christel Depienne, Marie Laure Moutard, Anne Faudet, Richard J. Leventer, Alissandra McIlroy, Agnès Rastetter, Thierry Billette de Villemeur, Simone Mandelstam, Jens Bunt, Martin B. Delatycki, Rick M. Tankard, Ashley P L Marsh, CHU Pitié-Salpêtrière [APHP], Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme (GRC), Université Pierre et Marie Curie - Paris 6 (UPMC), Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [APHP], CHU Trousseau [APHP], Service de Pédiatrie [Jean Verdier], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Université Paris 13 (UP13)-Hôpital Jean Verdier [Bondy], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Service de Radiologie Pédiatrique, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Trousseau [APHP], Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Service de génétique clinique [Rennes], Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-CHU Pontchaillou [Rennes]-Hôpital Sud, Neuroscience Paris Seine (NPS), Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC), Montreal Neurological Hospital, McGill University Health Center [Montreal] (MUHC), CHU Necker - Enfants Malades [AP-HP], 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), Laboratoire de Diagnostic Génétique, CHU Strasbourg-Hopital Civil, Service des Maladies du Système Nerveux [CHU Pitié-Salpêtrière], Laboratoire de Génétique Moléculaire [CHRU Strasbourg], CHRU Strasbourg, Bioinformatics division, The Walter & Eliza Hall Institute of Medical Research, Neuroprotection du Cerveau en Développement / Promoting Research Oriented Towards Early Cns Therapies (PROTECT), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de génétique, cytogénétique, embryologie [Pitié-Salpétrière], Université Pierre et Marie Curie - Paris 6 (UPMC)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [APHP]-Centre National de la Recherche Scientifique (CNRS), 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 Pitié-Salpêtrière [APHP]-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Université Pierre et Marie Curie - Paris 6 (UPMC), 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)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris 13 (UP13)-Hôpital Jean Verdier [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), 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), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-CHU Pontchaillou [Rennes]-hôpital Sud, Neurosciences Paris Seine (NPS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Biologie Paris Seine (IBPS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Collège de France (CdF (institution)), 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), 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), 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), Centre de Référence des Déficiences Intellectuelles de Causes Rares, Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Pitié-Salpêtrière [APHP], Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme ( GRC ), Université Pierre et Marie Curie - Paris 6 ( UPMC ), 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 ), Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute ( ICM ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ) -CHU Pitié-Salpêtrière [APHP], Assistance publique - Hôpitaux de Paris (AP-HP)-Université Paris 13 ( UP13 ) -Hôpital Jean Verdier, Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Trousseau [APHP], Institut de Génétique et Développement de Rennes ( IGDR ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Centre National de la Recherche Scientifique ( CNRS ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -CHU Pontchaillou [Rennes]-Hôpital Sud, Neuroscience Paris Seine ( NPS ), Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), McGill University Health Center [Montreal, Canada] ( MUHC ), 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 ), Neuroprotection du Cerveau en Développement ( PROTECT ), Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 ( UPD7 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), CHU Pitié-Salpêtrière [APHP]-Assistance publique - Hôpitaux de Paris (AP-HP)-Université Pierre et Marie Curie - Paris 6 ( UPMC ), Université Paris 13 (UP13)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Jean Verdier [AP-HP], 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 Rennes (UR)-CHU Pontchaillou [Rennes]-hôpital Sud, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Biologie Paris Seine (IBPS), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Male, 0301 basic medicine, Developmental Disabilities, Penetrance, Receptors, Cell Surface, Biology, Nervous System Malformations, Corpus callosum, medicine.disease_cause, Mirror movements, Article, Corpus Callosum, 03 medical and health sciences, 0302 clinical medicine, Neural Stem Cells, Netrin, Intellectual disability, Genetics, medicine, Humans, Abnormalities, Multiple, Family, 10. No inequality, Agenesis of the corpus callosum, Mutation, [SDV.GEN]Life Sciences [q-bio]/Genetics, Tumor Suppressor Proteins, Brain, DCC Receptor, medicine.disease, Phenotype, 030104 developmental biology, nervous system, Female, Agenesis of Corpus Callosum, [ SDV.GEN ] Life Sciences [q-bio]/Genetics, 030217 neurology & neurosurgery
Abstract: International audience; Brain malformations involving the corpus callosum are common in children with developmental disabilities. We identified DCC mutations in four families and five sporadic individuals with isolated agenesis of the corpus callosum (ACC) without intellectual disability. DCC mutations result in variable dominant phenotypes with decreased penetrance, including mirror movements and ACC associated with a favorable developmental prognosis. Possible phenotypic modifiers include the type and location of mutation and the sex of the individual.
Published: 2017

6. Genetic and phenotypic dissection of 1q43q44 microdeletion syndrome and neurodevelopmental phenotypes associated with mutations in ZBTB18 and HNRNPU

