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Humbert L, Proust-Lemoine E, Dubucquoi S, Kemp EH, Saugier-Veber P, Fabien N, Raymond-Top I, Cardot-Bauters C, Carel JC, Cartigny M, Chabre O, Chanson P, Delemer B, Do Cao C, Guignat L, Kahn JE, Kerlan V, Lefebvre H, Linglart A, Mallone R, Reynaud R, Sendid B, Souchon PF, Touraine P, Wémeau JL, Vantyghem MC. Lessons from prospective longitudinal follow-up of a French APECED cohort. J Clin Endocrinol Metab 2024:dgae211. [PMID: 38605470 DOI: 10.1210/clinem/dgae211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 03/05/2024] [Accepted: 04/01/2024] [Indexed: 04/13/2024]
Abstract
BACKGROUND APECED syndrome is a rare disease caused by biallelic mutations of the AIRE gene, usually presenting with the triad "hypoparathyroidism-adrenal failure-chronic mucocutaneous candidiasis (CMC)" and non-endocrine manifestations. The aim of this study was to determine the molecular profile of the AIRE gene, the prevalence of rare manifestations and to characterize immunological disturbances in a French cohort. PATIENTS AND METHODS A national, multicenter prospective observational study to collect genetic, clinical, biological and immunological data (NCT03751683). RESULTS 25 patients (23 families) were enrolled. Eleven distinct AIRE variants were identified, two of which were not previously reported: an intronic variant, c.653-70G > A, and a c.1066del (p.Arg356GlyfsX22) variant (exon 9). The most common was the Finnish variant c.769C > T (16 alleles), followed by the variant c.967_979del13 (15 alleles), which seemed associated with a less severe phenotype. 17/25 patients were homozygote. The median number of clinical manifestations was seven; 19/25 patients presented with the hypoparathyroidism-adrenal failure-CMC triad, 8/13 showed pulmonary involvement, 20/25 had ectodermal dystrophy, 8/25 had malabsorption, and 6/23 had asplenia. Fifteen out of 19 patients had NK cell lymphopenia with an increase in CD4+ and CD8+ T lymphocytes and an age-dependent alteration of B lymphocyte homeostasis compared with matched controls (p < 0.001), related to the severity of the disease. All tested sera (n = 18) were positive for anti-interferon-α, 15/18 for anti-interleukin-22 antibodies, and 13/18 for anti-interleukin-17F antibodies, without clear phenotypic correlation other than with CMC. CONCLUSION This first prospective cohort showed a high AIRE genotype variability, with two new gene variants. The prevalence of potentially life-threatening non-endocrine manifestations, was higher with systematic screening. These manifestations could, along with age-dependent B-cell lymphopenia, contribute to disease severity. Systematic screening for all the manifestations of the syndrome would allow earlier diagnosis, supporting vaccination, and targeted therapeutic approaches.
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Affiliation(s)
- Linda Humbert
- Department of Endocrinology, Diabetology and Metabolism, Huriez Hospital, Lille University Hospital, F-59000 Lille, France
| | - Emmanuelle Proust-Lemoine
- Department of Endocrinology, Diabetology and Metabolism, Huriez Hospital, Lille University Hospital, F-59000 Lille, France
| | - Sylvain Dubucquoi
- Institut d'Immunologie-HLA, Centre de Biologie-Pathologie, Boulevard du Professeur Jules Leclercq - 59037 Lille Cedex
- University of Lille, F-59000 Lille, France
| | - Elisabeth Helen Kemp
- Department of Oncology and Metabolism, Faculty of Medicine, Dentistry and Health, University of Sheffield, Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Pascale Saugier-Veber
- Univ Rouen Normandie, Inserm U1245, Normandie Univ and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, F-76000 Rouen, France
| | | | - Isabelle Raymond-Top
- Institut d'Immunologie-HLA, Centre de Biologie-Pathologie, Boulevard du Professeur Jules Leclercq - 59037 Lille Cedex
| | - Catherine Cardot-Bauters
- Department of Endocrinology, Diabetology and Metabolism, Huriez Hospital, Lille University Hospital, F-59000 Lille, France
| | - Jean-Claude Carel
- AP-HP Nord Université Paris Cité, Hôpital Universitaire Robert-Debré, Service d'Endocrinologie Diabétologie Pédiatrique & INSERM NeuroDiderot, Centre de Référence Maladies Endocriniennes Rares de la Croissance, 48, Boulevard Sérurier, 75935 Paris cedex 19, France
| | - Maryse Cartigny
- Department of Pediatry, Hôpital Jeanne de Flandres, Lille University Hospital, F-59000 Lille, France
| | - Olivier Chabre
- Univ. Grenoble Alpes, Service d'Endocrinologie CHU Grenoble Alpes, Unité mixte de recherche INSERM-CEA-UGA UMR1036 38000 Grenoble Alpes
| | - Philippe Chanson
- Université Paris-Saclay, Inserm, Physiologie et Physiopathologie Endocriniennes, Assistance Publique-Hôpitaux de Paris, Hôpital Bicêtre, Service d'Endocrinologie et des Maladies de la Reproduction, Centre de Référence des Maladies Rares de l'Hypophyse, 94275 Le Kremlin-Bicêtre, France
| | - Brigitte Delemer
- Department of Endocrinology and Diabetology, CHU Reims, 45 Rue Cognacq Jay, 51 092 Reims, France
| | - Christine Do Cao
- Department of Endocrinology, Diabetology and Metabolism, Huriez Hospital, Lille University Hospital, F-59000 Lille, France
| | - Laurence Guignat
- Centre de Référence des Maladies Rares de la Surrénale, Endocrinologie, Hôpital Cochin, 123, Boulevard de Port Royal, 75014 Paris, France
| | - Jean Emmanuel Kahn
- Institut d'Immunologie-HLA, Centre de Biologie-Pathologie, Boulevard du Professeur Jules Leclercq - 59037 Lille Cedex
- Department of Internal Medicine, National Reference Center for Hypereosinophilic Syndromes (CEREO), Hôpital Foch, 40, Rue Worth, 92151, Suresnes, France and University of Paris Saclay, APHP, CHU Ambroise Paré, Boulogne-Billancourt, France
| | - Veronique Kerlan
- Department of Endocrinology, Diabetology and Metabolism CHU Brest, Hôpital de la Cavale Blanche, 29609 Brest Cedex France
| | - Herve Lefebvre
- Department of Endocrinology, University Hospital of Rouen, 1, rue de Germont, 76031 Rouen, France
| | - Agnès Linglart
- AP-HP, Service d'Endocrinologie et Diabète de l'Enfant, Hôpital Bicêtre Paris-Saclay, AP-HP, Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphate, Filière OSCAR, ERN BOND, ERN for Rare Endocrine Disorders, Plateforme d'Expertise des Maladies Rares de Paris Saclay, Université Paris Saclay, INSERM U1185, Le Kremlin-Bicêtre, France
| | - Roberto Mallone
- Clinical Department of Diabetology and Clinical Immunology, INSERM U1016 Cochin Institute, DeARLab Team Mallone-You, Groupe Hospitalier Cochin-Port-Royal, Bâtiment Cassini, 123, Boulevard de Port-Royal, 75014 Paris
| | - Rachel Reynaud
- Service de Pediatrie Multidisciplinaire CHU Timone Enfants APHM Aix Marseile Université Centre de Reference Maladies Hypophysaire Rares 13385 Marseille Cedex 05
| | - Boualem Sendid
- Institut de Microbiologie, Centre de Biologie Pathologie Génétique, Centre Hospitalier Universitaire de Lille, 1, Boulevard Pr J. Leclercq, 59037 Lille Cedex, Inserm U1285 - CNRS UMR 8576, 1 Place Verdun, 59037 Lille- France
| | - Pierre-François Souchon
- CHU de Reims - American Memorial Hospital - Service de Pédiatrie , 47 rue Cognac Jay, 51092 Reims Cedex, France
| | - Philippe Touraine
- Department of Endocrinology and Reproductive Medicine, AP-HP, Sorbonne University Medicine, 91-105 Bd de l'Hôpital, 75013 Paris France
| | - Jean-Louis Wémeau
- Department of Endocrinology, Diabetology and Metabolism, Huriez Hospital, Lille University Hospital, F-59000 Lille, France
- University of Lille, F-59000 Lille, France
| | - Marie-Christine Vantyghem
- Department of Endocrinology, Diabetology and Metabolism, Huriez Hospital, Lille University Hospital, F-59000 Lille, France
- University of Lille, F-59000 Lille, France
- Inserm U1190, Lille University, European Genomic Institute for Diabetes, F-59000 Lille, France
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2
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de Masfrand S, Cogné B, Nizon M, Deb W, Goldenberg A, Lecoquierre F, Nicolas G, Bournez M, Vitobello A, Mau-Them FT, le Guyader G, Bilan F, Bauer P, Zweier C, Piard J, Pasquier L, Bézieau S, Gerard B, Faivre L, Saugier-Veber P, Piton A, Isidor B. Penetrance, variable expressivity and monogenic neurodevelopmental disorders. Eur J Med Genet 2024:104932. [PMID: 38453051 DOI: 10.1016/j.ejmg.2024.104932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 03/01/2024] [Accepted: 03/02/2024] [Indexed: 03/09/2024]
Abstract
PURPOSE Incomplete penetrance is observed for most monogenic diseases. However, for neurodevelopmental disorders, the interpretation of single and multi-nucleotide variants (SNV/MNVs) is usually based on the paradigm of complete penetrance. METHOD From 2020 to 2022, we proposed a collaboration study with the French molecular diagnosis for intellectual disability network. The aim was to recruit families for whom the index case, diagnosed with a neurodevelopmental disorder, was carrying a pathogenic or likely pathogenic variant for an OMIM morbid gene and inherited from an asymptomatic parent. Grandparents were analyzed when available for segregation study. RESULTS We identified 12 patients affected by a monogenic neurodevelopmental disorder caused by likely pathogenic or pathogenic variant (SNV/MNV) inherited from an asymptomatic parent. These genes were usually associated with de novo variants. The patients carried different variants (1 splice-site variant, 4 nonsense and 7 frameshift) in 11 genes: CAMTA1, MBD5, KMT2C, KMT2E, ZMIZ1, MN1, NDUFB11, CUL3, MED13, ARID2 and RERE. Grandparents have been tested in 6 families, and each time the variant was confirmed de novo in the healthy carrier parent. CONCLUSION Incomplete penetrance for SNV and MNV in neurodevelopmental disorders might be more frequent than previously thought. This point is crucial to consider for interpretation of variants, family investigation, genetic counseling, and prenatal diagnosis. Molecular mechanisms underlying this incomplete penetrance still need to be identified.
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Affiliation(s)
- Servane de Masfrand
- Nantes Université, CHU Nantes, Service de Génétique Médicale, 44000, Nantes, France.
| | - Benjamin Cogné
- Nantes Université, CHU Nantes, Service de Génétique Médicale, 44000, Nantes, France; Nantes Université, CHU Nantes, CNRS, INSERM, L'institut Du Thorax, 44000 Nantes, France
| | - Mathilde Nizon
- Nantes Université, CHU Nantes, Service de Génétique Médicale, 44000, Nantes, France; Nantes Université, CHU Nantes, CNRS, INSERM, L'institut Du Thorax, 44000 Nantes, France
| | - Wallid Deb
- Nantes Université, CHU Nantes, Service de Génétique Médicale, 44000, Nantes, France; Nantes Université, CHU Nantes, CNRS, INSERM, L'institut Du Thorax, 44000 Nantes, France
| | - Alice Goldenberg
- CHU Rouen, Service de Génétique et Centre de Référence pour Les Troubles Du Développement, 76183, Rouen, France
| | - François Lecoquierre
- CHU Rouen, Service de Génétique et Centre de Référence pour Les Troubles Du Développement, 76183, Rouen, France
| | - Gaël Nicolas
- CHU Rouen, Service de Génétique et Centre de Référence pour Les Troubles Du Développement, 76183, Rouen, France
| | - Marie Bournez
- Centre de Référence Anomalies Du Développement et Syndromes Malformatifs, FHU TRANSLAD, CHU Dijon, 21000, Dijon, France
| | - Antonio Vitobello
- Unité Fonctionnelle Innovation en Diagnostic Génomique des Maladies Rares, CHU Dijon Bourgogne, Dijon, France; Génétique des Anomalies Du Développement, INSERM 123, Université de Bourgogne, Dijon, France
| | - Frédéric Tran Mau-Them
- Unité Fonctionnelle Innovation en Diagnostic Génomique des Maladies Rares, CHU Dijon Bourgogne, Dijon, France; Génétique des Anomalies Du Développement, INSERM 123, Université de Bourgogne, Dijon, France
| | - Gwenaël le Guyader
- Service de Génétique Clinique, Centre de Compétence Maladies Rares Anomalies Du Développement, CHU de Poitiers, Poitiers, France
| | - Frédéric Bilan
- Service de Génétique Clinique, Centre de Compétence Maladies Rares Anomalies Du Développement, CHU de Poitiers, Poitiers, France
| | | | | | - Juliette Piard
- Centre de Génétique Humaine and Integrative and Cognitive Neuroscience Research Unit EA481, Université de Franche-Comté, Besançon, France
| | | | - Stéphane Bézieau
- Nantes Université, CHU Nantes, Service de Génétique Médicale, 44000, Nantes, France; Nantes Université, CHU Nantes, CNRS, INSERM, L'institut Du Thorax, 44000 Nantes, France
| | - Bénédicte Gerard
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Laurence Faivre
- Centre de Référence Anomalies Du Développement et Syndromes Malformatifs, FHU TRANSLAD, CHU Dijon, 21000, Dijon, France; Génétique des Anomalies Du Développement, INSERM 123, Université de Bourgogne, Dijon, France
| | - Pascale Saugier-Veber
- CHU Rouen, Service de Génétique et Centre de Référence pour Les Troubles Du Développement, 76183, Rouen, France
| | - Amélie Piton
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Bertrand Isidor
- Nantes Université, CHU Nantes, Service de Génétique Médicale, 44000, Nantes, France; Nantes Université, CHU Nantes, CNRS, INSERM, L'institut Du Thorax, 44000 Nantes, France.
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Lecoquierre F, Cassinari K, Drouot N, May A, Fourneaux S, Charbonnier F, Derambure C, Coutant S, Saugier-Veber P, Hoischen A, Charbonnier C, Nicolas G. Assessment of parental mosaicism rates in neurodevelopmental disorders caused by apparent de novo pathogenic variants using deep sequencing. Sci Rep 2024; 14:5289. [PMID: 38438430 PMCID: PMC10912112 DOI: 10.1038/s41598-024-53358-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 01/31/2024] [Indexed: 03/06/2024] Open
Abstract
While de novo variants (DNV) are overall at low risk of recurrence in subsequent pregnancies, a subset is at high risk due to parental mosaicism. Accurately identifying cases of parental mosaicism is therefore important for genetic counseling in clinical care. Some studies have investigated the rate of parental mosaics, but most were either limited by the sensitivity of the techniques (i.e. exome or genome sequencing), or focused on specific types of disease such as epileptic syndromes. This study aimed to determine the proportion of parental mosaicism among the DNV causing neurodevelopmental disorders (NDDs) in a series not enriched in epilepsy syndromes. We collected 189 patients with NDD-associated DNV. We applied a smMIP enrichment method and sequenced parental blood DNA samples to an average depth of 7000x. Power simulation indicated that mosaicism with an allelic fraction of 0.5% would have been detected for 87% of positions with 90% power. We observed seven parental mosaic variants (3.7% of families), of which four (2.1% of families) had an allelic fraction of less than 1%. In total, our study identifies a relatively low proportion of parental mosaicism in NDD-associated DNVs and raises the question of a biological mechanism behind the higher rates of parental mosaicism detected in other studies, particularly those focusing on epileptic syndromes.
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Affiliation(s)
- François Lecoquierre
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France.
- Centre de Ressources Biologiques institutionnel du CHU de Rouen - Biothèque filière génétique, Rouen, France.
| | - Kévin Cassinari
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Nathalie Drouot
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Angèle May
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Steeve Fourneaux
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Francoise Charbonnier
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Celine Derambure
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Sophie Coutant
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Pascale Saugier-Veber
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Alexander Hoischen
- Department of Human Genetics, Radboud University Medical Center, 6525 GA, Nijmegen, The Netherlands
| | - Camille Charbonnier
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Gaël Nicolas
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
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Herbst C, Bothe V, Wegler M, Axer-Schaefer S, Audebert-Bellanger S, Gecz J, Cogne B, Feldman HB, Horn AHC, Hurst ACE, Kelly MA, Kruer MC, Kurolap A, Laquerriere A, Li M, Mark PR, Morawski M, Nizon M, Pastinen T, Polster T, Saugier-Veber P, SeSong J, Sticht H, Stieler JT, Thifffault I, van Eyk CL, Marcorelles P, Vezain-Mouchard M, Abou Jamra R, Oppermann H. Heterozygous loss-of-function variants in DOCK4 cause neurodevelopmental delay and microcephaly. Hum Genet 2024; 143:455-469. [PMID: 38526744 PMCID: PMC11043173 DOI: 10.1007/s00439-024-02655-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/09/2024] [Indexed: 03/27/2024]
Abstract
Neurons form the basic anatomical and functional structure of the nervous system, and defects in neuronal differentiation or formation of neurites are associated with various psychiatric and neurodevelopmental disorders. Dynamic changes in the cytoskeleton are essential for this process, which is, inter alia, controlled by the dedicator of cytokinesis 4 (DOCK4) through the activation of RAC1. Here, we clinically describe 7 individuals (6 males and one female) with variants in DOCK4 and overlapping phenotype of mild to severe global developmental delay. Additional symptoms include coordination or gait abnormalities, microcephaly, nonspecific brain malformations, hypotonia and seizures. Four individuals carry missense variants (three of them detected de novo) and three individuals carry null variants (two of them maternally inherited). Molecular modeling of the heterozygous missense variants suggests that the majority of them affect the globular structure of DOCK4. In vitro functional expression studies in transfected Neuro-2A cells showed that all missense variants impaired neurite outgrowth. Furthermore, Dock4 knockout Neuro-2A cells also exhibited defects in promoting neurite outgrowth. Our results, including clinical, molecular and functional data, suggest that loss-of-function variants in DOCK4 probable cause a variable spectrum of a novel neurodevelopmental disorder with microcephaly.
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Affiliation(s)
- Charlotte Herbst
- Institute of Human Genetics, University of Leipzig Medical Center, 04103, Leipzig, Germany
| | - Viktoria Bothe
- Institute of Human Genetics, University of Leipzig Medical Center, 04103, Leipzig, Germany
| | - Meret Wegler
- Institute of Human Genetics, University of Leipzig Medical Center, 04103, Leipzig, Germany
| | - Susanne Axer-Schaefer
- Department of Epileptology, Krankenhaus Mara Bethel Epilepsy Center Medical School OWL, Bielefeld University, Campus Bethel, Bielefeld, Germany
| | | | - Jozef Gecz
- Adelaide Medical School and Robinson Research Institute, The University of Adelaide, Adelaide, SA, Australia
| | - Benjamin Cogne
- Service de Génétique Médicale, CHU Nantes, 44000, Nantes, France
- l'institut du Thorax, Nantes Université, CHU Nantes, CNRS, INSERM, 44000, Nantes, France
| | - Hagit Baris Feldman
- The Genetics Institute and Genomics Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anselm H C Horn
- Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Erlangen National High Performance Computing Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Anna C E Hurst
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Melissa A Kelly
- HudsonAlpha Clinical Services Lab, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Michael C Kruer
- Barrow Neurological Institute, Phoenix Children's Hospital University of Arizona College of Medicine, Phoenix, USA
| | - Alina Kurolap
- The Genetics Institute and Genomics Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Annie Laquerriere
- Department of Anatomy, Inserm U1245 and CHU Rouen, Univ Rouen Normandie, 76000, Rouen, France
| | - Megan Li
- Invitae Corp, San Francisco, CA, USA
| | - Paul R Mark
- Division of Medical Genetics, Helen DeVos Children's Hospital, Corewell Health, Grand Rapids, MI, USA
| | - Markus Morawski
- Center of Neuropathology and Brain Research, Medical Faculty, Paul Flechsig Institute, University of Leipzig, Leipzig, Germany
| | - Mathilde Nizon
- Service de Génétique Médicale, CHU Nantes, 44000, Nantes, France
- l'institut du Thorax, Nantes Université, CHU Nantes, CNRS, INSERM, 44000, Nantes, France
| | - Tomi Pastinen
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, USA
- University of Missouri Kansas City School of Medicine, Kansas City, USA
| | - Tilman Polster
- Department of Epileptology, Krankenhaus Mara Bethel Epilepsy Center Medical School OWL, Bielefeld University, Campus Bethel, Bielefeld, Germany
| | - Pascale Saugier-Veber
- Department of Genetics and Reference Center for Developmental Disorders, Inserm U1245 and CHU Rouen, Univ Rouen Normandie, 76000, Rouen, France
| | - Jang SeSong
- Genomic Medicine Institute, Seoul National University, Seoul, Republic of Korea
| | - Heinrich Sticht
- Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Jens T Stieler
- Center of Neuropathology and Brain Research, Medical Faculty, Paul Flechsig Institute, University of Leipzig, Leipzig, Germany
| | - Isabelle Thifffault
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, USA
- University of Missouri Kansas City School of Medicine, Kansas City, USA
| | - Clare L van Eyk
- Adelaide Medical School and Robinson Research Institute, The University of Adelaide, Adelaide, SA, Australia
| | | | - Myriam Vezain-Mouchard
- Department of Genetics and Reference Center for Developmental Disorders, Inserm U1245 and CHU Rouen, Univ Rouen Normandie, 76000, Rouen, France
| | - Rami Abou Jamra
- Institute of Human Genetics, University of Leipzig Medical Center, 04103, Leipzig, Germany
| | - Henry Oppermann
- Institute of Human Genetics, University of Leipzig Medical Center, 04103, Leipzig, Germany.
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5
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Husson T, Lecoquierre F, Nicolas G, Richard AC, Afenjar A, Audebert-Bellanger S, Badens C, Bilan F, Bizaoui V, Boland A, Bonnet-Dupeyron MN, Brischoux-Boucher E, Bonnet C, Bournez M, Boute O, Brunelle P, Caumes R, Charles P, Chassaing N, Chatron N, Cogné B, Colin E, Cormier-Daire V, Dard R, Dauriat B, Delanne J, Deleuze JF, Demurger F, Denommé-Pichon AS, Depienne C, Dieux A, Dubourg C, Edery P, El Chehadeh S, Faivre L, Fergelot P, Fradin M, Garde A, Geneviève D, Gilbert-Dussardier B, Goizet C, Goldenberg A, Gouy E, Guerrot AM, Guimier A, Harzalla I, Héron D, Isidor B, Lacombe D, Le Guillou Horn X, Keren B, Kuechler A, Lacaze E, Lavillaureix A, Lehalle D, Lesca G, Lespinasse J, Levy J, Lyonnet S, Morel G, Jean-Marçais N, Marlin S, Marsili L, Mignot C, Nambot S, Nizon M, Olaso R, Pasquier L, Perrin L, Petit F, Pingault V, Piton A, Prieur F, Putoux A, Planes M, Odent S, Quélin C, Quemener-Redon S, Rama M, Rio M, Rossi M, Schaefer E, Rondeau S, Saugier-Veber P, Smol T, Sigaudy S, Touraine R, Mau-Them FT, Trimouille A, Van Gils J, Vanlerberghe C, Vantalon V, Vera G, Vincent M, Ziegler A, Guillin O, Campion D, Charbonnier C. Episignatures in practice: independent evaluation of published episignatures for the molecular diagnostics of ten neurodevelopmental disorders. Eur J Hum Genet 2024; 32:190-199. [PMID: 37872275 PMCID: PMC10853222 DOI: 10.1038/s41431-023-01474-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/29/2023] [Accepted: 09/28/2023] [Indexed: 10/25/2023] Open
Abstract
Variants of uncertain significance (VUS) are a significant issue for the molecular diagnosis of rare diseases. The publication of episignatures as effective biomarkers of certain Mendelian neurodevelopmental disorders has raised hopes to help classify VUS. However, prediction abilities of most published episignatures have not been independently investigated yet, which is a prerequisite for an informed and rigorous use in a diagnostic setting. We generated DNA methylation data from 101 carriers of (likely) pathogenic variants in ten different genes, 57 VUS carriers, and 25 healthy controls. Combining published episignature information and new validation data with a k-nearest-neighbour classifier within a leave-one-out scheme, we provide unbiased specificity and sensitivity estimates for each of the signatures. Our procedure reached 100% specificity, but the sensitivities unexpectedly spanned a very large spectrum. While ATRX, DNMT3A, KMT2D, and NSD1 signatures displayed a 100% sensitivity, CREBBP-RSTS and one of the CHD8 signatures reached <40% sensitivity on our dataset. Remaining Cornelia de Lange syndrome, KMT2A, KDM5C and CHD7 signatures reached 70-100% sensitivity at best with unstable performances, suffering from heterogeneous methylation profiles among cases and rare discordant samples. Our results call for cautiousness and demonstrate that episignatures do not perform equally well. Some signatures are ready for confident use in a diagnostic setting. Yet, it is imperative to characterise the actual validity perimeter and interpretation of each episignature with the help of larger validation sample sizes and in a broader set of episignatures.
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Affiliation(s)
- Thomas Husson
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Psychiatry, F-76000, Rouen, France
- Department of Research, Centre hospitalier du Rouvray, Sotteville-Lès-Rouen, France
| | - François Lecoquierre
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Gaël Nicolas
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Anne-Claire Richard
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Alexandra Afenjar
- APHP. Sorbonne Université, Centre de Référence Malformations et maladies congénitales du cervelet et déficiences intellectuelles de causes rares, département de génétique et embryologie médicale, Hôpital Trousseau, F-75012, Paris, France
| | | | - Catherine Badens
- Aix Marseille Univ, INSERM, MMG, Marseille, France; APHM, service de génétique, Marseille, France
| | - Frédéric Bilan
- CHU de Poitiers, Service de Génétique Médicale and Université de Poitiers, INSERM U1084, LNEC, F- 86000, Poitiers, France
| | - Varoona Bizaoui
- Service de génétique et neurodéveloppement, Pôle de Santé Mentale Enfant et Adolescent, Centre Hospitalier de l'Estran, Pontorson, France
| | - Anne Boland
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | | | - Elise Brischoux-Boucher
- Centre de génétique humaine, CHU Besancon, Universite de Bourgogne Franche-Comte, Besancon, France
| | - Céline Bonnet
- Laboratoire de génétique médicale, CHRU Nancy, Nancy, France
- Université de Lorraine, INSERM UMR_S1256, NGERE, F-54000, Nancy, France
| | - Marie Bournez
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon, Dijon, France
| | - Odile Boute
- CHU Lille, Clinique de génétique Guy Fontaine, F-59000, Lille, France
| | - Perrine Brunelle
- Univ. Lille, CHU Lille, ULR 7364 - RADEME - Institut de Génétique Médicale, F-59000, Lille, France
| | - Roseline Caumes
- CHU Lille, Clinique de génétique Guy Fontaine, F-59000, Lille, France
| | - Perrine Charles
- Département de génétique clinique, centre de référence des déficiences intellectuelles de causes rares, GHU Pitié Salpêtrière, Paris, France
| | | | - Nicolas Chatron
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
- Institute NeuroMyoGène, Laboratoire Physiopathologie et Génétique du Neurone et du Muscle, CNRS UMR 5261 -INSERM U1315, Université de Lyon - Université Claude Bernard Lyon 1, Lyon, France
| | - Benjamin Cogné
- Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France
- CHU Nantes, Service de Génétique Médicale, Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France
| | - Estelle Colin
- Service de Génétique Médicale, CHU Angers, Angers, France
| | - Valérie Cormier-Daire
- Service de médecine génomique des maladies rares, hôpital Necker Enfants Malades, Paris, France
- Université Paris Cité, INSERM UMR 1163, Institut Imagine, Paris, France
| | - Rodolphe Dard
- Génétique médicale, CHI Poissy-Saint-Germain-en-Laye, 78300, Poissy, France
| | - Benjamin Dauriat
- Service de cytogénétique et génétique médicale, Hôpital Mère Enfant, CHU Limoges, Limoges, France
| | - Julian Delanne
- Centre de Génétique et Centre de référence « Déficiences intellectuelles de causes rares », FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon, Dijon, France
- Équipe GAD, INSERM UMR1231, Université de Bourgogne, Dijon, France
| | - Jean-François Deleuze
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | | | - Anne-Sophie Denommé-Pichon
- Équipe GAD, INSERM UMR1231, Université de Bourgogne, Dijon, France
- Unité Fonctionnelle Innovation en Diagnostic génomique des maladies rares, FHU-TRANSLAD, CHU Dijon, Bourgogne, Dijon, France
| | - Christel Depienne
- Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Anne Dieux
- CHU Lille, Clinique de génétique Guy Fontaine, F-59000, Lille, France
| | - Christèle Dubourg
- Service de Génétique Moléculaire et Génomique, CHU Pontchaillou, Rennes, France
- Université de Rennes, IGDR (Institut de Génétique et Développement), CNRS UMR 6290, INSERM ERL 1305, Rennes, France
| | - Patrick Edery
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
- Université Claude Bernard Lyon 1, INSERM, CNRS, Centre de Recherche en Neurosciences de Lyon CRNL U1028 UMR5292, Genetics of Neurodevelopment (GENDEV) Team, 69500, Bron, France
| | - Salima El Chehadeh
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U1258, CNRS-UMR7104, Université de Strasbourg, Illkirch-Graffenstaden, France
- Laboratoire de Génétique Médicale, UMRS 1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg et INSERM, Strasbourg, France
| | - Laurence Faivre
- Centre de Génétique et Centre de référence « Déficiences intellectuelles de causes rares », FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon, Dijon, France
- Équipe GAD, INSERM UMR1231, Université de Bourgogne, Dijon, France
| | - Patricia Fergelot
- Department of Medical Genetics, University Hospital of Bordeaux and INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Mélanie Fradin
- Service de Génétique Clinique, Centre de Référence Anomalies du Développement de l'Ouest, CHU Rennes, Rennes, France
| | - Aurore Garde
- Centre de Génétique et Centre de référence « Déficiences intellectuelles de causes rares », FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon, Dijon, France
- Équipe GAD, INSERM UMR1231, Université de Bourgogne, Dijon, France
| | - David Geneviève
- Université Montpellier, Inserm U1183, Montpellier, France
- Centre de référence anomalies du développement et syndromes malformatifs, Génétique Clinique, CHU Montpellier, Montpellier, France
| | | | - Cyril Goizet
- NRGEN team, Univ. Bordeaux, CNRS, INCIA, UMR 5287, EPHE, F-33000, Bordeaux, France
- Centre de Référence Maladies Rares Neurogénétique, Service de Génétique Médicale, Bordeaux University Hospital (CHU Bordeaux), Bordeaux, France
| | - Alice Goldenberg
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Evan Gouy
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
- Génétique et neurobiologie de C.elegans, MéLis (CNRS UMR 5284 -INSERM U1314), Institut NeuroMyogene, Université Claude Bernard Lyon 1, Lyon, France
| | - Anne-Marie Guerrot
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Anne Guimier
- Service de médecine génomique des maladies rares - GHU Necker- Enfants malades, Paris, France
| | - Inès Harzalla
- Service de Génétique, CHU Hôpital Nord, Saint Etienne, France
| | - Delphine Héron
- APHP.Sorbonne Université, Département de Génétique, Hôpital Trousseau & Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Bertrand Isidor
- Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France
- CHU Nantes, Service de Génétique Médicale, Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France
| | - Didier Lacombe
- Department of Medical Genetics, University Hospital of Bordeaux and INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Xavier Le Guillou Horn
- CHU de Poitiers, Service de Génétique Médicale, F - 86000, Poitiers, France
- Université de Poitiers, CNRS 7348, LabCom I3M-Dactim mis / LMA, F-86000, Poitiers, France
| | - Boris Keren
- Département de génétique médicale, Hôpital Pitié-Salpêtrière, AP-HP.Sorbonne Université, 75013, Paris, France
| | - Alma Kuechler
- Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Elodie Lacaze
- Le Havre Hospital, Department of Medical Genetics, F 76600, Le Havre, France
| | - Alinoë Lavillaureix
- CHU Rennes, Service de Génétique Clinique, Centre de Référence Anomalies du développement, FHU GenOMedS, Univ Rennes, CNRS, INSERM, IGDR, UMR 6290, ERL U1305, Rennes, France
| | - Daphné Lehalle
- APHP.Sorbonne Université, Département de Génétique, Hôpital Trousseau & Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Gaëtan Lesca
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
| | - James Lespinasse
- UF de génétique médicale, Centre Hospitalier Métropole Savoie, BP 31135, 73011, Chambéry, France
| | - Jonathan Levy
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | - Stanislas Lyonnet
- Service de médecine génomique des maladies rares, Hôpital Universitaire Necker-Enfants malades, APHP, Paris, France
- Laboratoire embryologie et génétique des malformations, Institut Imagine, UMR-II63, INSERM, Université Paris Cité, GHU Necker- Enfants malades, Paris, France
| | - Godeliève Morel
- Service de Génétique Clinique, Centre de Référence Anomalies du Développement de l'Ouest, CHU Rennes, Rennes, France
| | - Nolwenn Jean-Marçais
- CHU Rennes, Service de Génétique Clinique, Centre de Référence Anomalies du développement, FHU GenOMedS, Rennes, France
| | - Sandrine Marlin
- Service de médecine génomique des maladies rares - GHU Necker- Enfants malades, Paris, France
| | - Luisa Marsili
- CHU Lille, Clinique de génétique Guy Fontaine, F-59000, Lille, France
| | - Cyril Mignot
- APHP.Sorbonne Université, Département de Génétique, Hôpital Trousseau & Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Sophie Nambot
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, Hôpital d'Enfants, CHU Dijon, Dijon, France
| | - Mathilde Nizon
- Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France
- CHU Nantes, Service de Génétique Médicale, Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France
| | - Robert Olaso
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | - Laurent Pasquier
- CHU Rennes, Service de Génétique Clinique, Centre de Référence Anomalies du développement, FHU GenOMedS, Rennes, France
| | - Laurine Perrin
- Médecine Physique et Réadaptation pédiatrique CHU Saint-Etienne, 42055, Saint-Etienne Cedex 2, France
| | - Florence Petit
- CHU Lille, Clinique de génétique Guy Fontaine, F-59000, Lille, France
- Univ. Lille, CHU Lille, ULR 7364 - RADEME - Institut de Génétique Médicale, F-59000, Lille, France
| | - Veronique Pingault
- Service de Médecine Génomique des maladies rares, AP-HP. Centre, Hôpital Necker-Enfants Malades, F-75015, Paris, France
- Université Paris Cité, Institut Imagine, Inserm U1163, F-75015, Paris, France
| | - Amélie Piton
- Laboratoire de diagnostic génétique, IGMA, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Fabienne Prieur
- Service de Génétique, CHU Hôpital Nord, Saint Etienne, France
| | - Audrey Putoux
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
- Université Claude Bernard Lyon 1, INSERM, CNRS, Centre de Recherche en Neurosciences de Lyon CRNL U1028 UMR5292, Genetics of Neurodevelopment (GENDEV) Team, 69500, Bron, France
| | - Marc Planes
- Service de Génétique Médicale et Biologie de la Reproduction, CHU de Brest, Brest, France
| | - Sylvie Odent
- CHU Rennes, Service de Génétique Clinique, Centre de Référence Anomalies du développement, FHU GenOMedS, Univ Rennes, CNRS, INSERM, IGDR, UMR 6290, ERL U1305, Rennes, France
| | - Chloé Quélin
- Service de Génétique Clinique, Centre de Référence Anomalies du Développement de l'Ouest, CHU Rennes, Rennes, France
| | - Sylvia Quemener-Redon
- Service de Génétique Médicale et Biologie de la Reproduction, CHU de Brest, Brest, France
- Univ Brest, Inserm, EFS, UMR 1078, GGB, F-29200, Brest, France
- Centre de Référence Déficiences Intellectuelles de causes rares, Brest, France
| | - Mélanie Rama
- CHU Lille - Institut de Génétique Médicale, F-59000, Lille, France
| | - Marlène Rio
- Service de médecine génomique des maladies rares - GHU Necker- Enfants malades, Paris, France
| | - Massimiliano Rossi
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
- Université Claude Bernard Lyon 1, INSERM, CNRS, Centre de Recherche en Neurosciences de Lyon CRNL U1028 UMR5292, Genetics of Neurodevelopment (GENDEV) Team, 69500, Bron, France
| | - Elise Schaefer
- Service de Génétique Médicale -Institut de Génétique Médicale d'Alsace - CHU Strasbourg, Strasbourg, France
| | - Sophie Rondeau
- Service de médecine génomique des maladies rares - GHU Necker- Enfants malades, Paris, France
| | - Pascale Saugier-Veber
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Thomas Smol
- Univ. Lille, CHU Lille, ULR 7364 - RADEME - Institut de Génétique Médicale, F-59000, Lille, France
- CHU Lille - Institut de Génétique Médicale, F-59000, Lille, France
| | - Sabine Sigaudy
- Aix Marseille Univ, INSERM, MMG, CRMR syndromes malformatifs et anomalies du développement, département de génétique, APHM Hopital Timone, Marseille, France
| | - Renaud Touraine
- Service de Génétique, CHU Hôpital Nord, Saint Etienne, France
| | - Frederic Tran Mau-Them
- Équipe GAD, INSERM UMR1231, Université de Bourgogne, Dijon, France
- Unité Fonctionnelle Innovation en Diagnostic génomique des maladies rares, FHU-TRANSLAD, CHU Dijon, Bourgogne, Dijon, France
| | - Aurélien Trimouille
- Service de Pathologie, CHU Bordeaux, Bordeaux, France
- Inserm U1211 MRGM, Université de Bordeaux, Bordeaux, France
| | - Julien Van Gils
- Department of Medical Genetics, University Hospital of Bordeaux and INSERM U1211, University of Bordeaux, Bordeaux, France
| | | | - Valérie Vantalon
- Centre d'Excellence InovAND-Service de psychiatrie de l'enfant et de l'adolescent-CHU Robert Debré, Paris, France
| | - Gabriella Vera
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, F-76000, Rouen, France
| | - Marie Vincent
- Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France
- CHU Nantes, Service de Génétique Médicale, Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France
| | - Alban Ziegler
- Service de Génétique Médicale, CHU Angers, Angers, France
| | - Olivier Guillin
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Psychiatry, F-76000, Rouen, France
| | - Dominique Campion
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Psychiatry, F-76000, Rouen, France
| | - Camille Charbonnier
- Univ Rouen Normandie, Inserm U1245 and CHU Rouen, Department of Biostatistics, F-76000, Rouen, France.