Author: Depienne, Christel, Nava, Caroline, Keren, Boris, Heide, Solveig, Rastetter, Agnès, Passemard, Sandrine, Chantot-Bastaraud, Sandra, Moutard, Marie-Laure, Agrawal, Pankaj B., VanNoy, Grace, Stoler, Joan M., Amor, David J., Villemeur, Thierry, Doummar, Diane, Alby, Caroline, Cormier-Daire, Valérie, Garel, Catherine, Marzin, Pauline, Scheidecker, Sophie, De Saint-Martin, Anne, Hirsch, Edouard, Korff, Christian, Bottani, Armand, Faivre, Laurence, Verloes, Alain, Orzechowski, Christine, Burglen, Lydie, Leheup, Bruno, Roume, Joëlle, Andrieux, Joris, Sheth, Frenny, Datar, Chaitanya, Parker, Michael J., Pasquier, Laurent, Odent, Sylvie, Naudion, Sophie, Delrue, Marie-Ange, Le Caignec, Cédric, Vincent, Marie, Isidor, Bertrand, Renaldo, Florence, Stewart, Fiona, Toutain, Annick, Koehler, Udo, Häckl, Birgit, Stülpnagel, Celina, Kluger, Gerhard, Møller, Rikke S., Pal, Deb, Jonson, Tord, Soller, Maria, Verbeek, Nienke E., Haelst, Mieke M., Kovel, Carolien, Koeleman, Bobby, Monroe, Glen, Haaften, Gijs, Study, DDD, Attie-Bitach, Tania, Boutaud, Lucile, Héron, Delphine, Mignot, Cyril, CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), 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), 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), Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme (GRC), Université Pierre et Marie Curie - Paris 6 (UPMC), 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), Unité de Neurologie, Hôpital Robert Debré, CHU Trousseau [APHP], Imagine - Institut des maladies génétiques (IMAGINE - U1163), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de Neurologie [Strasbourg], CHU Strasbourg-Hopital Civil, Dpt de l'Enfant et de l'Adolescent, Neuropédiatrie [Genève], Hôpitaux Universitaires de Genève (HUG), Génétique médicale, Génétique des Anomalies du Développement (GAD), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Physiopathologie et neuroprotection des atteintes du cerveau en développement, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de génétique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Service de Génétique Médicale [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Service de Génétique, Hôpital Poissy-saint Germain, Laboratoire de Génétique Clinique, Hôpital Jeanne de Flandre [Lille]-Université de Lille, Droit et Santé-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Service de génétique clinique [Rennes], Université de Rennes (UR)-CHU Pontchaillou [Rennes]-hôpital Sud, 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 ), Maladies Rares - Génétique et Métabolisme (MRGM), Université Bordeaux Segalen - Bordeaux 2-Hôpital Pellegrin-Service de Génétique Médicale du CHU de Bordeaux, Centre hospitalier universitaire de Nantes (CHU Nantes), Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), Physiopathologie des Adaptations Nutritionnelles (PhAN), Institut National de la Recherche Agronomique (INRA)-Université de Nantes (UN), Service de neurologie pédiatrique et maladies métaboliques, Service de génétique [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Imagerie et cerveau (iBrain - Inserm U1253 - UNIV Tours ), Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hospital for Neuropediatrics and Neurological Rehabilitation, Epilepsy Center for Children and Adolescents, Paracelsus Medizinische Privatuniversität = Paracelsus Medical University (PMU), Department of Clinical Genetics, Lund University Hospital, CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), PO81260, Assistance Publique - Hôpitaux de Paris, FdF—Engt n°15144, Fondation de France, Agence Nationale de la Recherche, INSERM, Agence de la Biomédecine, Fondation pour la Recherche Médicale, HTS-RD-2011, Fondation Maladies Rares, ANR-10-IAIHU-06, Investissements d’Avenir, ANR-10-IAHU-0006,IHU-A-ICM,Institut de Neurosciences Translationnelles de Paris(2010), Service de génétique, cytogénétique, embryologie [Pitié-Salpétrière], 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), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], 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 de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-CHU Pontchaillou [Rennes]-hôpital Sud, Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Hôpital Bretonneau-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Université Pierre et Marie Curie - Paris 6 (UPMC)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [APHP], Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de Génétique et d'Embryologie Médicale, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Trousseau [APHP], Service de neuropédiatrie [Trousseau], Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de Radiologie Pédiatrique, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Service de neuropédiatrie et pathologie du développement, Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-CHU Pontchaillou [Rennes]-Hôpital Sud, Physiopathologie de la Résorption Osseuse et Thérapie des Tumeurs Osseuses Primitives, Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Paris Diderot - Paris 7 (UPD7)-Hôpital Robert Debré-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP), Imagerie et cerveau, Université de Tours-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pitié-Salpêtrière [APHP], CHU Pitié-Salpêtrière [APHP]-Assistance publique - Hôpitaux de Paris (AP-HP)-Université Pierre et Marie Curie - Paris 6 ( UPMC ), Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute ( ICM ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ) -CHU Pitié-Salpêtrière [APHP], 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 ), Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Pitié-Salpêtrière [APHP], Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme ( GRC ), Université Pierre et Marie Curie - Paris 6 ( UPMC ), Promoting Research Oriented Towards Early Cns Therapies ( PROTECT ), Université Paris Diderot - Paris 7 ( UPD7 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Trousseau [APHP], Imagine - Institut des maladies génétiques ( IMAGINE - U1163 ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Hôpitaux Universitaires de Genève ( HUG ), Génétique des Anomalies du Développement ( GAD ), Université de Bourgogne ( UB ) -IFR100 - Structure fédérative de recherche Santé-STIC, Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 ( UPD7 ), Neuroprotection du Cerveau en Développement ( PROTECT ), Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 ( UPD7 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Centre Hospitalier Régional Universitaire de Nancy ( CHRU Nancy ), Hôpital Jeanne de Flandre [Lille]-Université de Lille, Droit et Santé-Centre Hospitalier Régional Universitaire [Lille] ( CHRU Lille ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -CHU Pontchaillou [Rennes]-Hôpital Sud, Institut de Génétique et Développement de Rennes ( IGDR ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Centre National de la Recherche Scientifique ( CNRS ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Maladies Rares - Génétique et Métabolisme ( MRGM ), Centre hospitalier universitaire de Nantes ( CHU Nantes ), Université de Nantes ( UN ) -Centre hospitalier universitaire de Nantes ( CHU Nantes ), Université de Nantes ( UN ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Hôpital Bretonneau-CHRU Tours, Université de Tours-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Paracelsus Private Medical University Salzburg, Centre de Référence des Déficiences Intellectuelles de Causes Rares, Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Pitié-Salpêtrière [APHP], 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 ), and IFR100 - Structure fédérative de recherche Santé-STIC-Université de Bourgogne (UB)
Subjects: [SDV.GEN]Life Sciences [q-bio]/Genetics, Repressor Proteins/genetics, ddc:618, Neurodevelopmental Disorders/genetics, Heterogeneous-Nuclear Ribonucleoproteins/genetics, Heterogeneous-Nuclear Ribonucleoproteins, Chromosomes, Repressor Proteins, Phenotype, Chromosomes, Human, Pair 1, Neurodevelopmental Disorders, Mutation, Genetics, Pair 1, Humans, Genetics(clinical), Chromosome Deletion, [ SDV.GEN ] Life Sciences [q-bio]/Genetics, Original Investigation, Human
Abstract: Subtelomeric 1q43q44 microdeletions cause a syndrome associating intellectual disability, microcephaly, seizures and anomalies of the corpus callosum. Despite several previous studies assessing genotype-phenotype correlations, the contribution of genes located in this region to the specific features of this syndrome remains uncertain. Among those, three genes, AKT3, HNRNPU and ZBTB18 are highly expressed in the brain and point mutations in these genes have been recently identified in children with neurodevelopmental phenotypes. In this study, we report the clinical and molecular data from 17 patients with 1q43q44 microdeletions, four with ZBTB18 mutations and seven with HNRNPU mutations, and review additional data from 37 previously published patients with 1q43q44 microdeletions. We compare clinical data of patients with 1q43q44 microdeletions with those of patients with point mutations in HNRNPU and ZBTB18 to assess the contribution of each gene as well as the possibility of epistasis between genes. Our study demonstrates that AKT3 haploinsufficiency is the main driver for microcephaly, whereas HNRNPU alteration mostly drives epilepsy and determines the degree of intellectual disability. ZBTB18 deletions or mutations are associated with variable corpus callosum anomalies with an incomplete penetrance. ZBTB18 may also contribute to microcephaly and HNRNPU to thin corpus callosum, but with a lower penetrance. Co-deletion of contiguous genes has additive effects. Our results confirm and refine the complex genotype-phenotype correlations existing in the 1qter microdeletion syndrome and define more precisely the neurodevelopmental phenotypes associated with genetic alterations of AKT3, ZBTB18 and HNRNPU in humans. Electronic supplementary material The online version of this article (doi:10.1007/s00439-017-1772-0) contains supplementary material, which is available to authorized users.
Published: 2017