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6
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Lecoquierre F, Quenez O, Fourneaux S, Coutant S, Vezain M, Rolain M, Drouot N, Boland A, Olaso R, Meyer V, Deleuze JF, Dabbagh D, Gilles I, Gayet C, Saugier-Veber P, Goldenberg A, Guerrot AM, Nicolas G. High diagnostic potential of short and long read genome sequencing with transcriptome analysis in exome-negative developmental disorders. Hum Genet 2023; 142:773-783. [PMID: 37076692 DOI: 10.1007/s00439-023-02553-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 04/05/2023] [Indexed: 04/21/2023]
Abstract
Exome sequencing (ES) has become the method of choice for diagnosing rare diseases, while the availability of short-read genome sequencing (SR-GS) in a medical setting is increasing. In addition, new sequencing technologies, such as long-read genome sequencing (LR-GS) and transcriptome sequencing, are being increasingly used. However, the contribution of these techniques compared to widely used ES is not well established, particularly in regards to the analysis of non-coding regions. In a pilot study of five probands affected by an undiagnosed neurodevelopmental disorder, we performed trio-based short-read GS and long-read GS as well as case-only peripheral blood transcriptome sequencing. We identified three new genetic diagnoses, none of which affected the coding regions. More specifically, LR-GS identified a balanced inversion in NSD1, highlighting a rare mechanism of Sotos syndrome. SR-GS identified a homozygous deep intronic variant of KLHL7 resulting in a neoexon inclusion, and a de novo mosaic intronic 22-bp deletion in KMT2D, leading to the diagnosis of Perching and Kabuki syndromes, respectively. All three variants had a significant effect on the transcriptome, which showed decreased gene expression, mono-allelic expression and splicing defects, respectively, further validating the effect of these variants. Overall, in undiagnosed patients, the combination of short and long read GS allowed the detection of cryptic variations not or barely detectable by ES, making it a highly sensitive method at the cost of more complex bioinformatics approaches. Transcriptome sequencing is a valuable complement for the functional validation of variations, particularly in the non-coding genome.
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Affiliation(s)
- François Lecoquierre
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France.
| | - Olivier Quenez
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Steeve Fourneaux
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Sophie Coutant
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Myriam Vezain
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Marion Rolain
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Nathalie Drouot
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Anne Boland
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | - Robert Olaso
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | - Vincent Meyer
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | - Jean-François Deleuze
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | - Dana Dabbagh
- Department of Pediatrics, Elbeuf Hospital, Elbeuf, France
| | | | - Claire Gayet
- Department of Pediatrics, CHU Rouen, F-76000, Rouen, France
| | - Pascale Saugier-Veber
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Alice Goldenberg
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Anne-Marie Guerrot
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Gaël Nicolas
- Univ Rouen Normandie, Inserm U12045 and CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU-G4 Génomique, F-76000, Rouen, France.
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7
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Jacquemin V, Versbraegen N, Duerinckx S, Massart A, Soblet J, Perazzolo C, Deconinck N, Brischoux-Boucher E, De Leener A, Revencu N, Janssens S, Moorgat S, Blaumeiser B, Avela K, Touraine R, Abou Jaoude I, Keymolen K, Saugier-Veber P, Lenaerts T, Abramowicz M, Pirson I. Congenital hydrocephalus: new Mendelian mutations and evidence for oligogenic inheritance. Hum Genomics 2023; 17:16. [PMID: 36859317 PMCID: PMC9979489 DOI: 10.1186/s40246-023-00464-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND Congenital hydrocephalus is characterized by ventriculomegaly, defined as a dilatation of cerebral ventricles, and thought to be due to impaired cerebrospinal fluid (CSF) homeostasis. Primary congenital hydrocephalus is a subset of cases with prenatal onset and absence of another primary cause, e.g., brain hemorrhage. Published series report a Mendelian cause in only a minority of cases. In this study, we analyzed exome data of PCH patients in search of novel causal genes and addressed the possibility of an underlying oligogenic mode of inheritance for PCH. MATERIALS AND METHODS We sequenced the exome in 28 unrelated probands with PCH, 12 of whom from families with at least two affected siblings and 9 of whom consanguineous, thereby increasing the contribution of genetic causes. Patient exome data were first analyzed for rare (MAF < 0.005) transmitted or de novo variants. Population stratification of unrelated PCH patients and controls was determined by principle component analysis, and outliers identified using Mahalanobis distance 5% as cutoff. Patient and control exome data for genes biologically related to cilia (SYScilia database) were analyzed by mutation burden test. RESULTS In 18% of probands, we identify a causal (pathogenic or likely pathogenic) variant of a known hydrocephalus gene, including genes for postnatal, syndromic hydrocephalus, not previously reported in isolated PCH. In a further 11%, we identify mutations in novel candidate genes. Through mutation burden tests, we demonstrate a significant burden of genetic variants in genes coding for proteins of the primary cilium in PCH patients compared to controls. CONCLUSION Our study confirms the low contribution of Mendelian mutations in PCH and reports PCH as a phenotypic presentation of some known genes known for syndromic, postnatal hydrocephalus. Furthermore, this study identifies novel Mendelian candidate genes, and provides evidence for oligogenic inheritance implicating primary cilia in PCH.
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Affiliation(s)
- Valerie Jacquemin
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Brussels, Belgium.
| | - Nassim Versbraegen
- grid.4989.c0000 0001 2348 0746Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles-Vrije Universiteit Brussel, Brussels, Belgium ,grid.4989.c0000 0001 2348 0746Machine Learning Group, Université Libre de Bruxelles, Brussels, Belgium
| | - Sarah Duerinckx
- grid.4989.c0000 0001 2348 0746Service de Neuropédiatrie, Hôpital Universitaire de Bruxelles and CUB Hôpital Erasme and Université Libre de Bruxelles, Brussels, Belgium
| | - Annick Massart
- grid.4989.c0000 0001 2348 0746Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Brussels, Belgium ,grid.411414.50000 0004 0626 3418Department of Nephrology, University Hospital of Antwerp, Edegem, Belgium
| | - Julie Soblet
- grid.412157.40000 0000 8571 829XHuman Genetics Department, CUB Hôpital Erasme, Brussels, Belgium
| | - Camille Perazzolo
- grid.4989.c0000 0001 2348 0746Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Brussels, Belgium
| | - Nicolas Deconinck
- grid.412209.c0000 0004 0578 1002Hopital Universitaire des Enfants Reine Fabiola and Hopital Universitaire de Bruxelles and Université Libre de Bruxelles, Brussels, Belgium
| | - Elise Brischoux-Boucher
- grid.493090.70000 0004 4910 6615Centre de génétique humaine - CHU de Besançon, Université de Bourgogne-Franche-Comté, Besançon, France
| | - Anne De Leener
- grid.48769.340000 0004 0461 6320Centre de Génétique Humaine, Cliniques Universitaires Saint-Luc et Université Catholique de Louvain, Brussels, Belgium
| | - Nicole Revencu
- grid.48769.340000 0004 0461 6320Centre de Génétique Humaine, Cliniques Universitaires Saint-Luc et Université Catholique de Louvain, Brussels, Belgium
| | - Sandra Janssens
- grid.410566.00000 0004 0626 3303Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Stèphanie Moorgat
- grid.452439.d0000 0004 0578 0894Centre de Génétique Humaine, Institut de Pathologie et de Génétique, Gosselies, Belgium
| | - Bettina Blaumeiser
- grid.411414.50000 0004 0626 3418Center of Medical Genetics, Antwerp University and Antwerp University Hospital, Edegem, Belgium
| | - Kristiina Avela
- grid.15485.3d0000 0000 9950 5666Department of Clinical Genetics, Helsinki University Hospital, Helsinki, Finland
| | - Renaud Touraine
- grid.412954.f0000 0004 1765 1491Génétique Clinique Chromosomique et Moléculaire, CHU de Saint-Etienne, St-Priest-en-Jarez, France
| | - Imad Abou Jaoude
- Department of Gynecology and Obstetrics, Abou Jaoude Hospital, Jal El Dib, Lebanon
| | - Kathelijn Keymolen
- grid.411326.30000 0004 0626 3362Center for Medical Genetics, UZ Brussels, Jette, Belgium
| | - Pascale Saugier-Veber
- grid.10400.350000 0001 2108 3034Department of Genetics and Reference Center for Developmental Disorders, Université Rouen Normandie, Inserm U1245 and CHU Rouen, Rouen, France
| | - Tom Lenaerts
- grid.4989.c0000 0001 2348 0746Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles-Vrije Universiteit Brussel, Brussels, Belgium ,grid.4989.c0000 0001 2348 0746Machine Learning Group, Université Libre de Bruxelles, Brussels, Belgium ,grid.8767.e0000 0001 2290 8069Artificial Intelligence Lab, Vrije Universiteit Brussel, Brussels, Belgium
| | - Marc Abramowicz
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Brussels, Belgium. .,Department of Genetic Medicine and Development, University of Geneva, Geneva, Switzerland.
| | - Isabelle Pirson
- grid.4989.c0000 0001 2348 0746Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Brussels, Belgium
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8
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Vezain M, Thauvin-Robinet C, Vial Y, Coutant S, Drunat S, Urtizberea JA, Rolland A, Jacquin-Piques A, Fehrenbach S, Nicolas G, Lecoquierre F, Saugier-Veber P. Retrotransposon insertion as a novel mutational cause of spinal muscular atrophy. Hum Genet 2023; 142:125-138. [PMID: 36138164 DOI: 10.1007/s00439-022-02473-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/15/2022] [Indexed: 01/18/2023]
Abstract
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder resulting from biallelic alterations of the SMN1 gene: deletion, gene conversion or, in rare cases, intragenic variants. The disease severity is mainly influenced by the copy number of SMN2, a nearly identical gene, which produces only low amounts of full-length (FL) mRNA. Here we describe the first example of retrotransposon insertion as a pathogenic SMN1 mutational event. The 50-year-old patient is clinically affected by SMA type III with a diagnostic odyssey spanning nearly 30 years. Despite a mild disease course, he carries a single SMN2 copy. Using Exome Sequencing and Sanger sequencing, we characterized a SINE-VNTR-Alu (SVA) type F retrotransposon inserted in SMN1 intron 7. Using RT-PCR and RNASeq experiments on lymphoblastoid cell lines, we documented the dramatic decrease of FL transcript production in the patient compared to subjects with the same SMN1 and SMN2 copy number, thus validating the pathogenicity of this SVA insertion. We described the mutant FL-SMN1-SVA transcript characterized by exon extension and showed that it is subject to degradation by nonsense-mediated mRNA decay. The stability of the SMN-SVA protein may explain the mild course of the disease. This observation exemplifies the role of retrotransposons in human genetic disorders.
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Affiliation(s)
- Myriam Vezain
- INSERM UMR1245, UNIROUEN, Normandie Univ, F-76000, Rouen, France.,Department of Genetics, FHU G4 Génomique, Rouen University Hospital, F-76000, Rouen, France
| | - Christel Thauvin-Robinet
- INSERM UMR1231 GAD-Génétique des Anomalies du Développement, Bourgogne Franche-Comté University, F-21000 , Dijon, France.,Genetics Center, Fédération Hospitalo-Universitaire Médecine Translationnelle et Anomalies du Développement (TRANSLAD), Dijon-Burgundy University Hospital, F-21000, Dijon, France
| | - Yoann Vial
- INSERM UMR1245, UNIROUEN, Normandie Univ, F-76000, Rouen, France.,Department of Genetics, FHU G4 Génomique, Rouen University Hospital, F-76000, Rouen, France.,Genetics Department, AP-HP, Robert-Debré University Hospital, 48 boulevard Sérurier, 75019 , Paris, France
| | - Sophie Coutant
- INSERM UMR1245, UNIROUEN, Normandie Univ, F-76000, Rouen, France.,Department of Genetics, FHU G4 Génomique, Rouen University Hospital, F-76000, Rouen, France
| | - Séverine Drunat
- INSERM UMR 1141, PROTECT, Paris University, F-75019, Paris, France.,Genetics Department, AP-HP, Robert-Debré University Hospital, F-75019, Paris, France
| | - Jon Andoni Urtizberea
- Myology Institute, AP-HP Pitié-Salpêtrière University Hospital, F-75013, Paris, France
| | - Anne Rolland
- INSERM UMR1245, UNIROUEN, Normandie Univ, F-76000, Rouen, France.,Pediatrics Department, Valence Hospital, 179 boulevard du Maréchal Juin, 26000, Valence, France
| | - Agnès Jacquin-Piques
- Department of Neurology, Clinical Neurophysiology, Competence Center of Neuromuscular Diseases, Dijon-Burgundy University Hospital, F-21000, Dijon, France
| | - Séverine Fehrenbach
- Department of Genetics, FHU G4 Génomique, Rouen University Hospital, F-76000, Rouen, France
| | - Gaël Nicolas
- INSERM UMR1245, UNIROUEN, Normandie Univ, F-76000, Rouen, France.,Department of Genetics, FHU G4 Génomique, Rouen University Hospital, F-76000, Rouen, France
| | - François Lecoquierre
- INSERM UMR1245, UNIROUEN, Normandie Univ, F-76000, Rouen, France.,Department of Genetics, FHU G4 Génomique, Rouen University Hospital, F-76000, Rouen, France
| | - Pascale Saugier-Veber
- INSERM UMR1245, UNIROUEN, Normandie Univ, F-76000, Rouen, France. .,Department of Genetics, FHU G4 Génomique, Rouen University Hospital, F-76000, Rouen, France. .,Laboratoire de Génétique Moléculaire, UFR-Santé, 22 boulevard Gambetta, 76183, Rouen, France.
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9
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Deshwar AR, Cytrynbaum C, Murthy H, Zon J, Chitayat D, Volpatti J, Newbury-Ecob R, Ellard S, Lango Allen H, Yu EP, Noche R, Walker S, Scherer SW, Mahida S, Elitt CM, Nicolas G, Goldenberg A, Saugier-Veber P, Lecoquierre F, Dabaj I, Meddaugh H, Marble M, Keppler-Noreuil KM, Drayson L, Barañano KW, Chassevent A, Agre K, Létard P, Bilan F, Le Guyader G, Laquerrière A, Ramsey K, Henderson L, Brady L, Tarnopolsky M, Bainbridge M, Friedman J, Capri Y, Athayde L, Kok F, Gurgel-Giannetti J, Ramos LLP, Blaser S, Dowling JJ, Weksberg R. Variants in CLDN5 cause a syndrome characterized by seizures, microcephaly and brain calcifications. Brain 2022:6881740. [PMID: 36477332 DOI: 10.1093/brain/awac461] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 11/17/2022] [Accepted: 11/19/2022] [Indexed: 12/12/2022] Open
Abstract
The blood brain barrier ensures central nervous system homeostasis and protection from injury. Claudin-5 (CLDN5), an important component of tight junctions, is critical for the integrity of the BBB. We have identified de novo heterozygous missense variants in CLDN5 in fifteen unrelated patients who presented with a shared constellation of features including developmental delay, seizures (primarily infantile onset focal epilepsy), microcephaly and a recognizable pattern of pontine atrophy and brain calcifications. All variants clustered in one subregion/domain of the CLDN5 gene and the recurrent variants demonstrate genotype-phenotype correlations. We modeled both patient variants and loss of function alleles in the zebrafish to show that the variants analogous to those in patients likely result in a novel aberrant function in CLDN5. In total, human patient and zebrafish data provide parallel evidence that pathogenic sequence variants in CLDN5 cause a novel neurodevelopmental disorder involving disruption of the blood brain barrier and impaired neuronal function.