7. Human Pluripotent Stem Cell-derived Cortical Neurons for High Throughput Medication Screening in Autism: A Proof of Concept Study in SHANK3 Haploinsufficiency Syndrome

Author: Aurélie Poulet, Alexandra Benchoua, Richard Delorme, Laure Chatrousse, Francis Cogé, Delphine Héron, Frédérique Rodet-Amsellem, Millan Mark, Claire Boissart, Thomas Bourgeron, Hélène Darville, Anselme L. Perrier, Caroline Nava, Julie Pernelle, Margot Jarrige, Marc Peschanski, Institut des cellules souches pour le traitement et l'étude des maladies monogéniques (I-STEM), Université d'Évry-Val-d'Essonne (UEVE)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Généthon, French Biodiversity Agency, Service psychiatrique de l'enfant et de l'adolescent [CHU Hôpital Robert Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré, Hydrosystèmes et Bioprocédés (UR HBAN), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme (GRC), Université Pierre et Marie Curie - Paris 6 (UPMC), 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), Division of General Internal Medicine (DGIM), Université de Genève = University of Geneva (UNIGE), Institut de Recherche Servier, SERVIER, Génétique humaine et fonctions cognitives - Human Genetics and Cognitive Functions (GHFC (UMR_3571 / U-Pasteur_1)), Institut Pasteur [Paris] (IP)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut Pasteur [Paris] (IP), AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), This study has been in part funded by grants from 'Investissements d'Avenir' – (ANR-11-INBS-0009 - INGESTEM – and ANR-11-INBS-0011 - NeurATRIS), the French National Research Agency ANR (ANR-13-SAMA-0006, SynDivAutism), the Laboratory of Excellence GENMED (ANR-10-LABX-0013), the Bettencourt-Schueller Foundation, the Cognacq Jay Foundation, and the Fondamental Foundation. This study used samples from the NINDS Human Genetics Resource Center DNA and Cell Line Repository, as well as clinical data. NINDS Repository sample numbers corresponding to the samples used are GM 1869., The authors are thankful to I-Stem's HTS platform staff for constant technical support. We thank the cell bank of Pitié-Salpétrière hospital and the Clinical Investigation Center of Robert Debré hospital for assistance with patient recruitment, information, sampling and fibroblast preparation. H.D. received a PhD grant from Servier's Laboratories. I-Stem is part of the Biotherapies Institute for Rare Diseases (BIRD) supported by the Association Française contre les Myopathies (AFM-Téléthon)., ANR-11-INBS-0009,INGESTEM,INFRASTRUCTURE NATIONALE D'INGENIERIE DES CELLULES SOUCHES PLURIPOTENTES(2011), ANR-11-INBS-0011,NeurATRIS,Infrastructure de Recherche Translationnelle pour les Biothérapies en Neurosciences(2011), ANR-13-SAMA-0006,SynDivAutism,Diversité Synaptique dans l'autisme(2013), ANR-10-LABX-0013,GENMED,Medical Genomics(2010), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), d'Eggis, Gilles, Infrastructures - INFRASTRUCTURE NATIONALE D'INGENIERIE DES CELLULES SOUCHES PLURIPOTENTES - - INGESTEM2011 - ANR-11-INBS-0009 - INBS - VALID, Infrastructures - Infrastructure de Recherche Translationnelle pour les Biothérapies en Neurosciences - - NeurATRIS2011 - ANR-11-INBS-0011 - INBS - VALID, Santé Mentale et Addictions - Diversité Synaptique dans l'autisme - - SynDivAutism2013 - ANR-13-SAMA-0006 - SAMENTA - VALID, Medical Genomics - - GENMED2010 - ANR-10-LABX-0013 - LABX - VALID, Université d'Évry-Val-d'Essonne (UEVE)-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré, CHU Pitié-Salpêtrière [APHP], Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [APHP], University of Geneva [Switzerland], Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut Pasteur [Paris], Institut Pasteur [Paris], ANR-11-INBS-0009/11-INBS-0009,INGESTEM,INFRASTRUCTURE NATIONALE D'INGENIERIE DES CELLULES SOUCHES PLURIPOTENTES(2011), ANR-11-INBS-0011/11-INBS-0011,NeurATRIS,Infrastructure de Recherche Translationnelle pour les Biothérapies en Neurosciences(2011), ANR: PREFI-10-LABX-13/10-LABX-0013,GENMED,Medical Genomics(2010), and Institut Pasteur [Paris]-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Male, GAS, Global Assessment Scale, 0301 basic medicine, VPA, valproic acid, Autism Spectrum Disorder, Cellular differentiation, Autism, Human Embryonic Stem Cells, Drug repurposing, MESH: Neurons, lcsh:Medicine, hESC, human embryonic