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Affiliation(s)
- Ashish R Deshwar
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Canada.,Genetics and Genome Biology, Research Institute, The Hospital for Sick Children, Toronto, Canada
| | - Cheryl Cytrynbaum
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Canada.,Genetics and Genome Biology, Research Institute, The Hospital for Sick Children, Toronto, Canada.,Department of Clinical Genetics, University Hospitals Bristol NHS Foundation Trust, Bristol, UK.,Molecular Genetics, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK
| | - Harsha Murthy
- Genetics and Genome Biology, Research Institute, The Hospital for Sick Children, Toronto, Canada
| | - Jessica Zon
- Genetics and Genome Biology, Research Institute, The Hospital for Sick Children, Toronto, Canada
| | - David Chitayat
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Canada
| | - Jonathan Volpatti
- Genetics and Genome Biology, Research Institute, The Hospital for Sick Children, Toronto, Canada
| | - Ruth Newbury-Ecob
- Department of Clinical Genetics, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Sian Ellard
- Molecular Genetics, Royal Devon & Exeter NHS Foundation Trust, Exeter, UK
| | - Hana Lango Allen
- MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Cambridge, UK
| | - Emily P Yu
- Zebrafish Genetics and Disease Models Core Facility, The Hospital for Sick Children, Toronto, Canada
| | - Ramil Noche
- Zebrafish Genetics and Disease Models Core Facility, The Hospital for Sick Children, Toronto, Canada
| | - Suzi Walker
- The Centre for Applied Genomics, Genetics, and Genome Biology, The Hospital for Sick Children, Toronto, Canada
| | - Stephen W Scherer
- Genetics and Genome Biology, Research Institute, The Hospital for Sick Children, Toronto, Canada.,The Centre for Applied Genomics, Genetics, and Genome Biology, The Hospital for Sick Children, Toronto, Canada
| | - Sonal Mahida
- Epilepsy Genetics Program, Department of Neurology, Boston Children's Hospital, Boston, USA
| | - Christopher M Elitt
- Fetal-Neonatal Neurology Program, Department of Neurology, Boston Children's Hospital, Boston, USA.,F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, USA.,Department of Neurology, Harvard Medical School, Boston, USA
| | - Gaël Nicolas
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Alice Goldenberg
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Pascale Saugier-Veber
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Francois Lecoquierre
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Ivana Dabaj
- Department of Neonatology and Pediatric Intensive Care-Pediatric Neurology, Rouen University Hospital, and Inserm U1245, Normandie University, UNIROUEN, Rouen, France
| | | | - Michael Marble
- Children's Hospital of New Orleans, New Orleans, USA.,Louisiana State University Health Sciences Center, Department of Pediatrics, New Orleans, USA
| | | | - Lucy Drayson
- Pediatric Specialists of Virginia, Virginia, USA
| | - Kristin W Barañano
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, USA
| | | | | | - Pascaline Létard
- Service de Génétique, CHU de Poitiers, CS 90577 - 86021 Poitiers Cedex, France
| | - Frederic Bilan
- Service de Génétique, CHU de Poitiers, CS 90577 - 86021 Poitiers Cedex, France.,EA3808 NEUVACOD, University of Poitiers, Poitiers, France
| | - Gwenaël Le Guyader
- Service de Génétique, CHU de Poitiers, CS 90577 - 86021 Poitiers Cedex, France.,EA3808 NEUVACOD, University of Poitiers, Poitiers, France
| | - Annie Laquerrière
- Normandie Univ, UNIROUEN, INSERM U1245 and Rouen University Hospital, Department of Pathology, F76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Keri Ramsey
- Translational Genomics Research Institute, Center for Rare Childhood Disorders, Phoenix, USA
| | | | - Lauren Brady
- Department of Pediatrics, McMaster University, Hamilton, Canada
| | | | | | - Jennifer Friedman
- Rady Children's Institute for Genomic Medicine, San Diego, USA.,Departments of Neurosciences and Pediatrics, University of California San Diego, San Diego, USA
| | - Yline Capri
- Département de Génétique, Assistance Publique des Hôpitaux de Paris (AP-HP) Hôpital Robert Debré, Paris, France
| | | | | | | | | | - Susan Blaser
- Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Canada
| | - James J Dowling
- Genetics and Genome Biology, Research Institute, The Hospital for Sick Children, Toronto, Canada.,Division of Neurology, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Rosanna Weksberg
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Canada.,Genetics and Genome Biology, Research Institute, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Toronto, Canada.,Institutes of Medical Sciences, University of Toronto, Toronto, Canada
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10
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Coursimault J, Cassinari K, Lecoquierre F, Quenez O, Coutant S, Derambure C, Vezain M, Drouot N, Vera G, Schaefer E, Philippe A, Doray B, Lambert L, Ghoumid J, Smol T, Rama M, Legendre M, Lacombe D, Fergelot P, Olaso R, Boland A, Deleuze JF, Goldenberg A, Saugier-Veber P, Nicolas G. Deep intronic NIPBL de novo mutations and differential diagnoses revealed by whole genome and RNA sequencing in Cornelia de Lange syndrome patients. Hum Mutat 2022; 43:1882-1897. [PMID: 35842780 DOI: 10.1002/humu.24438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/23/2022] [Accepted: 07/09/2022] [Indexed: 01/25/2023]
Abstract
Cornelia de Lange syndrome (CdLS; MIM# 122470) is a rare developmental disorder. Pathogenic variants in 5 genes explain approximately 50% cases, leaving the other 50% unsolved. We performed whole genome sequencing (WGS) ± RNA sequencing (RNA-seq) in 5 unsolved trios fulfilling the following criteria: (i) clinical diagnosis of classic CdLS, (ii) negative gene panel sequencing from blood and saliva-isolated DNA, (iii) unaffected parents' DNA samples available and (iv) proband's blood-isolated RNA available. A pathogenic de novo mutation (DNM) was observed in a CdLS differential diagnosis gene in 3/5 patients, namely POU3F3, SPEN, and TAF1. In the other two, we identified two distinct deep intronic DNM in NIPBL predicted to create a novel splice site. RT-PCRs and RNA-Seq showed aberrant transcripts leading to the creation of a novel frameshift exon. Our findings suggest the relevance of WGS in unsolved suspected CdLS cases and that deep intronic variants may account for a proportion of them.
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Affiliation(s)
- Juliette Coursimault
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Kévin Cassinari
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - François Lecoquierre
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Olivier Quenez
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Sophie Coutant
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Céline Derambure
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Myriam Vezain
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Nathalie Drouot
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Gabriella Vera
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Elise Schaefer
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Anaïs Philippe
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Bérénice Doray
- Service de Génétique Médicale, Centre Hospitalier Universitaire Félix Guyon, Bellepierre Saint Denis, France
| | - Laëtitia Lambert
- Service de Génétique Clinique, CHRU NANCY, F-54000 France, UMR INSERM U 1256 N-GERE, F-54000, Nancy, France
| | - Jamal Ghoumid
- Université de Lille, ULR7364 RADEME, CHU Lille, Clinique de Génétique « Guy Fontaine », and FHU-G4 Génomique, F-59000, Lille, France
| | - Thomas Smol
- Université de Lille, ULR7364 RADEME, CHU Lille, Institut de Génétique Médicale, and FHU-G4 Génomique, F-59000, Lille, France
| | - Mélanie Rama
- Institut de Génétique Médicale, CHU de Lille, France
| | - Marine Legendre
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Didier Lacombe
- INSERM U1211, Université de Bordeaux; Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Patricia Fergelot
- INSERM U1211, Université de Bordeaux; Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Robert Olaso
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | - Anne Boland
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | - Jean-François Deleuze
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine (CNRGH), 91057, Evry, France
| | - Alice Goldenberg
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Pascale Saugier-Veber
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
| | - Gaël Nicolas
- Normandie Univ, UNIROUEN, Inserm U1245 and CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU-G4 Génomique, F-76000, Rouen, France
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11
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Coursimault J, Goldenberg A, Nicolas G, Saugier-Veber P, Coutant S, Vincent A, Pouliquen D, Feltin C, Aref-Eshghi E, Sadikovic B, Lecoquierre F. Contribution of DNA methylation profiling to the reclassification of a variant of uncertain significance in the KDM5C gene. Eur J Med Genet 2022; 65:104556. [PMID: 35781022 DOI: 10.1016/j.ejmg.2022.104556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/21/2022] [Accepted: 06/27/2022] [Indexed: 11/03/2022]
Abstract
KDM5C encodes a demethylase of the histone H3 lysine 4 residue, involved in chromatin regulation and gene expression. Hemizygous KDM5C pathogenic variants cause X-linked intellectual disability of Claes-Jensen type. Because of its mode of inheritance and the low specificity of the clinical phenotype, interpretation of variants can be difficult, hence the need for functional studies and biomarkers specific to this disorder. We present the case of a male patient with intellectual disability, behavioral abnormalities and subtle dysmorphic features, in which genetic investigation identified a hemizygous novel missense KDM5C variant of uncertain significance (VUS), inherited from his asymptomatic mother and present in his paucisymptomatic sister. We assessed the global genomic DNA methylation status from a whole blood sample of the proband. Global DNA methylation profiling specifically identified the recently discovered epi-signature of Claes-Jensen syndrome. This result served as a biomarker which independently highlighted KDM5C as the cause of the disorder in this patient. Because of the X-linked mode of inheritance, variant reclassification had a high impact on genetic counseling in this family. This example highlights the value of global methylome profiling in situations of variants of uncertain significance in genes with a known specific epi-signature.
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Affiliation(s)
- Juliette Coursimault
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Alice Goldenberg
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Gaël Nicolas
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Pascale Saugier-Veber
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Sophie Coutant
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Anne Vincent
- Reference Centre for Learning Disorders, Rouen University Hospital, F-76031 Rouen Cedex, France; Department of Neonatology and Paediatric Intensive Care, Rouen University Hospital, F-76031 Cedex, France
| | | | - Cécile Feltin
- Institut de Psychiatrie - Centre Hospitalier du Rouvray, Sotteville-lès-Rouen, France
| | - Erfan Aref-Eshghi
- Division of Genomic Diagnostics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Bekim Sadikovic
- Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada; Canada and Verspeeten Clinical Genome Centre, London Health Sciences, London, Ontario, Canada
| | - François Lecoquierre
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, F-76000, Rouen, France.
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12
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Lehalle D, Bruel AL, Vitobello A, Denommé-Pichon AS, Duffourd Y, Assoum M, Amiel J, Baujat G, Bessieres B, Bigoni S, Burglen L, Captier G, Dard R, Edery P, Fortunato F, Geneviève D, Goldenberg A, Guibaud L, Héron D, Holder-Espinasse M, Lederer D, Lopez Grondona F, Grotto S, Marlin S, Nadeau G, Picard A, Rossi M, Roume J, Sanlaville D, Saugier-Veber P, Triau S, Valenzuela Palafoll MI, Vanlerberghe C, Van Maldergem L, Vezain M, Vincent-Delorme C, Zivi E, Thevenon J, Vabres P, Thauvin-Robinet C, Callier P, Faivre L. Toward clinical and molecular dissection of frontonasal dysplasia with facial skin polyps: From Pai syndrome to differential diagnosis through a series of 27 patients. Am J Med Genet A 2022; 188:2036-2047. [PMID: 35445792 DOI: 10.1002/ajmg.a.62739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 10/20/2021] [Accepted: 11/02/2021] [Indexed: 11/07/2022]
Abstract
Unique or multiple congenital facial skin polyps are features of several rare syndromes, from the most well-known Pai syndrome (PS), to the less recognized oculoauriculofrontonasal syndrome (OAFNS), encephalocraniocutaneous lipomatosis (ECCL), or Sakoda complex (SC). We set up a research project aiming to identify the molecular bases of PS. We reviewed 27 individuals presenting with a syndromic frontonasal polyp and initially referred for PS. Based on strict clinical classification criteria, we could confirm only nine (33%) typical and two (7%) atypical PS individuals. The remaining ones were either OAFNS (11/27-41%) or presenting with an overlapping syndrome (5/27-19%). Because of the phenotypic overlap between these entities, OAFNS, ECCL, and SC can be either considered as differential diagnosis of PS or part of the same spectrum. Exome and/or genome sequencing from blood DNA in 12 patients and from affected tissue in one patient failed to identify any replication in candidate genes. Taken together, our data suggest that conventional approaches routinely utilized for the identification of molecular etiologies responsible for Mendelian disorders are inconclusive. Future studies on affected tissues and multiomics studies will thus be required in order to address either the contribution of mosaic or noncoding variation in these diseases.
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Affiliation(s)
- Daphné Lehalle
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, FHU TRANSLAD, Centre Hospitalier Universitaire Dijon, Dijon, France
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
- Unité Fonctionnelle d'Innovation diagnostique des maladies rares, Pôle de Biologie, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
- Département de Génétique, AP-HP, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Ange-Line Bruel
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
- Unité Fonctionnelle d'Innovation diagnostique des maladies rares, Pôle de Biologie, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | - Antonio Vitobello
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
- Unité Fonctionnelle d'Innovation diagnostique des maladies rares, Pôle de Biologie, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | - Anne-Sophie Denommé-Pichon
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
- Unité Fonctionnelle d'Innovation diagnostique des maladies rares, Pôle de Biologie, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | - Yannis Duffourd
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
- Unité Fonctionnelle d'Innovation diagnostique des maladies rares, Pôle de Biologie, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | - Mirna Assoum
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Jeanne Amiel
- Service de Génétique, INSERM U781, Hôpital Necker-Enfants Malades, Institut Imagine, University Sorbonne-Paris-Cité, Paris, France
| | - Geneviève Baujat
- Service de Génétique, INSERM U781, Hôpital Necker-Enfants Malades, Institut Imagine, University Sorbonne-Paris-Cité, Paris, France
| | - Bettina Bessieres
- Unite d'embryofoetopathologie, Service d'Histologie-Embryologie-Cytogénétique, Hôpital Necker-Enfants Malades APHP, Paris, France
| | - Stefania Bigoni
- UOL of Medical Genetics, Ferrara Hospital University, Ferrara, Italy
| | - Lydie Burglen
- Département de Génétique et Centre de Référence "malformations et maladies congénitales du cervelet," AP-HP, Hôpital Trousseau, Paris, France
| | - Guillaume Captier
- Service de chirurgie orthopédique et plastique pédiatrique, Hôpital Lapeyronie, CHU Montpellier, Montpellier, France
| | - Rodolphe Dard
- Service de Cytogénétique, Centre Hospitalier Intercommunal de Poissy Saint-Germain-en-Laye, Poissy, France
| | - Patrick Edery
- Service de génétique et Centre de Référence des Anomalies du développement de la région Auvergne-Rhône-Alpes, CHU de Lyon, Lyon, France
- Centre de Recherche en Neurosciences de Lyon, INSERM U1028 CNRS UMR 5292, UCB Lyon 1, Villeurbanne, France
| | | | - David Geneviève
- Genetic Department for Rare Disease and Personalised Medicine, Clinical Division, Montpellier University, Inserm U1183, Montpellier, France
| | - Alice Goldenberg
- Department of Genetics, Rouen University Hospital, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Laurent Guibaud
- Centre de Recherche en Neurosciences de Lyon, INSERM U1028 CNRS UMR 5292, UCB Lyon 1, Villeurbanne, France
| | - Delphine Héron
- Department of Genetics, Intellectual Disability and Autism Clinical Research Group, Pierre and Marie Curie University, Pitié-Salpêtrière Hospital, Public Hospital Network of Paris, Paris, France
| | - Muriel Holder-Espinasse
- Department of Clinical Genetics, CHU Lille, Lille, France
- Clinical Genetics Department, Guy's Hospital, London, UK
| | - Damien Lederer
- Center for Human Genetics, Institut de Pathologie et Génétique (I.p.G.), Gosselies, Belgium
| | - Fermina Lopez Grondona
- Àrea de Genètica Clínica i Malalties Minoritàries, Hospital Vall d'Hebron, Barcelona, Spain
| | - Sarah Grotto
- Genetic Department for Rare Disease and Personalised Medicine, Clinical Division, Montpellier University, Inserm U1183, Montpellier, France
| | - Sandrine Marlin
- Laboratory of Embryology and Genetics of Malformations, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1163, Institut Imagine, Université de Paris, Paris, Spain
| | - Gwenaël Nadeau
- Unité fonctionnelle de cytogénétique, CH de Valence, Valence, France
| | - Arnaud Picard
- Service de Chirurgie Maxillofaciale, Hôpital Necker, Paris, France
| | - Massimiliano Rossi
- Service de Cytogénétique, Centre Hospitalier Intercommunal de Poissy Saint-Germain-en-Laye, Poissy, France
- Service de génétique et Centre de Référence des Anomalies du développement de la région Auvergne-Rhône-Alpes, CHU de Lyon, Lyon, France
| | - Joëlle Roume
- Service de chirurgie orthopédique et plastique pédiatrique, Hôpital Lapeyronie, CHU Montpellier, Montpellier, France
| | - Damien Sanlaville
- Service de Cytogénétique, Centre Hospitalier Intercommunal de Poissy Saint-Germain-en-Laye, Poissy, France
- Service de génétique et Centre de Référence des Anomalies du développement de la région Auvergne-Rhône-Alpes, CHU de Lyon, Lyon, France
| | - Pascale Saugier-Veber
- Department of Genetics, Normandy Centre for Genomic and Personalized Medicine, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Rouen, France
| | | | | | | | | | - Myriam Vezain
- Department of Genetics, Normandy Centre for Genomic and Personalized Medicine, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Rouen, France
| | | | - Einat Zivi
- Medical Genetics Institute, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Julien Thevenon
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, FHU TRANSLAD, Centre Hospitalier Universitaire Dijon, Dijon, France
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Pierre Vabres
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
- Service de Dermatologie, CHU Dijon, Dijon, France
| | - Christel Thauvin-Robinet
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, FHU TRANSLAD, Centre Hospitalier Universitaire Dijon, Dijon, France
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
- Unité Fonctionnelle d'Innovation diagnostique des maladies rares, Pôle de Biologie, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | - Patrick Callier
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Laurence Faivre
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, FHU TRANSLAD, Centre Hospitalier Universitaire Dijon, Dijon, France
- Equipe GAD, INSERM LNC UMR 1231, FHU TRANSLAD, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
- Unité Fonctionnelle d'Innovation diagnostique des maladies rares, Pôle de Biologie, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
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13
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Coursimault J, Rovelet-Lecrux A, Cassinari K, Brischoux-Boucher E, Saugier-Veber P, Goldenberg A, Lecoquierre F, Drouot N, Richard AC, Vera G, Coutant S, Quenez O, Rolain M, Bonnet C, Bronner M, Lecourtois M, Nicolas G. uORF-introducing variants in the 5'UTR of the NIPBL gene as a cause of Cornelia de Lange syndrome. Hum Mutat 2022; 43:1239-1248. [PMID: 35446447 DOI: 10.1002/humu.24384] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 04/08/2022] [Accepted: 04/13/2022] [Indexed: 11/08/2022]
Abstract
Cornelia de Lange syndrome (CdLS) is a clinically-recognizable rare developmental disorder. About 70% of patients carry a missense or loss-of-function pathogenic variant in the NIPBL gene. We hypothesized that some variants in the 5' Untranslated Region (UTR) of NIPBL may create an upstream open reading frame (uORF), putatively leading to a loss of function. We searched for NIPBL 5'UTR variants potentially introducing uORF by (i) reannotating NGS data of 102 unsolved CdLS patients and (ii) literature and variant databases search. We set up a GFP reporter assay and studied NIPBL expression in a lymphoblastoid cell line (LCL). We identified two variants introducing a novel ATG codon sequence in the 5'UTR of NIPBL, both predicted to introduce uORF: a novel c.-457_-456delinsAT de novo mutation in a 15-year-old male with classic CdLS, and a c.-94C>T variant in a published family. Our reporter assay showed a significant decrease of GFP levels in both mutant contexts, with similar levels of mRNA as compared to wt constructs. Assessment of LCL of one patient showed consistent results with decreased NIPBL protein and unchanged mRNA levels. 5'UTR uORF-introducing NIPBL variants may represent a rare source of pathogenic variants in unsolved CdLS patients. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Juliette Coursimault
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Anne Rovelet-Lecrux
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Kévin Cassinari
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | | | - Pascale Saugier-Veber
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Alice Goldenberg
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - François Lecoquierre
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Nathalie Drouot
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Anne-Claire Richard
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Gabriella Vera
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Sophie Coutant
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Olivier Quenez
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Marion Rolain
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Céline Bonnet
- Department of Genetics, Nancy University Hospital, Nancy, France
| | - Myriam Bronner
- Department of Genetics, Nancy University Hospital, Nancy, France
| | - Magalie Lecourtois
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
| | - Gaël Nicolas
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000, Rouen, France
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14
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Coursimault J, Guerrot AM, Morrow MM, Schramm C, Zamora FM, Shanmugham A, Liu S, Zou F, Bilan F, Le Guyader G, Bruel AL, Denommé-Pichon AS, Faivre L, Tran Mau-Them F, Tessarech M, Colin E, El Chehadeh S, Gérard B, Schaefer E, Cogne B, Isidor B, Nizon M, Doummar D, Valence S, Héron D, Keren B, Mignot C, Coutton C, Devillard F, Alaix AS, Amiel J, Colleaux L, Munnich A, Poirier K, Rio M, Rondeau S, Barcia G, Callewaert B, Dheedene A, Kumps C, Vergult S, Menten B, Chung WK, Hernan R, Larson A, Nori K, Stewart S, Wheless J, Kresge C, Pletcher BA, Caumes R, Smol T, Sigaudy S, Coubes C, Helm M, Smith R, Morrison J, Wheeler PG, Kritzer A, Jouret G, Afenjar A, Deleuze JF, Olaso R, Boland A, Poitou C, Frebourg T, Houdayer C, Saugier-Veber P, Nicolas G, Lecoquierre F. MYT1L-associated neurodevelopmental disorder: description of 40 new cases and literature review of clinical and molecular aspects. Hum Genet 2021; 141:65-80. [PMID: 34748075 DOI: 10.1007/s00439-021-02383-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/30/2021] [Indexed: 12/20/2022]
Abstract
Pathogenic variants of the myelin transcription factor-1 like (MYT1L) gene include heterozygous missense, truncating variants and 2p25.3 microdeletions and cause a syndromic neurodevelopmental disorder (OMIM#616,521). Despite enrichment in de novo mutations in several developmental disorders and autism studies, the data on clinical characteristics and genotype-phenotype correlations are scarce, with only 22 patients with single nucleotide pathogenic variants reported. We aimed to further characterize this disorder at both the clinical and molecular levels by gathering a large series of patients with MYT1L-associated neurodevelopmental disorder. We collected genetic information on 40 unreported patients with likely pathogenic/pathogenic MYT1L variants and performed a comprehensive review of published data (total = 62 patients). We confirm that the main phenotypic features of the MYT1L-related disorder are developmental delay with language delay (95%), intellectual disability (ID, 70%), overweight or obesity (58%), behavioral disorders (98%) and epilepsy (23%). We highlight novel clinical characteristics, such as learning disabilities without ID (30%) and feeding difficulties during infancy (18%). We further describe the varied dysmorphic features (67%) and present the changes in weight over time of 27 patients. We show that patients harboring highly clustered missense variants in the 2-3-ZNF domains are not clinically distinguishable from patients with truncating variants. We provide an updated overview of clinical and genetic data of the MYT1L-associated neurodevelopmental disorder, hence improving diagnosis and clinical management of these patients.
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Affiliation(s)
- Juliette Coursimault
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, FHU G4 Génomique, F-76000, Rouen, France
| | - Anne-Marie Guerrot
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, FHU G4 Génomique, F-76000, Rouen, France
| | | | - Catherine Schramm
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, FHU G4 Génomique, F-76000, Rouen, France
| | | | | | | | | | - Frédéric Bilan
- Service de Génétique, Centre Hospitalier Universitaire de Poitiers, BP577, 86021, Poitiers, France
| | - Gwenaël Le Guyader
- Service de Génétique, Centre Hospitalier Universitaire de Poitiers, BP577, 86021, Poitiers, France
| | - Ange-Line Bruel
- UMR1231 GAD, Inserm - Université Bourgogne-Franche Comté, Dijon, France.,Unité Fonctionnelle Innovation en Diagnostic Génomique des Maladies Rares, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | - Anne-Sophie Denommé-Pichon
- UMR1231 GAD, Inserm - Université Bourgogne-Franche Comté, Dijon, France.,Unité Fonctionnelle Innovation en Diagnostic Génomique des Maladies Rares, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | - Laurence Faivre
- UMR1231 GAD, Inserm - Université Bourgogne-Franche Comté, Dijon, France.,Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Inter-Région est, FHU TRANSLAD, CHU Dijon-Bourgogne, Dijon, France
| | - Frédéric Tran Mau-Them
- UMR1231 GAD, Inserm - Université Bourgogne-Franche Comté, Dijon, France.,Unité Fonctionnelle Innovation en Diagnostic Génomique des Maladies Rares, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | | | - Estelle Colin
- Service de Génétique Médicale, CHU d'Angers, Angers, France.,Univ Angers, [CHU Angers], INSERM, CNRS, MITOVASC, ICAT, 49000, Angers, SFR, France
| | - Salima El Chehadeh
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | - Bénédicte Gérard
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | - Elise Schaefer
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | - Benjamin Cogne
- Service de Génétique Médicale, CHU Nantes, Nantes, France
| | | | - Mathilde Nizon
- Service de Génétique Médicale, CHU Nantes, Nantes, France
| | - Diane Doummar
- Hôpital Trousseau, APHP.Sorbonne Université, Service de Neuropédiatrie, Paris, France
| | - Stéphanie Valence
- Hôpital Trousseau, APHP.Sorbonne Université, Service de Neuropédiatrie, Paris, France
| | - Delphine Héron
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière-Hôpital Trousseau Centre de Référence Déficiences Intellectuelles de Causes Rares, APHP.Sorbonne Université, Paris, France
| | - Boris Keren
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière-Hôpital Trousseau Centre de Référence Déficiences Intellectuelles de Causes Rares, APHP.Sorbonne Université, Paris, France
| | - Cyril Mignot
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière-Hôpital Trousseau Centre de Référence Déficiences Intellectuelles de Causes Rares, APHP.Sorbonne Université, Paris, France
| | - Charles Coutton
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, UMR 5309, CNRS, Université Grenoble Alpes, Inserm U1209, Grenoble, France
| | | | - Anne-Sophie Alaix
- Department of Genetics, IHU Necker-Enfants Malades, University Paris Descartes, Paris, France
| | - Jeanne Amiel
- Department of Genetics, IHU Necker-Enfants Malades, University Paris Descartes, Paris, France
| | - Laurence Colleaux
- Department of Genetics, IHU Necker-Enfants Malades, University Paris Descartes, Paris, France
| | - Arnold Munnich
- Department of Genetics, IHU Necker-Enfants Malades, University Paris Descartes, Paris, France
| | - Karine Poirier
- Department of Genetics, IHU Necker-Enfants Malades, University Paris Descartes, Paris, France
| | - Marlène Rio
- Department of Genetics, IHU Necker-Enfants Malades, University Paris Descartes, Paris, France
| | - Sophie Rondeau
- Department of Genetics, IHU Necker-Enfants Malades, University Paris Descartes, Paris, France
| | - Giulia Barcia
- Department of Genetics, IHU Necker-Enfants Malades, University Paris Descartes, Paris, France
| | - Bert Callewaert
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Annelies Dheedene
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Candy Kumps
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Sarah Vergult
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Björn Menten
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Wendy K Chung
- Columbia University Irving Medical Center, New York, NY, USA
| | - Rebecca Hernan
- Columbia University Irving Medical Center, New York, NY, USA
| | - Austin Larson
- School of Medicine and Children's Hospital, University of Colorado, Aurora, CO, USA
| | - Kelly Nori
- School of Medicine and Children's Hospital, University of Colorado, Aurora, CO, USA
| | - Sarah Stewart
- School of Medicine and Children's Hospital, University of Colorado, Aurora, CO, USA
| | - James Wheless
- Division of Pediatric Neurology, University of Tennessee, Health Science Center, Memphis, USA
| | - Christina Kresge
- Division of Clinical Genetics, Rutgers New Jersey Medical School, Newark, USA
| | - Beth A Pletcher
- Division of Clinical Genetics, Rutgers New Jersey Medical School, Newark, USA
| | - Roseline Caumes
- Université de Lille, CHU de Lille, Clinique de Génétique « Guy Fontaine », EA7364 RADEMEF-59000, Lille, France
| | - Thomas Smol
- Université de Lille, CHU de Lille, Institut de Génétique Médicale, EA7364 RADEMEF-59000, Lille, France
| | - Sabine Sigaudy
- Département de Génétique Médicale, Hôpital Timone Enfant, Marseille, France
| | - Christine Coubes
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, CHU Montpellier, Montpellier, France
| | - Margaret Helm
- Department of Pediatrics, Division of Genetics. Portland, Maine Medical Center, Maine, USA
| | - Rosemarie Smith
- Department of Pediatrics, Division of Genetics. Portland, Maine Medical Center, Maine, USA
| | | | | | - Amy Kritzer
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Guillaume Jouret
- National Center of Genetics (NCG), Laboratoire National de Santé (LNS), L-3555, Dudelange, Luxembourg
| | - Alexandra Afenjar
- Centre de Référence Malformations et Maladies Congénitales du Cervelet et Déficiences Intellectuelles de Causes Rares, Département de Génétique et Embryologie Médicale, APHP. Sorbonne Université, Hôpital Trousseau, 75012, Paris, France
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine (CNRGH), Université Paris-Saclay, CEA, 91057, Evry, France
| | - Robert Olaso
- Centre National de Recherche en Génomique Humaine (CNRGH), Université Paris-Saclay, CEA, 91057, Evry, France
| | - Anne Boland
- Centre National de Recherche en Génomique Humaine (CNRGH), Université Paris-Saclay, CEA, 91057, Evry, France
| | - Christine Poitou
- Service de Nutrition, Hôpital de la Pitié Salpêtrière - AP-HP, Paris, France
| | - Thierry Frebourg
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, FHU G4 Génomique, F-76000, Rouen, France
| | - Claude Houdayer
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, FHU G4 Génomique, F-76000, Rouen, France
| | - Pascale Saugier-Veber
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, FHU G4 Génomique, F-76000, Rouen, France
| | - Gaël Nicolas
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, FHU G4 Génomique, F-76000, Rouen, France
| | - François Lecoquierre
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, FHU G4 Génomique, F-76000, Rouen, France.
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de la Banda MGG, Grimaldi-Bensouda L, Urtizberea J, Behin A, Vuillerot C, Saugier-Veber P, Audic F, Barnerias C, Cances C, Campana-Salort E, Espil C, Laforet P, Laugel V, Pereon Y, Sacconi S, Stojkovic T, Tard C, Chabrol B, Desguerre I, Quijano-Roy S. SMA – OUTCOME MEASURES AND REGISTRIES. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Marguet F, Vezain M, Marcorelles P, Audebert-Bellanger S, Cassinari K, Drouot N, Chambon P, Gonzalez BJ, Horowitz A, Laquerriere A, Saugier-Veber P. Neuropathological hallmarks of fetal hydrocephalus linked to CCDC88C pathogenic variants. Acta Neuropathol Commun 2021; 9:104. [PMID: 34092257 PMCID: PMC8183048 DOI: 10.1186/s40478-021-01207-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 05/29/2021] [Indexed: 01/05/2023] Open
Abstract
The prevalence of congenital hydrocephalus has been estimated at 1.1 per 1000 infants when including cases diagnosed before 1 year of age after exclusion of neural tube defects. Classification criteria are based either on CSF dynamics, pathophysiological mechanisms or associated lesions. Whereas inherited syndromic hydrocephalus has been associated with more than 100 disease-causing genes, only four genes are currently known to be linked to congenital hydrocephalus either isolated or as a major clinical feature: L1CAM, AP1S2, MPDZ and CCDC88C. In the past 10 years, pathogenic variants in CCDC88C have been documented but the neuropathology remains virtually unknown. We report the neuropathology of two foetuses from one family harbouring two novel compound heterozygous pathogenic variants in the CCDC88C gene: a maternally inherited indel in exon 22, c.3807_3809delinsACCT;p.(Gly1270Profs*53) and a paternally inherited deletion of exon 23, c.3967-?_c.4112-?;p.(Leu1323Argfs*10). Medical termination of pregnancy was performed at 18 and 23 weeks of gestation for severe bilateral ventriculomegaly. In both fetuses, brain lesions consisted of multifocal atresia-forking along the aqueduct of Sylvius and the central canal of the medulla, periventricular neuronal heterotopias and choroid plexus hydrops. The second fetus also presented lumbar myelomeningocele, left diaphragmatic hernia and bilateral renal agenesis. CCDC88C encodes the protein DAPLE which contributes to ependymal cell planar polarity by inhibiting the non-canonical Wnt signaling pathway and interacts with MPDZ and PARD3. Interestingly, heterozygous variants in PARD3 result in neural tube defects by defective tight junction formation and polarization process of the neuroepithelium. Besides, during organ formation Wnt signalling is a prerequisite for planar cell polarity pathway activation, and mutations in planar cell polarity genes lead to heart, lung and kidney malformations. Hence, candidate variants in CCDC88C should be carefully considered whether brain lesions are isolated or associated with malformations suspected to result from disorders of planar cell polarity.
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Aref-Eshghi E, Kerkhof J, Pedro VP, France GDI, Barat-Houari M, Ruiz-Pallares N, Andrau JC, Lacombe D, Van-Gils J, Fergelot P, Dubourg C, Cormier-Daire V, Rondeau S, Lecoquierre F, Saugier-Veber P, Nicolas G, Lesca G, Chatron N, Sanlaville D, Vitobello A, Faivre L, Thauvin-Robinet C, Laumonnier F, Raynaud M, Alders M, Mannens M, Henneman P, Hennekam RC, Velasco G, Francastel C, Ulveling D, Ciolfi A, Pizzi S, Tartaglia M, Heide S, Héron D, Mignot C, Keren B, Whalen S, Afenjar A, Bienvenu T, Campeau PM, Rousseau J, Levy MA, Brick L, Kozenko M, Balci TB, Siu VM, Stuart A, Kadour M, Masters J, Takano K, Kleefstra T, de Leeuw N, Field M, Shaw M, Gecz J, Ainsworth PJ, Lin H, Rodenhiser DI, Friez MJ, Tedder M, Lee JA, DuPont BR, Stevenson RE, Skinner SA, Schwartz CE, Genevieve D, Sadikovic B. Evaluation of DNA Methylation Episignatures for Diagnosis and Phenotype Correlations in 42 Mendelian Neurodevelopmental Disorders. Am J Hum Genet 2021; 108:1161-1163. [PMID: 34087165 DOI: 10.1016/j.ajhg.2021.04.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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18
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Tebani A, Sudrié-Arnaud B, Dabaj I, Torre S, Domitille L, Snanoudj S, Heron B, Levade T, Caillaud C, Vergnaud S, Saugier-Veber P, Coutant S, Dranguet H, Froissart R, Al Khouri M, Alembik Y, Baruteau J, Arnoux JB, Brassier A, Brehin AC, Busa T, Cano A, Chabrol B, Coubes C, Desguerre I, Doco-Fenzy M, Drenou B, Elcioglu NH, Elsayed S, Fouilhoux A, Poirsier C, Goldenberg A, Jouvencel P, Kuster A, Labarthe F, Lazaro L, Pichard S, Rivera S, Roche S, Roggerone S, Roubertie A, Sigaudy S, Spodenkiewicz M, Tardieu M, Vanhulle C, Marret S, Bekri S. Disentangling molecular and clinical stratification patterns in beta-galactosidase deficiency. J Med Genet 2021; 59:377-384. [PMID: 33737400 DOI: 10.1136/jmedgenet-2020-107510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/16/2021] [Accepted: 01/19/2021] [Indexed: 11/04/2022]
Abstract
INTRODUCTION This study aims to define the phenotypic and molecular spectrum of the two clinical forms of β-galactosidase (β-GAL) deficiency, GM1-gangliosidosis and mucopolysaccharidosis IVB (Morquio disease type B, MPSIVB). METHODS Clinical and genetic data of 52 probands, 47 patients with GM1-gangliosidosis and 5 patients with MPSIVB were analysed. RESULTS The clinical presentations in patients with GM1-gangliosidosis are consistent with a phenotypic continuum ranging from a severe antenatal form with hydrops fetalis to an adult form with an extrapyramidal syndrome. Molecular studies evidenced 47 variants located throughout the sequence of the GLB1 gene, in all exons except 7, 11 and 12. Eighteen novel variants (15 substitutions and 3 deletions) were identified. Several variants were linked specifically to early-onset GM1-gangliosidosis, late-onset GM1-gangliosidosis or MPSIVB phenotypes. This integrative molecular and clinical stratification suggests a variant-driven patient assignment to a given clinical and severity group. CONCLUSION This study reports one of the largest series of b-GAL deficiency with an integrative patient stratification combining molecular and clinical features. This work contributes to expand the community knowledge regarding the molecular and clinical landscapes of b-GAL deficiency for a better patient management.