stem cells, Haploinsufficiency, Severity of Illness Index, RPM, Raven's progressive matrices, MESH: Nerve Tissue Proteins, MESH: Neuronal Plasticity, Induced pluripotent stem cell, SHANK3, Cells, Cultured, ASD, autism spectrum disorders, Neurons, ADOS, Autism Diagnosis Observational Scale, Genetics, MESH: Autism Spectrum Disorder, lcsh:R5-920, Neuronal Plasticity, PPVT, Peabody Picture Vocabulary Test, PSC, pluripotent stem cells, Cell Differentiation, General Medicine, Neural stem cell, 3. Good health, Drug repositioning, Phenotype, Autism spectrum disorder, MESH: Pluripotent Stem Cells, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], MESH: Haploinsufficiency, lcsh:Medicine (General), Research Paper, MESH: Cells, Cultured, Pluripotent Stem Cells, MESH: Cell Differentiation, [SDV.SP.MED] Life Sciences [q-bio]/Pharmaceutical sciences/Medication, Nerve Tissue Proteins, ADHD, Attention Deficit Hyperactive Disorder, Lithium, SHANK3, SH3 and multiple ankyrin repeat domains 3, MESH: Phenotype, General Biochemistry, Genetics and Molecular Biology, iPSC, induced pluripotent stem cells, 03 medical and health sciences, [SDV.SP.MED]Life Sciences [q-bio]/Pharmaceutical sciences/Medication, High throughput screening, MESH: Severity of Illness Index, medicine, Humans, NSC, neural stem cells, RNA, Messenger, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], HTS, high throughput screening, MESH: RNA, Messenger, Valproate, MESH: Humans, MESH: Lithium, business.industry, Valproic Acid, MESH: Transcriptome, lcsh:R, MESH: Human Embryonic Stem Cells, medicine.disease, FDA, Food and Drug Administration, Embryonic stem cell, MESH: Male, DMSO, dimethylsulfoxyde, PPIA, Peptidylprolyl Isomerase A, 030104 developmental biology, SRS, Social Responsiveness Scale, Transcriptome, business, Neuroscience, MESH: Valproic Acid
Abstract: Autism spectrum disorders affect millions of individuals worldwide, but their heterogeneity complicates therapeutic intervention that is essentially symptomatic. A versatile yet relevant model to rationally screen among hundreds of therapeutic options would help improving clinical practice. Here we investigated whether neurons differentiated from pluripotent stem cells can provide such a tool using SHANK3 haploinsufficiency as a proof of principle. A library of compounds was screened for potential to increase SHANK3 mRNA content in neurons differentiated from control human embryonic stem cells. Using induced pluripotent stem cell technology, active compounds were then evaluated for efficacy in correcting dysfunctional networks of neurons differentiated from individuals with deleterious point mutations of SHANK3. Among 202 compounds tested, lithium and valproic acid showed the best efficacy at corrected SHANK3 haploinsufficiency associated phenotypes in cellulo. Lithium pharmacotherapy was subsequently provided to one patient and, after one year, an encouraging decrease in autism severity was observed. This demonstrated that pluripotent stem cell-derived neurons provide a novel cellular paradigm exploitable in the search for specific disease-modifying treatments., Highlights • Human neurons were used to screen for compounds correcting symptoms associated with SHANK3 haploinsufficiency syndrome. • Screening criteria were the ability to increase SHANK3 expression and to increase glutamatergic transmission. • Selected hit compounds were then validated using neurons differentiated from individuals with SHANK3 disrupting mutations. • Lithium was selected and delivered to one of SHANK3 patient showing encouraging positive clinical outcomes after one year. The clinical heterogeneity between individuals affected by autism makes it difficult to anticipate the effectiveness of a treatment. Furthermore, clinical practice lacks biological tools to help make such decisions. Here we use neurons, produced from pluripotent stem cells derived from patients affected by SHANK3 haploinsufficiency syndrome, to test the efficiency of therapeutic compounds. We screened the biological activity of more than 200 compounds on SHANK3 expression. Lithium was ultimately selected and delivered to one patient with a SHANK3-disruptive mutation. This resulted in a positive outcome, as determined by improved autistic core symptoms, thus supporting the usefulness of this type of predictive approach.
Published: 2016

8. Validation of a clinical practice-based algorithm for the diagnosis of autosomal recessive cerebellar ataxias based on NGS identified cases

Author: Martial Mallaret, Mathilde Renaud, Claire Redin, Nathalie Drouot, Jean Muller, Francois Severac, Jean Louis Mandel, Wahiba Hamza, Traki Benhassine, Lamia Ali-Pacha, Meriem Tazir, Alexandra Durr, Marie-Lorraine Monin, Cyril Mignot, Perrine Charles, Lionel Van Maldergem, Ludivine Chamard, Christel Thauvin-Robinet, Vincent Laugel, Lydie Burglen, Patrick Calvas, Marie-Céline Fleury, Christine Tranchant, Mathieu Anheim, Michel Koenig, Institut de Génétique et de Biologie Moléculaire et Cellulaire ( IGBMC ), Université de Strasbourg ( UNISTRA ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Biologie Cellulaire et Moléculaire, Université des Sciences et de la Technologie Houari Boumediene [Alger] ( USTHB ), Service de Neurologie, CHU Mustapha, 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 ), Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Pitié-Salpêtrière [APHP], Centre de Référence des Déficiences Intellectuelles de Causes Rares, Service de neurologie 1 [CHU Pitié-Salpétrière], Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), Centre Hospitalier Régional Universitaire [Besançon] ( CHRU Besançon ), 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 ), Génétique des Anomalies du Développement ( GAD ), Université de Bourgogne ( UB ) -IFR100 - Structure fédérative de recherche Santé-STIC, Hôpital de Hautepierre [Strasbourg], Service de neuropédiatrie et pathologie du développement, Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Trousseau [APHP], Service de Génétique et d'Embryologie Médicale, Centre Hospitalier Universitaire de Toulouse, Ipsen Merz Actelion, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université des Sciences et de la Technologie Houari Boumediene [Alger] (USTHB), 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), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], 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), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), 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), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Génétique des Anomalies du Développement (GAD), IFR100 - Structure fédérative de recherche Santé-STIC-Université de Bourgogne (UB), CHU Trousseau [APHP], Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene [Alger] (USTHB), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de Neurologie [CHU Pitié-Salpêtrière], and IFR70-CHU Pitié-Salpêtrière [AP-HP]
Subjects: Male, 0301 basic medicine, Neurology, Bioinformatics, form, 0302 clinical medicine, Databases, Genetic, Recessive ataxia, Age of Onset, Neurogenetics, Neuroradiology, medicine.diagnostic_test, High-Throughput Nucleotide Sequencing, deficiency, cohort, Middle Aged, adck3, 3. Good health, Female, medicine.symptom, Algorithm, Algorithms, Adult, medicine.medical_specialty, Ataxia, Adolescent, Cerebellar Ataxia, Genes, Recessive, Physical examination, [SDV.BC]Life Sciences [q-bio]/Cellular Biology, cabc1/adck3, Young Adult, 03 medical and health sciences, atrophy, Next generation sequencing, medicine, Humans, gene, Aged, Retrospective Studies, Cerebellar ataxia, business.industry, Electromyography, [ SDV.BC ] Life Sciences [q-bio]/Cellular Biology, Reproducibility of Results, mutations, 030104 developmental biology, phenotypic variability, Neurology (clinical), Age of onset, business, 030217 neurology & neurosurgery, ADCK3
Abstract: International audience; Establishing a molecular diagnosis of autosomal recessive cerebellar ataxias (ARCA) is challenging due to phenotype and genotype heterogeneity. We report the validation of a previously published clinical practice-based algorithm to diagnose ARCA. Two assessors performed a blind analysis to determine the most probable mutated gene based on comprehensive clinical and paraclinical data, without knowing the molecular diagnosis of 23 patients diagnosed by targeted capture of 57 ataxia genes and high-throughput sequencing coming from a 145 patients series. The correct gene was predicted in 61 and 78 % of the cases by the two assessors, respectively. There was a high inter-rater agreement [K = 0.85 (0.55-0.98) p < 0.001] confirming the algorithm's reproducibility. Phenotyping patients with proper clinical examination, imaging, biochemical investigations and nerve conduction studies remain crucial for the guidance of molecular analysis and to interpret next generation sequencing results. The proposed algorithm should be helpful for diagnosing ARCA in clinical practice.
Published: 2016