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Affiliation(s)
- Abdellah Tebani
- Department of Metabolic Biochemistry, Rouen University Hospital, Rouen, France.,Normandie Univ, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | | | - Ivana Dabaj
- Normandie Univ, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, Normandy Center for Genomic and Personalized Medicine, Rouen, France.,Department of Neonatal Pediatrics, Intensive Care and Neuropediatrics, Rouen University Hospital, Rouen, France
| | - Stéphanie Torre
- Department of Neonatal Pediatrics, Intensive Care and Neuropediatrics, Rouen University Hospital, Rouen, France
| | - Laur Domitille
- Pediatric Neurology Department, Robert Debré Hospital, Public Hospital Network of Paris, Paris, France
| | - Sarah Snanoudj
- Department of Metabolic Biochemistry, Rouen University Hospital, Rouen, France.,Normandie Univ, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Benedicte Heron
- Reference Center for Lysosomal Diseases, Pediatric Neurology Department, UH Armand Trousseau-La Roche Guyon, APHP, GUEP, Paris, France
| | - Thierry Levade
- Laboratoire de Biochimie Métabolique, Institut Fédératif de Biologie, CHU Purpan, Toulouse, France.,Cancer Research Center, INSERM UMR1037 CRCT, Toulouse, France
| | - Catherine Caillaud
- Biochemistry, Metabolomic and Proteomic Department, Necker Enfants Malades University Hospital, Assistance Publique Hôpitaux de Paris, UMRS 1151, INSERM, Institute Necker Enfants Malades, Paris Descartes University, Paris, France
| | - Sabrina Vergnaud
- UF Maladies Héréditaires Enzymatiques Rares-CGD, Institut de Biologie et de Pathologies, CHU de Grenoble Alpes, Grenoble, France
| | - Pascale Saugier-Veber
- Normandie Univ, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Sophie Coutant
- Department of Genetics, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, F76000, Normandy Centre for Genomic and Personalized Medicine, ROUEN, France
| | - Hélène Dranguet
- Department of Metabolic Biochemistry, Rouen University Hospital, Rouen, France
| | - Roseline Froissart
- Biochemical and Molecular Biology Department, Centre de Biologie et de Pathologie Est Hospices Civils de Lyon, Lyon, France
| | - Majed Al Khouri
- Department of Pediatric Gastroenterology, hepatology and Nutrition, University hospital of Montpellier, Montpellier, France
| | - Yves Alembik
- Department of Clinical Genetic, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Julien Baruteau
- Metabolic Medicine Department, Great Ormond Street Hospital for Children NHS Foundation Trust, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Jean-Baptiste Arnoux
- Department of Inherited Metabolic Disease, Necker-Enfants Malades University Hospital, AP-HP, Paris, France
| | - Anais Brassier
- Reference Center of Inherited Metabolic Diseases, Necker Enfants Malades Hospital, Imagine Institute, University Paris Descartes, Paris, France
| | - Anne-Claire Brehin
- Normandie Univ, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Tiffany Busa
- Département de Génétique Médicale, Hôpital Timone Enfant, Marseille, France
| | - Aline Cano
- Centre de Référence des Maladies Héréditaires du Métabolisme, Service de Neuropédiatrie, CHU La Timone Enfants, APHM, Marseille, France
| | - Brigitte Chabrol
- Centre de Référence des Maladies Héréditaires du Métabolisme, Service de Neuropédiatrie, CHU La Timone Enfants, APHM, Marseille, France
| | - Christine Coubes
- Genetic Services, A. de Villeneuve Hospital, Montpellier, France
| | - Isabelle Desguerre
- Department of Paediatric Neurology, Hopital universitaire Necker-Enfants malades Service de Pediatrie generale, Paris, Île-de-France, France
| | - Martine Doco-Fenzy
- Service de génétique, CHRU Reims, Reims, France.,EA3801, UFR médecine, France
| | - Bernard Drenou
- Department of Hematolog, Hôpital Emile Muller - CH de Mulhouse, Mulhouse, France
| | - Nursel H Elcioglu
- Pediatric Genetics, Marmara University Medical School, Istanbul, Turkey
| | - Solaf Elsayed
- Genetics, Children's Hospital, Ain Shams University, Cairo, Egypt
| | - Alain Fouilhoux
- Department of Pediatric Metabolism, Reference Center of Inherited Metabolic Disorders, Femme Mère Enfant Hospital, Lyon, France
| | - Céline Poirsier
- Genetic department, CHU-Reims, EA3801, SFR CAP santé, Reims, France
| | - Alice Goldenberg
- Department of Genetics, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, F76000, Normandy Centre for Genomic and Personalized Medicine, ROUEN, France
| | - Philippe Jouvencel
- Department of Neonatology and Paediatrics, Centre Hospitalier de la Côte Basque, Bayonne, France
| | - Alice Kuster
- Pediatric Critical Care Unit, Femme-Enfants-Adolescents Hospital, Nantes University, Nantes, France
| | | | - Leila Lazaro
- Department of Neonatology and Paediatrics, Centre Hospitalier de la Côte Basque, Bayonne, France
| | - Samia Pichard
- Reference Centre for Inborn Errors of Metabolism, Robert-Debré University Hospital, APHP, Paris, France
| | - Serge Rivera
- Department of Neonatology and Paediatrics, Centre Hospitalier de la Côte Basque, Bayonne, France
| | - Sandrine Roche
- Department of Pediatrics, Bordeaux University Hospital, Bordeaux, France
| | | | - Agathe Roubertie
- INSERM U 1051, Institut des Neurosciences de Montpellier, Montpellier, Hérault, France.,Département de Neuropédiatrie, CHU Gui de Chauliac, Montpellier, France
| | - Sabine Sigaudy
- Genetics, Hôpital d'Enfants de la Timone, Marseille, France
| | | | - Marine Tardieu
- Department of Pediatrics, Reference Center of Inherited Metabolic Disorders, Clocheville Hospital, Tours, France
| | - Catherine Vanhulle
- Department of Neonatal Pediatrics, Intensive Care and Neuropediatrics, Rouen University Hospital, Rouen, France
| | - Stéphane Marret
- Normandie Univ, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, Normandy Center for Genomic and Personalized Medicine, Rouen, France.,Department of Neonatal Pediatrics, Intensive Care and Neuropediatrics, Rouen University Hospital, Rouen, France
| | - Soumeya Bekri
- Normandie Univ, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, Normandy Center for Genomic and Personalized Medicine, Rouen, France .,Department of Metabolic Biochemistry, University Hospital Centre Rouen, Rouen, Normandie, France
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Dabaj I, Sudrié-Arnaud B, Lecoquierre F, Raymond K, Ducatez F, Guerrot AM, Snanoudj S, Coutant S, Saugier-Veber P, Marret S, Nicolas G, Tebani A, Bekri S. NGLY1 Deficiency: A Rare Newly Described Condition with a Typical Presentation. Life (Basel) 2021; 11:life11030187. [PMID: 33673403 PMCID: PMC7996810 DOI: 10.3390/life11030187] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 12/12/2022] Open
Abstract
NGLY1 deficiency is the first recognized autosomal recessive disorder of N-linked deglycosylation (NGLY1-CDDG). This severe multisystemic disease is still poorly known and, to date, most cases have been diagnosed through whole exome or genome sequencing. The aim of this study is to provide the clinical, biochemical and molecular description of the first NGLY1-CDDG patient from France along with a literature review. The index case presented with developmental delay, acquired microcephaly, hypotonia, alacrimia, feeding difficulty, and dysmorphic features. Given the complex clinical picture and the multisystemic involvement, a trio-based exome sequencing was conducted and urine oligosaccharides were assessed using mass spectrometry. The exome sequencing revealed a novel variant in the NGLY1 gene in a homozygous state. NGLY1 deficiency was confirmed by the identification of the Neu5Ac1Hex1GlcNAc1-Asn oligosaccharide in the urine of the patient. Literature review revealed the association of some key clinical and biological features such as global developmental delay-hypertransaminasemia, movement disorders, feeding difficulties and alacrima/hypolacrima.
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Affiliation(s)
- Ivana Dabaj
- Department of Neonatal Pediatrics, Intensive Care and Neuropediatrics, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (I.D.); (F.D.); (S.M.)
| | - Bénédicte Sudrié-Arnaud
- Department of Metabolic Biochemistry, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (B.S.-A.); (S.S.); (A.T.)
| | - François Lecoquierre
- Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (F.L.); (A.-M.G.); (S.C.); (P.S.-V.); (G.N.)
| | - Kimiyo Raymond
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55902, USA;
| | - Franklin Ducatez
- Department of Neonatal Pediatrics, Intensive Care and Neuropediatrics, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (I.D.); (F.D.); (S.M.)
| | - Anne-Marie Guerrot
- Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (F.L.); (A.-M.G.); (S.C.); (P.S.-V.); (G.N.)
| | - Sarah Snanoudj
- Department of Metabolic Biochemistry, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (B.S.-A.); (S.S.); (A.T.)
| | - Sophie Coutant
- Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (F.L.); (A.-M.G.); (S.C.); (P.S.-V.); (G.N.)
| | - Pascale Saugier-Veber
- Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (F.L.); (A.-M.G.); (S.C.); (P.S.-V.); (G.N.)
| | - Stéphane Marret
- Department of Neonatal Pediatrics, Intensive Care and Neuropediatrics, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (I.D.); (F.D.); (S.M.)
| | - Gaël Nicolas
- Department of Genetics and Reference Center for Developmental Disorders, FHU G4 Génomique, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (F.L.); (A.-M.G.); (S.C.); (P.S.-V.); (G.N.)
| | - Abdellah Tebani
- Department of Metabolic Biochemistry, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (B.S.-A.); (S.S.); (A.T.)
| | - Soumeya Bekri
- Department of Metabolic Biochemistry, Normandie University, UNIROUEN, CHU Rouen, INSERM U1245, 76000 Rouen, France; (B.S.-A.); (S.S.); (A.T.)
- Correspondence:
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Coursimault J, Lecoquierre F, Saugier-Veber P, Drouin-Garraud V, Lechevallier J, Boland A, Deleuze JF, Frebourg T, Nicolas G, Brehin AC. Hypersociability associated with developmental delay, macrocephaly and facial dysmorphism points to CHD3 mutations. Eur J Med Genet 2021; 64:104166. [PMID: 33571694 DOI: 10.1016/j.ejmg.2021.104166] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 01/22/2021] [Accepted: 02/04/2021] [Indexed: 02/02/2023]
Abstract
CHD3-related syndrome, also known as Snijders Blok-Campeau syndrome, is a rare developmental disorder described in 2018, caused by de novo pathogenic variants in the CHD3 gene. This syndrome is characterized by global developmental delay, speech delay, intellectual disability, hypotonia and behavioral disorders including autism spectrum disorder (ASD). Typical dysmorphic features include macrocephaly, hypertelorism, enophthalmia, sparse eyebrows, bulging forehead, midface hypoplasia, prominent nose and pointed chin. To our knowledge, there have been no other clinical descriptions of patients since the initial publication. We report the clinical description of a 21-year-old patient harboring a pathogenic de novo variant in CHD3. We reviewed the clinical features of the 35 previously reported patients. Main features were severe intellectual disability, dysmorphic facies, macrocephaly, cryptorchidism, pectus carinatum, severe ophthalmologic abnormalities and behavioral disorders including ASD, and a frank happy demeanor. Hypersociability, which was a noticeable clinical feature in our case, despite ASD, is an uncommon behavioral feature in syndromic intellectual disabilities. Our report supports hypersociability as a suggestive feature of CHD3-related syndrome along with developmental delay, macrocephaly and a dysmorphic facies.
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Affiliation(s)
- Juliette Coursimault
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000 Rouen, France
| | - François Lecoquierre
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000 Rouen, France
| | - Pascale Saugier-Veber
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000 Rouen, France
| | | | - Joël Lechevallier
- Department of Pediatric Surgery, Rouen University Hospital, F-76000, Rouen, France
| | - Anne Boland
- Centre National de Recherche en Génomique Humaine, Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine, Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Thierry Frebourg
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000 Rouen, France
| | - Gaël Nicolas
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000 Rouen, France
| | - Anne-Claire Brehin
- Normandie Univ, UNIROUEN, Inserm U1245, CHU Rouen, Department of Genetics and reference center for developmental disorders, FHU G4 Génomique, F-76000 Rouen, France.
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Horowitz A, Saugier-Veber P, Gilard V. Inference of Diagnostic Markers and Therapeutic Targets From CSF Proteomics for the Treatment of Hydrocephalus. Front Cell Neurosci 2020; 14:576028. [PMID: 33192320 PMCID: PMC7609871 DOI: 10.3389/fncel.2020.576028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 09/08/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Arie Horowitz
- Normandy University, UNIROUEN, INSERM U1245, Rouen, France
| | - Pascale Saugier-Veber
- Department of Genetics and Reference Center for Developmental Disorders, Normandie University, UNIROUEN, INSERM U1245 and Rouen University Hospital, Rouen, France
| | - Vianney Gilard
- Department of Neurosurgery, Normandy University, UNIROUEN, INSERM U1245 and Rouen University Hospital, Rouen, France
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22
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Gomez-Garcia de la Banda M, Grimaldi L, Urtizberea J, Behin A, Vuillerot C, Saugier-Veber P, Audic F, Barnerias C, Cances C, Campana-Salort E, Spil C, Laforet P, Laugel V, Pereon Y, Sacconi S, Stojkovic T, Tard C, Chabrol B, Desguerre I, Quijano-Roy S. SMA: REGISTRIES, BIOMARKERS & OUTCOME MEASURES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Aref-Eshghi E, Kerkhof J, Pedro VP, Barat-Houari M, Ruiz-Pallares N, Andrau JC, Lacombe D, Van-Gils J, Fergelot P, Dubourg C, Cormier-Daire V, Rondeau S, Lecoquierre F, Saugier-Veber P, Nicolas G, Lesca G, Chatron N, Sanlaville D, Vitobello A, Faivre L, Thauvin-Robinet C, Laumonnier F, Raynaud M, Alders M, Mannens M, Henneman P, Hennekam RC, Velasco G, Francastel C, Ulveling D, Ciolfi A, Pizzi S, Tartaglia M, Heide S, Héron D, Mignot C, Keren B, Whalen S, Afenjar A, Bienvenu T, Campeau PM, Rousseau J, Levy MA, Brick L, Kozenko M, Balci TB, Siu VM, Stuart A, Kadour M, Masters J, Takano K, Kleefstra T, de Leeuw N, Field M, Shaw M, Gecz J, Ainsworth PJ, Lin H, Rodenhiser DI, Friez MJ, Tedder M, Lee JA, DuPont BR, Stevenson RE, Skinner SA, Schwartz CE, Genevieve D, Sadikovic B, Sadikovic B. Evaluation of DNA Methylation Episignatures for Diagnosis and Phenotype Correlations in 42 Mendelian Neurodevelopmental Disorders. Am J Hum Genet 2020; 106:356-370. [PMID: 32109418 DOI: 10.1016/j.ajhg.2020.01.019] [Citation(s) in RCA: 142] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 01/27/2020] [Indexed: 01/24/2023] Open
Abstract
Genetic syndromes frequently present with overlapping clinical features and inconclusive or ambiguous genetic findings which can confound accurate diagnosis and clinical management. An expanding number of genetic syndromes have been shown to have unique genomic DNA methylation patterns (called "episignatures"). Peripheral blood episignatures can be used for diagnostic testing as well as for the interpretation of ambiguous genetic test results. We present here an approach to episignature mapping in 42 genetic syndromes, which has allowed the identification of 34 robust disease-specific episignatures. We examine emerging patterns of overlap, as well as similarities and hierarchical relationships across these episignatures, to highlight their key features as they are related to genetic heterogeneity, dosage effect, unaffected carrier status, and incomplete penetrance. We demonstrate the necessity of multiclass modeling for accurate genetic variant classification and show how disease classification using a single episignature at a time can sometimes lead to classification errors in closely related episignatures. We demonstrate the utility of this tool in resolving ambiguous clinical cases and identification of previously undiagnosed cases through mass screening of a large cohort of subjects with developmental delays and congenital anomalies. This study more than doubles the number of published syndromes with DNA methylation episignatures and, most significantly, opens new avenues for accurate diagnosis and clinical assessment in individuals affected by these disorders.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Bekim Sadikovic
- Molecular Genetics Laboratory, Molecular Diagnostics Division, London Health Sciences Centre, London, ON N6A5W9, Canada; Department of Pathology and Laboratory Medicine, Western University, London, ON N6A3K7, Canada.
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24
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Moradkhani K, Cuisset L, Boisseau P, Pichon O, Lebrun M, Hamdi-Rozé H, Maurin ML, Gruchy N, Manca-Pellissier MC, Malzac P, Bilan F, Audrezet MP, Saugier-Veber P, Fauret-Amsellem AL, Missirian C, Kuentz P, Egea G, Guichet A, Creveaux I, Janel C, Harzallah I, Touraine R, Goumy C, Joyé N, Puechberty J, Haquet E, Chantot-Bastaraud S, Schmitt S, Gosset P, Duban-Bedu B, Delobel B, Vago P, Vialard F, Gomes DM, Siffroi JP, Bonnefont JP, Dupont JM, Jonveaux P, Doco-Fenzy M, Sanlaville D, Le Caignec C. Risk estimation of uniparental disomy of chromosome 14 or 15 in a fetus with a parent carrying a non-homologous Robertsonian translocation. Should we still perform prenatal diagnosis? Prenat Diagn 2019; 39:986-992. [PMID: 31273809 DOI: 10.1002/pd.5518] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/07/2019] [Accepted: 06/28/2019] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Uniparental disomy (UPD) testing is currently recommended during pregnancy in fetuses carrying a balanced Robertsonian translocation (ROB) involving chromosome 14 or 15, both chromosomes containing imprinted genes. The overall risk that such a fetus presents a UPD has been previously estimated to be around ~0.6-0.8%. However, because UPD are rare events and this estimate has been calculated from a number of studies of limited size, we have reevaluated the risk of UPD in fetuses for whom one of the parents was known to carry a nonhomologous ROB (NHROB). METHOD We focused our multicentric study on NHROB involving chromosome 14 and/or 15. A total of 1747 UPD testing were performed in fetuses during pregnancy for the presence of UPD(14) and/or UPD(15). RESULT All fetuses were negative except one with a UPD(14) associated with a maternally inherited rob(13;14). CONCLUSION Considering these data, the risk of UPD following prenatal diagnosis of an inherited ROB involving chromosome 14 and/or 15 could be estimated to be around 0.06%, far less than the previous estimation. Importantly, the risk of miscarriage following an invasive prenatal sampling is higher than the risk of UPD. Therefore, we do not recommend prenatal testing for UPD for these pregnancies and parents should be reassured.