9. Novel GABRG2 mutations cause familial febrile seizures

Author: Virginie Lambrecq, Stéphanie Baulac, Saeko Ishida, Katia Hardies, Federico Zara, Sarah Weckhuysen, Olivier Dulac, Isabelle An-Gourfinkel, Michel Baulac, Morgane Boillot, Mailys Daniau, Fabienne Picard, Carlo Minetti, Michele Iacomino, Rima Nabbout, Eric LeGuern, Mélanie Morin-Brureau, Pasquale Striano, Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre de référence des épilepsies rares [CHU Pitié-Salpêtrière], Unité fonctionnelle d'épilepsie [CHU Pitié-Salpêtrière], Service de Neurologie [CHU Pitié-Salpêtrière], IFR70-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-IFR70-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Service de Neurologie [CHU Pitié-Salpêtrière], Hôpitaux Universitaires de Genève (HUG), Universita degli studi di Genova, Department of Molecular and Developmental Genetics (VIB11), Flanders institute of biotechnology, Institute Born-Bunge, University of Antwerp (UA), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-IFR70-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)-Service de Neurologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), HAL UPMC, Gestionnaire, Università degli studi di Genova = University of Genoa (UniGe), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Institut du Cerveau et de la Moëlle Epinière (ICM), CHU Pitié-Salpêtrière [APHP] - Université Pierre et Marie Curie - Paris 6 (UPMC) - Institut National de la Santé et de la Recherche Médicale (INSERM) - Centre National de la Recherche Scientifique (CNRS), Assistance publique - Hôpitaux de Paris (AP-HP) - CHU Pitié-Salpêtrière [APHP], University of Genova, University of Antwerp, Hôpital Necker - Enfants malades, Assistance publique - Hôpitaux de Paris (AP-HP) - Université Paris Descartes - Paris 5 (UPD5), and Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière]
Subjects: Bioinformatics, medicine.disease_cause, Article, Frameshift mutation, 03 medical and health sciences, Epilepsy, 0302 clinical medicine, Medicine, Missense mutation, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], Gene, Genetics (clinical), Exome sequencing, 030304 developmental biology, GABRG2, Genetics, 0303 health sciences, Mutation, biology, business.industry, medicine.disease, ddc:616.8, Cohort, biology.protein, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], Human medicine, Neurology (clinical), business, 030217 neurology & neurosurgery
Abstract: International audience; Objective: To identify the genetic cause in a large family with febrile seizures (FS) and temporal lobe epilepsy (TLE) and subsequently search for additional mutations in a cohort of 107 families with FS, with or without epilepsy.Methods: The cohort consisted of 1 large family with FS and TLE, 64 smaller French families recruited through a national French campaign, and 43 Italian families. Molecular analyses consisted of whole-exome sequencing and mutational screening.Results: Exome sequencing revealed a p.Glu402fs*3 mutation in the γ2 subunit of the GABAA receptor gene (GABRG2) in the large family with FS and TLE. Three additional nonsense and frameshift GABRG2 mutations (p.Arg136*, p.Val462fs*33, and p.Pro59fs*12), 1 missense mutation (p.Met199Val), and 1 exonic deletion were subsequently identified in 5 families of the follow-up cohort.Conclusions: We report GABRG2 mutations in 5.6% (6/108) of families with FS, with or without associated epilepsy. This study provides evidence that GABRG2 mutations are linked to the FS phenotype, rather than epilepsy, and that loss-of-function of GABAA receptor γ2 subunit is the probable underlying pathogenic mechanism.
Published: 2015

10. De novo mutations in HCN1 cause early infantile epileptic encephalopathy

Author: Nava, Caroline, Dalle, Carine, Rastetter, Agnès, Striano, Pasquale, de Kovel, Carolien G F, Nabbout, Rima, Cancès, Claude, Ville, Dorothée, Brilstra, Eva H, Gobbi, Giuseppe, Raffo, Emmanuel, Bouteiller, Delphine, Marie, Yannick, Trouillard, Oriane, Robbiano, Angela, Keren, Boris, Agher, Dahbia, Roze, Emmanuel, Lesage, Suzanne, Nicolas, Aude, Brice, Alexis, Baulac, Michel, Vogt, Cornelia, El Hajj, Nady, Schneider, Eberhard, Suls, Arvid, Weckhuysen, Sarah, Gormley, Padhraig, Lehesjoki, Anna-Elina, De Jonghe, Peter, Helbig, Ingo, Baulac, Stéphanie, Zara, Federico, Koeleman, Bobby P C, Haaf, Thomas, LeGuern, Eric, Depienne, Christel, Møller, Rikke Steensbjerre, Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC), 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 [APHP]-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [APHP]-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Giannina Gaslini Institute, University Medical Center [Utrecht], Service de neurologie pédiatrique [CHU Necker], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Necker - Enfants Malades [AP-HP], Epilepsies de l'Enfant et Plasticité Cérébrale (U1129), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de Neurologie Pédiatrique [Toulouse], CHU Toulouse [Toulouse], Service de Neurologie Pédiatrique [CHU Lyon], Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), IRCCS Istituto delle Scienze Neurologiche di Bologna [Bologna, Italy], Ospedale Bellaria [Bologna, Italy], Développement, Adaptation et Handicap. Régulations cardio-respiratoires et de la motricité. (DevAH), Université de Lorraine (UL), Service de Neurologie Pédiatrique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Institüt für Humangenetik [Würzburg], Julius-Maximilians-Universität Würzburg [Wurtzbourg, Allemagne] (JMU), Neurogenetics Group, Institute Born-Bunge, University of Antwerp (UA), The Wellcome Trust Sanger Institute [Cambridge], Department of Medical and Clinical Genetics [Helsinki], Haartman Institute [Helsinki], Faculty of Medecine [Helsinki], University of Helsinki-University of Helsinki-Faculty of Medecine [Helsinki], University of Helsinki-University of Helsinki, University of Helsinki, University Medical Center of Schleswig–Holstein = Universitätsklinikum Schleswig-Holstein (UKSH), Kiel University, 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), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-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), 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), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Développement, Adaptation et Handicap. Régulations cardio-respiratoires et de la motricité (DevAH), EuroEPINOMICS RES Consortium, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-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)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Service Neurologie Pédiatrique [CHU Toulouse], Pôle Enfants [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Julius-Maximilians-Universität Würzburg (JMU), Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki, and Helsingin yliopisto = Helsingfors universitet = University of Helsinki
Subjects: Male, MESH: Sequence Analysis, DNA, Patch-Clamp Techniques, Potassium Channels, MESH: Spasms, Infantile, MESH: Sequence Homology, Amino Acid, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, Mutant, DNA Mutational Analysis, Sequence Homology, MESH: Cricetinae, Aicardi Syndrome, Amino Acid Sequence, Animals, CHO Cells, Child, Preschool, Cohort Studies, Cricetinae, Cricetulus, Female, Humans, Hyperpolarization-Activated Cyclic Nucleotide-Gated Channels, Infant, Molecular Sequence Data, Mutation, Missense, Pedigree, Sequence Analysis, DNA, Sequence Homology, Amino Acid, Spasms, Infantile, Point Mutation, Genetics, MESH: Amino Acid Sequence, Bioinformatics, Infantile, Spasms, Epilepsy, 0302 clinical medicine, MESH: Cricetulus, Missense mutation, MESH: Animals, MESH: DNA Mutational Analysis, Child, MESH: Cohort Studies, Exome sequencing, 0303 health sciences, MESH: Potassium Channels, de novo mutation, epileptic encephalopathies, MESH: Infant, 3. Good health, Amino Acid, Sequence Analysis, MESH: Pedigree, Biology, 03 medical and health sciences, Dravet syndrome, MESH: CHO Cells, MESH: Patch-Clamp Techniques, medicine, Homomeric, MESH: Hyperpolarization-Activated Cyclic Nucleotide-Gated Channels, MESH: Aicardi Syndrome, Preschool, Gene, 030304 developmental biology, MESH: Point Mutation, MESH: Mutation, Missense, [SDV.MHEP.PED]Life Sciences [q-bio]/Human health and pathology/Pediatrics, MESH: Humans, MESH: Molecular Sequence Data, Point mutation, MESH: Child, Preschool, DNA, medicine.disease, MESH: Male, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Mutation, Human medicine, Missense, MESH: Female, 030217 neurology & neurosurgery
Abstract: International audience; Hyperpolarization-activated, cyclic nucleotide-gated (HCN) channels contribute to cationic Ih current in neurons and regulate the excitability of neuronal networks. Studies in rat models have shown that the Hcn1 gene has a key role in epilepsy, but clinical evidence implicating HCN1 mutations in human epilepsy is lacking. We carried out exome sequencing for parent-offspring trios with fever-sensitive, intractable epileptic encephalopathy, leading to the discovery of two de novo missense HCN1 mutations. Screening of follow-up cohorts comprising 157 cases in total identified 4 additional amino acid substitutions. Patch-clamp recordings of Ih currents in cells expressing wild-type or mutant human HCN1 channels showed that the mutations had striking but divergent effects on homomeric channels. Individuals with mutations had clinical features resembling those of Dravet syndrome with progression toward atypical absences, intellectual disability and autistic traits. These findings provide clear evidence that de novo HCN1 point mutations cause a recognizable early-onset epileptic encephalopathy in humans.
Published: 2014

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10 results on '"Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière]"'

1. Widening of the genetic and clinical spectrum of Lamb-Shaffer syndrome, a neurodevelopmental disorder due to SOX5 haploinsufficiency

2. Expanding the genetic and phenotypic relevance of KCNB1 variants in developmental and epileptic encephalopathies: 27 new patients and overview of the literature

3. Heterozygous Variants in KMT2E Cause a Spectrum of Neurodevelopmental Disorders and Epilepsy

4. Expanding the Phenotype Associated with NAA10-Related N-Terminal Acetylation Deficiency

5. Mutations in DCC cause isolated agenesis of the corpus callosum with incomplete penetrance

6. Genetic and phenotypic dissection of 1q43q44 microdeletion syndrome and neurodevelopmental phenotypes associated with mutations in ZBTB18 and HNRNPU

7. Human Pluripotent Stem Cell-derived Cortical Neurons for High Throughput Medication Screening in Autism: A Proof of Concept Study in SHANK3 Haploinsufficiency Syndrome

8. Validation of a clinical practice-based algorithm for the diagnosis of autosomal recessive cerebellar ataxias based on NGS identified cases

9. Novel GABRG2 mutations cause familial febrile seizures

10. De novo mutations in HCN1 cause early infantile epileptic encephalopathy

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