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Affiliation(s)
| | - Laurence Cuisset
- Laboratory of Genetics and Molecular Biology, Institute Cochin and Cochin Hospital, APHP, Paris Descartes University, Paris, France
| | | | - Olivier Pichon
- Service de Génétique Médicale, CHU Nantes, Nantes, France
| | - Marine Lebrun
- Service de Génétique-Laboratoire de Biologie Moléculaire, CHU-Hôpital Nord, Saint-Etienne, France
| | - Houda Hamdi-Rozé
- Department of Molecular Genetics and Genomics, CHU Rennes, Rennes, France
| | - Marie-Laure Maurin
- Service d'Histologie, Embryologie, Cytogénétique., Groupe Hospitalier Necker-Enfants Malades, Paris, France
| | - Nicolas Gruchy
- Service de Génétique, CHU Caen, Université Caen Normandie, Caen, France
| | | | - Perrine Malzac
- Département de Génétique Médicale, Assistance Publique- Hôpitaux de Marseille, Marseille, France
| | | | | | - Pascale Saugier-Veber
- Department of Genetics, Normandy Centre for Genomic Medicine and Personalized Medicine, Rouen University Hospital, Rouen, France
| | - Anne-Laure Fauret-Amsellem
- Department of Genetics, Robert-Debré Teaching Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Chantal Missirian
- Département de Génétique Médicale, Assistance Publique- Hôpitaux de Marseille, Marseille, France
| | - Paul Kuentz
- Génétique Biologique Histologie, Centre Hospitalier Universitaire de Besançon, Besançon, France
| | - Gregory Egea
- Laboratoire de Biologie Médicale GEN-BIO, Clermont-Ferrand, France
| | | | - Isabelle Creveaux
- Department of Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Caroline Janel
- Department of Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Ines Harzallah
- Service de Génétique-Laboratoire de Biologie Moléculaire, CHU-Hôpital Nord, Saint-Etienne, France
| | - Renaud Touraine
- Service de Génétique-Laboratoire de Biologie Moléculaire, CHU-Hôpital Nord, Saint-Etienne, France
| | - Carole Goumy
- Cytogénétique Médicale, CHU Estaing, Clermont-Ferrand, France.,U1240 Imagerie Moléculaire et Stratégies Théranostiques, Université Clermont Auvergne, INSERM, Clermont-Ferrand, France
| | - Nicole Joyé
- Physiopathologie des Maladies Génétiques d'Expression Pédiatrique, Sorbonne Université, INSERM, Paris, France
| | - Jacques Puechberty
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Hôpital Arnaud de Villeneuve, CHU de Montpellier, Montpellier, France
| | - Emmanuelle Haquet
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Hôpital Arnaud de Villeneuve, CHU de Montpellier, Montpellier, France
| | | | | | - Philippe Gosset
- Diagnostic Préimplantatoire, Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Bénédicte Duban-Bedu
- Centre de Génétique Chromosomique, GH de l'Institut Catholique de Lille-Hopital Saint Vincent de Paul, Lille, France
| | - Bruno Delobel
- Centre de Génétique Chromosomique, GH de l'Institut Catholique de Lille-Hopital Saint Vincent de Paul, Lille, France
| | - Philippe Vago
- Cytogénétique Médicale, CHU Estaing, Clermont-Ferrand, France.,U1240 Imagerie Moléculaire et Stratégies Théranostiques, Université Clermont Auvergne, INSERM, Clermont-Ferrand, France
| | - François Vialard
- Unité de Cytogénétique, CHI de Poissy St Germain en Laye, Poissy, France.,EA7404-GIG, UFR des Sciences de la Santé Simone Veil, UVSQ, Montigny-le-Bretonneux, France
| | - Denise Molina Gomes
- Unité de Cytogénétique, CHI de Poissy St Germain en Laye, Poissy, France.,EA7404-GIG, UFR des Sciences de la Santé Simone Veil, UVSQ, Montigny-le-Bretonneux, France
| | - Jean-Pierre Siffroi
- Physiopathologie des Maladies Génétiques d'Expression Pédiatrique, Sorbonne Université, INSERM, Paris, France
| | - Jean-Paul Bonnefont
- Service d'Histologie, Embryologie, Cytogénétique., Groupe Hospitalier Necker-Enfants Malades, Paris, France
| | - Jean-Michel Dupont
- Laboratoire de Cytogénétique, HUPC Hôpital Cochin, APHP; Université Paris Descartes, Paris, France
| | - Philippe Jonveaux
- Laboratoire de Génétique, CHRU Nancy, Inserm U1256, Université de Lorraine, Nancy, France
| | - Martine Doco-Fenzy
- Service de Génétique, CHU REIMS, EA3801, UFR de Médecine REIMS, Reims, France
| | - Damien Sanlaville
- Department of Genetics, Lyon University Hospitals, Lyon, France.,Claude Bernard Lyon I University; Lyon Neuroscience Research Centre, CNRS UMR5292, INSERM, Lyon, France
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25
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Yang J, Simonneau C, Kilker R, Oakley L, Byrne MD, Nichtova Z, Stefanescu I, Pardeep-Kumar F, Tripathi S, Londin E, Saugier-Veber P, Willard B, Thakur M, Pickup S, Ishikawa H, Schroten H, Smeyne R, Horowitz A. Murine MPDZ-linked hydrocephalus is caused by hyperpermeability of the choroid plexus. EMBO Mol Med 2019; 11:emmm.201809540. [PMID: 30518636 PMCID: PMC6328942 DOI: 10.15252/emmm.201809540] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Though congenital hydrocephalus is heritable, it has been linked only to eight genes, one of which is MPDZ. Humans and mice that carry a truncated version of MPDZ incur severe hydrocephalus resulting in acute morbidity and lethality. We show by magnetic resonance imaging that contrast medium penetrates into the brain ventricles of mice carrying a Mpdz loss‐of‐function mutation, whereas none is detected in the ventricles of normal mice, implying that the permeability of the choroid plexus epithelial cell monolayer is abnormally high. Comparative proteomic analysis of the cerebrospinal fluid of normal and hydrocephalic mice revealed up to a 53‐fold increase in protein concentration, suggesting that transcytosis through the choroid plexus epithelial cells of Mpdz KO mice is substantially higher than in normal mice. These conclusions are supported by ultrastructural evidence, and by immunohistochemistry and cytology data. Our results provide a straightforward and concise explanation for the pathophysiology of Mpdz‐linked hydrocephalus.
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Affiliation(s)
- Junning Yang
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Claire Simonneau
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Robert Kilker
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Laura Oakley
- Department of Neuroscience, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Matthew D Byrne
- Department of Neuroscience, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Zuzana Nichtova
- Department of Pathology, Anatomy and Cell Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ioana Stefanescu
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Fnu Pardeep-Kumar
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Sushil Tripathi
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Eric Londin
- Computational Medicine Center, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | | | - Belinda Willard
- Proteomics Core Facility, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Mathew Thakur
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Stephen Pickup
- Department of Radiology, University of Pennsylvania Medical School, Philadelphia, PA, USA
| | - Hiroshi Ishikawa
- Laboratory of Clinical Regenerative Medicine, Department of Neurosurgery, Faculty of Medicine University of Tsukuba, Tsukuba-City, Ibaraki, Japan
| | - Horst Schroten
- Pediatric Infectious Diseases, University Children's Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Richard Smeyne
- Department of Neuroscience, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Arie Horowitz
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA .,Department of Cancer Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
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26
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Chatron N, Cassinari K, Quenez O, Baert-Desurmont S, Bardel C, Buisine MP, Calpena E, Capri Y, Corominas Galbany J, Diguet F, Edery P, Isidor B, Labalme A, Le Caignec C, Lévy J, Lecoquierre F, Lindenbaum P, Pichon O, Rollat-Farnier PA, Simonet T, Saugier-Veber P, Tabet AC, Toutain A, Wilkie AOM, Lesca G, Sanlaville D, Nicolas G, Schluth-Bolard C. Identification of mobile retrocopies during genetic testing: Consequences for routine diagnosis. Hum Mutat 2019; 40:1993-2000. [PMID: 31230393 DOI: 10.1002/humu.23845] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/29/2019] [Accepted: 06/17/2019] [Indexed: 12/24/2022]
Abstract
Human retrocopies, that is messenger RNA transcripts benefitting from the long interspersed element 1 machinery for retrotransposition, may have specific consequences for genomic testing. Next genetration sequencing (NGS) techniques allow the detection of such mobile elements but they may be misinterpreted as genomic duplications or be totally overlooked. We report eight observations of retrocopies detected during diagnostic NGS analyses of targeted gene panels, exome, or genome sequencing. For seven cases, while an exons-only copy number gain was called, read alignment inspection revealed a depth of coverage shift at every exon-intron junction where indels were also systematically called. Moreover, aberrant chimeric read pairs spanned entire introns or were paired with another locus for terminal exons. The 8th retrocopy was present in the reference genome and thus showed a normal NGS profile. We emphasize the existence of retrocopies and strategies to accurately detect them at a glance during genetic testing and discuss pitfalls for genetic testing.
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Affiliation(s)
- Nicolas Chatron
- Genetics Department, Hospices Civils de Lyon, Lyon, France.,GENDEV Team, CRNL, INSERM U1028, CNRS UMR5292, UCBL1, Lyon, France
| | - Kevin Cassinari
- Department of Genetics and CNR-MAJ, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Olivier Quenez
- Department of Genetics and CNR-MAJ, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Stéphanie Baert-Desurmont
- Department of Genetics, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Claire Bardel
- Bioinformatics group of the Lyon University Hospital NGS facility, Groupement Hospitalier Est, Lyon, France.,Biostatistics and Bioinformatics Department, HCL, Lyon, France
| | - Marie-Pierre Buisine
- Department of Biochemistry and Molecular Biology, JPA Research Center, Inserm UMR-S 1172, Lille University, Lille University Hospital, Lille, France
| | - Eduardo Calpena
- Clinical Genetics Group, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Yline Capri
- Genetics Department, Clinical Genetics Unit, Hôpital Universitaire Robert Debré, Paris, France
| | | | - Flavie Diguet
- Genetics Department, Hospices Civils de Lyon, Lyon, France.,GENDEV Team, CRNL, INSERM U1028, CNRS UMR5292, UCBL1, Lyon, France
| | - Patrick Edery
- Genetics Department, Hospices Civils de Lyon, Lyon, France.,GENDEV Team, CRNL, INSERM U1028, CNRS UMR5292, UCBL1, Lyon, France
| | | | - Audrey Labalme
- Genetics Department, Hospices Civils de Lyon, Lyon, France
| | - Cedric Le Caignec
- Genetics Department, CHU Nantes, Nantes, France.,INSERM UMR_S915, Institut du thorax, Nantes University, Nantes, France
| | - Jonathan Lévy
- Genetics Department, Cytogenetics Unit, Hôpital Universitaire Robert Debré, Paris, France
| | - François Lecoquierre
- Department of Genetics, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Pierre Lindenbaum
- INSERM, UMR_S1087, Institut du thorax, Nantes, France.,CNRS, UMR 6291, Nantes, France
| | | | - Pierre-Antoine Rollat-Farnier
- Genetics Department, Hospices Civils de Lyon, Lyon, France.,Bioinformatics group of the Lyon University Hospital NGS facility, Groupement Hospitalier Est, Lyon, France
| | - Thomas Simonet
- Cellular Biotechnology Center, Hospices Civils de Lyon, Lyon, France.,Nerve-Muscle Interactions Team, Institut NeuroMyoGène CNRS UMR 5310-INSERM U1217-Université Claude Bernard Lyon 1, Lyon, France
| | - Pascale Saugier-Veber
- Department of Genetics, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Anne-Claude Tabet
- Genetics Department, Cytogenetics Unit, Hôpital Universitaire Robert Debré, Paris, France.,Neuroscience Department, Human Genetics and Cognitive Function Unit, Institut Pasteur, Paris, France
| | - Annick Toutain
- Genetics Department, Hôpital Bretonneau, CHU, Tours, France.,UMR 1253, iBrain, Tours University, Inserm, Tours, France
| | - Andrew O M Wilkie
- Clinical Genetics Group, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Gaetan Lesca
- Genetics Department, Hospices Civils de Lyon, Lyon, France.,GENDEV Team, CRNL, INSERM U1028, CNRS UMR5292, UCBL1, Lyon, France
| | - Damien Sanlaville
- Genetics Department, Hospices Civils de Lyon, Lyon, France.,GENDEV Team, CRNL, INSERM U1028, CNRS UMR5292, UCBL1, Lyon, France
| | - Gaël Nicolas
- Department of Genetics and CNR-MAJ, Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Caroline Schluth-Bolard
- Genetics Department, Hospices Civils de Lyon, Lyon, France.,GENDEV Team, CRNL, INSERM U1028, CNRS UMR5292, UCBL1, Lyon, France
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27
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Cassinari K, Quenez O, Joly-Hélas G, Beaussire L, Le Meur N, Castelain M, Goldenberg A, Guerrot AM, Brehin AC, Deleuze JF, Boland A, Rovelet-Lecrux A, Campion D, Saugier-Veber P, Gruchy N, Frebourg T, Nicolas G, Sarafan-Vasseur N, Chambon P. A Simple, Universal, and Cost-Efficient Digital PCR Method for the Targeted Analysis of Copy Number Variations. Clin Chem 2019; 65:1153-1160. [PMID: 31292136 DOI: 10.1373/clinchem.2019.304246] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 06/13/2019] [Indexed: 11/06/2022]
Abstract
BACKGROUND Rare copy number variations (CNVs) are a major cause of genetic diseases. Simple targeted methods are required for their confirmation and segregation analysis. We developed a simple and universal CNV assay based on digital PCR (dPCR) and universal locked nucleic acid (LNA) hydrolysis probes. METHODS We analyzed the mapping of the 90 LNA hydrolysis probes from the Roche Universal ProbeLibrary (UPL). For each CNV, selection of the optimal primers and LNA probe was almost automated; probes were reused across assays and each dPCR assay included the CNV amplicon and a reference amplicon. We assessed the assay performance on 93 small and large CNVs and performed a comparative cost-efficiency analysis. RESULTS UPL-LNA probes presented nearly 20000000 occurrences on the human genome and were homogeneously distributed with a mean interval of 156 bp. The assay accurately detected all the 93 CNVs, except one (<200 bp), with coefficient of variation <10%. The assay was more cost-efficient than all the other methods. CONCLUSIONS The universal dPCR CNV assay is simple, robust, and cost-efficient because it combines a straightforward design allowed by universal probes and end point PCR, the advantages of a relative quantification of the target to the reference within the same reaction, and the high flexibility of the LNA hydrolysis probes. This method should be a useful tool for genomic medicine, which requires simple methods for the interpretation and segregation analysis of genomic variations.
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Affiliation(s)
- Kévin Cassinari
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Olivier Quenez
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Géraldine Joly-Hélas
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Ludivine Beaussire
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Nathalie Le Meur
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Mathieu Castelain
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Alice Goldenberg
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Anne-Marie Guerrot
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Anne-Claire Brehin
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine, Institut de Génomique, CEA, Evry, France
| | - Anne Boland
- Centre National de Recherche en Génomique Humaine, Institut de Génomique, CEA, Evry, France
| | - Anne Rovelet-Lecrux
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Dominique Campion
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France.,Department of Research, Rouvray Psychiatric Hospital, Sotteville-lés-Rouen, France
| | - Pascale Saugier-Veber
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Nicolas Gruchy
- Caen University Hospital, Department of Genetics, F 14000, Normandy Center for Genomic and Personalized Medicine, Caen, France
| | - Thierry Frebourg
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Gaël Nicolas
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, F 76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Nasrin Sarafan-Vasseur
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Pascal Chambon
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F76000, Normandy Center for Genomic and Personalized Medicine, Rouen, France;
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Isidor B, Julia S, Saugier-Veber P, Weil-Dubuc PL, Bézieau S, Bieth E, Bonnefont JP, Munnich A, Bourdeaut F, Bourgain C, Chassaing N, Corradini N, Haye D, Plaisancie J, Dupin-Deguine D, Calvas P, Mignot C, Cogné B, Manouvrier S, Pasquier L, Héron D, Boycott KM, Turrini M, Vears DF, Nizon M, Vincent M. Searching for secondary findings: considering actionability and preserving the right not to know. Eur J Hum Genet 2019; 27:1481-1484. [PMID: 31186543 DOI: 10.1038/s41431-019-0438-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 05/04/2019] [Accepted: 05/21/2019] [Indexed: 11/10/2022] Open
Affiliation(s)
- Bertrand Isidor
- Service de génétique médicale, CHU Nantes, 9 quai Moncousu, 44093, Nantes, France.
| | - Sophie Julia
- Service de génétique médicale, Hôpital Purpan, Centre Hospitalier Universitaire, 31059, Toulouse, France
| | - Pascale Saugier-Veber
- Normandie Univ, UNIROUEN, Inserm U1245, Normandy Centre for Genomic and Personalized Medicine, 76000, Rouen, France.,Department of Genetics, Rouen University Hospital, Normandy Centre for Genomic and Personalized Medicine, 76000, Rouen, France
| | - Paul-Loup Weil-Dubuc
- Espace éthique Ile-de-France, Laboratoire d'excellence Distalz, Université Paris-Sud, Paris-Saclay, France
| | - Stéphane Bézieau
- Service de génétique médicale, CHU Nantes, 9 quai Moncousu, 44093, Nantes, France
| | - Eric Bieth
- Service de génétique médicale, Hôpital Purpan, Centre Hospitalier Universitaire, 31059, Toulouse, France
| | - Jean-Paul Bonnefont
- Service de génétique médicale, Hôpital Necker-Enfants Malades, AP-HP, Paris, France
| | - Arnold Munnich
- Service de génétique médicale, Hôpital Necker-Enfants Malades, AP-HP, Paris, France
| | | | - Catherine Bourgain
- Cermes3 (Centre de recherche médecine, sciences, santé, santé mentale, société), Inserm U988, site CNRS, 7 rue Guy Môquet, 94801, Villejuif, France
| | - Nicolas Chassaing
- Service de génétique médicale, Hôpital Purpan, Centre Hospitalier Universitaire, 31059, Toulouse, France
| | - Nadège Corradini
- Institut d'hémato-oncologie pédiatrique, Centre Léon Bérard, Lyon, France
| | - Damien Haye
- APHP, Département de Génétique, Groupe Hospitalier Pitié Salpêtrière, Paris, France
| | - Julie Plaisancie
- Service de génétique médicale, Hôpital Purpan, Centre Hospitalier Universitaire, 31059, Toulouse, France
| | - Delphine Dupin-Deguine
- Service de génétique médicale, Hôpital Purpan, Centre Hospitalier Universitaire, 31059, Toulouse, France.,Service d'otoneurologie et ORL pédiatrique, Hôpital Purpan, Centre Hospitalier Universitaire, 31059, Toulouse, France
| | - Patrick Calvas
- Service de génétique médicale, Hôpital Purpan, Centre Hospitalier Universitaire, 31059, Toulouse, France
| | - Cyril Mignot
- APHP, Département de Génétique, Groupe Hospitalier Pitié Salpêtrière, Paris, France
| | - Benjamin Cogné
- Service de génétique médicale, CHU Nantes, 9 quai Moncousu, 44093, Nantes, France
| | - Sylvie Manouvrier
- Clinique de génétique, CHU de Lille, 59000, Lille, France.,EA7364 Faculté de Médecine Université de Lille, 59000, Lille, France
| | - Laurent Pasquier
- CHU Rennes, Service de Génétique Clinique, 16 Boulevard de Bulgarie, 35203, Rennes, France
| | - Delphine Héron
- APHP, Département de Génétique, Groupe Hospitalier Pitié Salpêtrière, Paris, France
| | - Kym M Boycott
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ontario, Canada
| | - Mauro Turrini
- DCS- Droit et Changement Social Université de Nantes, Nantes, France
| | - Danya F Vears
- Department of Public Health and Primary Care, Center for Biomedical Ethics and Law, KU Leuven, Belgium.,Leuven Institute for Human Genetics and Society, Leuven, Belgium.,Melbourne Law School, University of Melbourne, Carlton, Australia.,Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Australia
| | - Mathilde Nizon
- Service de génétique médicale, CHU Nantes, 9 quai Moncousu, 44093, Nantes, France
| | - Marie Vincent
- Service de génétique médicale, CHU Nantes, 9 quai Moncousu, 44093, Nantes, France.
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29
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Humbert L, Dubucquoi S, Kemp E, Saugier-Veber P, Fabien N, Isabelle RT, Cardot-Bauters C, Maciejewski Cartigny M, Delemer B, Docao C, Carel JC, Guignat L, Kerlan V, Lefevre H, Vanhove L, Sendid B, Souchon PF, Weill J, Vantyghem MC, Wemeau JL, Proust Lemoine E. SUN-040 Autoimmune Polyendocrinopathy Candidiasis Ectodermal Dystrophy (APECED) Syndrome: Prospective Screening of Asplenism and Pneumonitis in a Cohort of 25 Patients. J Endocr Soc 2019. [PMCID: PMC6553308 DOI: 10.1210/js.2019-sun-040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Background: APECED syndrome is a rare monogenic disease caused by homozygous mutation of AIRE gene. It classically presents with chronic mucocutaneous candidiasis, hypoparathyroidism, and adrenal insufficiency with an early onset in childhood. Non-endocrine manifestations as ectodermic dystrophy, asplenism and pneumonitis are also observed but their incidence remains unknown and their mechanisms not well understood. APECED has been poorly reported in France although it is widely described in several European countries. The aim of this study was to report on rare manifestations of APECED syndrome in a French cohort. Patients and methods: We performed a multicentric prospective observational study in France in order to collect clinical, biological, immunological and genetic data, after written informed consent in the frame of a PHRC (Hospital Project of Clinical Research #1927). Bronchiolitis, splenic atrophy and ocular manifestations were systematically investigated. Results We enrolled 25 patients between 2009 and 2016. Clinically, the median age at diagnosis was 12 while the median age of the first manifestation was 6, so there was diagnostic delay. The median number of manifestations was seven. 76 % of patients presented with the classical triad. Reduction of lung function was observed in 62% of patients, asplenism in 26%, and ocular manifestation in 33%. Genetically, eleven mutations of the AIRE gene were identified, two of which never previously reported: an intronic variation c.653-70G>A (intron 5) in a patient with hypoparathyroidism as unique manifestation , and c.1066del (p.Arg356GlyfsX22) (exon 9) in a patient from Guadeloupe with composite heterozygous mutations (c.967_979del13; exon 8). The most common AIRE mutation was the mutation R257X. Median age was 26 and sex ratio was 1.1. Biologically, 100% of tested sera were positive for anti-IFNα-antibodies, 15/18 for anti-IL-22, and 13/18 for anti-IL-17F antibodies. Conclusion: This series shows a high genotypic and phenotypic variability of APECED in France, that could be explained by different ethnic origins. The systematic screening for non-classic manifestations shows a more frequent occurrence than in other series. Systematic screening of asplenism and bronchiolitis could be a useful strategy to make an earlier diagnosis, to prevent infections by vaccination and to treat earlier pulmonary involvement. Lastly, antibodies against Th17 cytokines appear as good soluble markers for diagnosis of non-classical presentation of the syndrome.
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Affiliation(s)
| | | | - Elizabeth Kemp
- Human Metabolism, University of Sheffield, Sheffield, , United Kingdom
| | | | - Nicole Fabien
- UF D'AUTO-IMMUNITE, Centre Hospitalier Lyon-Sud, Pierre Benite, , France
| | | | | | | | | | | | | | | | - Veronique Kerlan
- Service d'Endocrinologie, Hopital de la Cavale Blanche, Brest, , France
| | | | | | | | | | - Jacques Weill
- Ped and Endo Unit, Hopital Jeanne de Flandre, Lille, , France
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30
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Lehalle D, Altunoglu U, Bruel AL, Assoum M, Duffourd Y, Masurel A, Baujat G, Bessieres B, Captier G, Edery P, Elçioğlu NH, Geneviève D, Goldenberg A, Héron D, Grotto S, Marlin S, Putoux A, Rossi M, Saugier-Veber P, Triau S, Cabrol C, Vézain M, Vincent-Delorme C, Thauvin-Robinet C, Thevenon J, Vabres P, Callier P, Kayserili H, Faivre L. The oculoauriculofrontonasal syndrome: Further clinical characterization and additional evidence suggesting a nontraditional mode of inheritance. Am J Med Genet A 2018; 176:2740-2750. [PMID: 30548201 DOI: 10.1002/ajmg.a.40662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 08/01/2018] [Accepted: 08/23/2018] [Indexed: 12/22/2022]
Abstract
The oculoauriculofrontonasal syndrome (OAFNS) is a rare disorder characterized by the association of frontonasal dysplasia (widely spaced eyes, facial cleft, and nose abnormalities) and oculo-auriculo-vertebral spectrum (OAVS)-associated features, such as preauricular ear tags, ear dysplasia, mandibular asymmetry, epibulbar dermoids, eyelid coloboma, and costovertebral anomalies. The etiology is unknown so far. This work aimed to identify molecular bases for the OAFNS. Among a cohort of 130 patients with frontonasal dysplasia, accurate phenotyping identified 18 individuals with OAFNS. We describe their clinical spectrum, including the report of new features (micro/anophtalmia, cataract, thyroid agenesis, polymicrogyria, olfactory bulb hypoplasia, and mandibular cleft), and emphasize the high frequency of nasal polyps in OAFNS (56%). We report the negative results of ALX1, ALX3, and ALX4 genes sequencing and next-generation sequencing strategy performed on blood-derived DNA from respectively, four and four individuals. Exome sequencing was performed in four individuals, genome sequencing in one patient with negative exome sequencing result. Based on the data from this series and the literature, diverse hypotheses can be raised regarding the etiology of OAFNS: mosaic mutation, epigenetic anomaly, oligogenism, or nongenetic cause. In conclusion, this series represents further clinical delineation work of the rare OAFNS, and paves the way toward the identification of the causing mechanism.
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Affiliation(s)
- Daphné Lehalle
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, Centre Hospitalier Universitaire Dijon, Dijon, France.,Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France.,Unité fonctionnelle de Génétique Clinique, Centre Hospitalier Intercommunal de Créteil, Dijon, France
| | - Umut Altunoglu
- Medical Genetics Department, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Ange-Line Bruel
- Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Mirna Assoum
- Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Yannis Duffourd
- Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Alice Masurel
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, Centre Hospitalier Universitaire Dijon, Dijon, France
| | - Geneviève Baujat
- Service de Génétique, INSERM U781, Hôpital Necker-Enfants Malades, Institut Imagine, University Sorbonne-Paris-Cité, Paris, France
| | - Bettina Bessieres
- Unite d'embryofoetopathologie, Service d'Histologie-Embryologie-Cytogénétique, Hôpital Necker - Enfants Malades, APHP, Paris, France
| | - Guillaume Captier
- Service de chirurgie orthopédique et plastique pédiatrique, Hôpital Lapeyronie, CHU Montpellier, Montpellier, France
| | - Patrick Edery
- Service de génétique et Centre de Référence des Anomalies du développement de la région Auvergne-Rhône-Alpes, CHU de Lyon, Lyon, France.,Centre de Recherche en Neurosciences de Lyon, INSERM U1028 CNRS UMR 5292, UCB Lyon 1, Lyon, France
| | - Nursel H Elçioğlu
- Department of Pediatric Genetics, Marmara University Medical School, Istanbul, Turkey.,Eastern Mediterranean University Medical School, Mersin, Turkey
| | - David Geneviève
- Genetic Department for Rare Disease and Personalised Medicine, Clinical Division, Montpellier University, Inserm U1183, Montpellier, France.,Centre de référence des anomalies du développement et syndromes malformatifs, Sud-Ouest Occitanie, France
| | - Alice Goldenberg
- Department of Genetics, Rouen University Hospital, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Delphine Héron
- AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Génétique, Paris, France.,Centre de Référence "déficiences intellectuelles de causes rares", Paris, France.,Groupe de Recherche Clinique (GRC) "déficience intellectuelle et autisme" UPMC, Paris, France.,INSERM, U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Paris, France.,Institut du Cerveau et de la Moelle épinière, ICM, Paris, France
| | - Sarah Grotto
- Department of Genetics, Rouen University Hospital, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Sandrine Marlin
- Service de Génétique, INSERM U781, Hôpital Necker-Enfants Malades, Institut Imagine, University Sorbonne-Paris-Cité, Paris, France
| | - Audrey Putoux
- Service de génétique et Centre de Référence des Anomalies du développement de la région Auvergne-Rhône-Alpes, CHU de Lyon, Lyon, France.,Centre de Recherche en Neurosciences de Lyon, INSERM U1028 CNRS UMR 5292, UCB Lyon 1, Lyon, France
| | - Massimiliano Rossi
- Service de génétique et Centre de Référence des Anomalies du développement de la région Auvergne-Rhône-Alpes, CHU de Lyon, Lyon, France.,Centre de Recherche en Neurosciences de Lyon, INSERM U1028 CNRS UMR 5292, UCB Lyon 1, Lyon, France
| | - Pascale Saugier-Veber
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | | | | | - Myriam Vézain
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | | | - Christel Thauvin-Robinet
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, Centre Hospitalier Universitaire Dijon, Dijon, France.,Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Julien Thevenon
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, Centre Hospitalier Universitaire Dijon, Dijon, France.,Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Pierre Vabres
- Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France.,Service de Dermatologie, CHU Dijon, Dijon, France
| | - Patrick Callier
- Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
| | - Hulya Kayserili
- Medical Genetics Department, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey.,Koç University School of Medicine (KUSoM) Medical Genetics Department, İstanbul, Turkey
| | - Laurence Faivre
- Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'Interrégion Est, Centre Hospitalier Universitaire Dijon, Dijon, France.,Equipe GAD, INSERM LNC UMR 1231, Faculté de Médecine, Université de Bourgogne Franche-Comté, Dijon, France
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31
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Vezain M, Lecuyer M, Rubio M, Dupé V, Ratié L, David V, Pasquier L, Odent S, Coutant S, Tournier I, Trestard L, Adle-Biassette H, Vivien D, Frébourg T, Gonzalez BJ, Laquerrière A, Saugier-Veber P. A de novo variant in ADGRL2 suggests a novel mechanism underlying the previously undescribed association of extreme microcephaly with severely reduced sulcation and rhombencephalosynapsis. Acta Neuropathol Commun 2018; 6:109. [PMID: 30340542 PMCID: PMC6195752 DOI: 10.1186/s40478-018-0610-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 12/13/2022] Open
Abstract
Extreme microcephaly and rhombencephalosynapsis represent unusual pathological conditions, each of which occurs in isolation or in association with various other cerebral and or extracerebral anomalies. Unlike microcephaly for which several disease-causing genes have been identified with different modes of inheritance, the molecular bases of rhombencephalosynapsis remain unknown and rhombencephalosynapsis presents mainly as a sporadic condition consistent with de novo dominant variations. We report for the first time the association of extreme microcephaly with almost no sulcation and rhombencephalosynapsis in a fœtus for which comparative patient-parent exome sequencing strategy revealed a heterozygous de novo missense variant in the ADGRL2 gene. ADGRL2 encodes latrophilin 2, an adhesion G-protein-coupled receptor whose exogenous ligand is α-latrotoxin. Adgrl2 immunohistochemistry and in situ hybridization revealed expression in the telencephalon, mesencephalon and rhombencephalon of mouse and chicken embryos. In human brain embryos and fœtuses, Adgrl2 immunoreactivity was observed in the hemispheric and cerebellar germinal zones, the cortical plate, basal ganglia, pons and cerebellar cortex. Microfluorimetry experiments evaluating intracellular calcium release in response to α-latrotoxin binding showed significantly reduced cytosolic calcium release in the fœtus amniocytes vs amniocytes from age-matched control fœtuses and in HeLa cells transfected with mutant ADGRL2 cDNA vs wild-type construct. Embryonic lethality was also observed in constitutive Adgrl2−/− mice. In Adgrl2+/− mice, MRI studies revealed microcephaly and vermis hypoplasia. Cell adhesion and wound healing assays demonstrated that the variation increased cell adhesion properties and reduced cell motility. Furthermore, HeLa cells overexpressing mutant ADGRL2 displayed a highly developed cytoplasmic F-actin network related to cytoskeletal dynamic modulation. ADGRL2 is the first gene identified as being responsible for extreme microcephaly with rhombencephalosynapsis. Increased cell adhesion, reduced cell motility and cytoskeletal dynamic alterations induced by the variant therefore represent a new mechanism responsible for microcephaly.
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32
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Baer S, Afenjar A, Smol T, Piton A, Gérard B, Alembik Y, Bienvenu T, Boursier G, Boute O, Colson C, Cordier MP, Cormier-Daire V, Delobel B, Doco-Fenzy M, Duban-Bedu B, Fradin M, Geneviève D, Goldenberg A, Grelet M, Haye D, Heron D, Isidor B, Keren B, Lacombe D, Lèbre AS, Lesca G, Masurel A, Mathieu-Dramard M, Nava C, Pasquier L, Petit A, Philip N, Piard J, Rondeau S, Saugier-Veber P, Sukno S, Thevenon J, Van-Gils J, Vincent-Delorme C, Willems M, Schaefer E, Morin G. Wiedemann-Steiner syndrome as a major cause of syndromic intellectual disability: A study of 33 French cases. Clin Genet 2018; 94:141-152. [PMID: 29574747 DOI: 10.1111/cge.13254] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 03/18/2018] [Accepted: 03/20/2018] [Indexed: 12/18/2022]
Abstract
Wiedemann-Steiner syndrome (WSS) is a rare syndromic condition in which intellectual disability (ID) is associated with hypertrichosis cubiti, short stature, and characteristic facies. Following the identification of the causative gene (KMT2A) in 2012, only 31 cases of WSS have been described precisely in the literature. We report on 33 French individuals with a KMT2A mutation confirmed by targeted gene sequencing, high-throughput sequencing or exome sequencing. Patients' molecular and clinical features were recorded and compared with the literature data. On the molecular level, we found 29 novel mutations. We observed autosomal dominant transmission of WSS in 3 families and mosaicism in one family. Clinically, we observed a broad phenotypic spectrum with regard to ID (mild to severe), the facies (typical or not of WSS) and associated malformations (bone, cerebral, renal, cardiac and ophthalmological anomalies). Hypertrichosis cubiti that was supposed to be pathognomonic in the literature was found only in 61% of our cases. This is the largest series of WSS cases yet described to date. A majority of patients exhibited suggestive features, but others were less characteristic, only identified by molecular diagnosis. The prevalence of WSS was higher than expected in patients with ID, suggesting than KMT2A is a major gene in ID.
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Affiliation(s)
- S Baer
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Institut Génétique Médicale d'Alsace, Strasbourg, France.,Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - A Afenjar
- Unité de Génétique, Hôpital Armand Trousseau-La Roche-Guyon, AP-HP, Paris, France
| | - T Smol
- Institut de Génétique Médicale, Hôpital Jeanne de Flandre, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - A Piton
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - B Gérard
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Y Alembik
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Institut Génétique Médicale d'Alsace, Strasbourg, France
| | - T Bienvenu
- Institut Cochin, INSERM U1016, CNRS UMR8104, Université Paris Descartes, Paris, France
| | - G Boursier
- Département Génétique Médicale, Laboratoire génétique moléculaire maladies auto inflammatoires et maladies rares, CHRU de Montpellier, Montpellier, France
| | - O Boute
- Service de Génétique Clinique, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - C Colson
- Service de Génétique Clinique, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - M-P Cordier
- Service de Génétique Médicale, Hospices Civils de Lyon, Lyon, France
| | - V Cormier-Daire
- Département de Génétique, INSERM UMR1163, Institut Imagine, Hôpital Necker-Enfants-Malades, Université Paris Descartes, Sorbonne Paris Cité, AP-HP, Paris, France
| | - B Delobel
- Centre de Génétique Chromosomique, Groupe Hospitalier de l'Institut Catholique de Lille, Lille, France
| | - M Doco-Fenzy
- Service de Génétique, CHU de Reims, Reims, France
| | - B Duban-Bedu
- Centre de Génétique Chromosomique, Groupe Hospitalier de l'Institut Catholique de Lille, Lille, France
| | - M Fradin
- Service de Génétique Clinique, CHU Rennes, Rennes, France
| | - D Geneviève
- Département de Génétique Médicale, CHRU Montpellier, Faculté de Médecine de Montpellier-Nîmes, INSERM U1183, Montpellier, France
| | - A Goldenberg
- Service de Génétique Médicale, CHU de Rouen, Rouen, France
| | - M Grelet
- Département de Génétique Médicale, Assistance Publique Hôpitaux de Marseille, Marseille, France
| | - D Haye
- Service de Génétique Clinique, Unité Fonctionnelle de Génétique Médicale, CHU Paris-GH La Pitié Salpêtrière-Charles Foix, Paris, France
| | - D Heron
- Service de Génétique Clinique, Unité Fonctionnelle de Génétique Médicale, CHU Paris-GH La Pitié Salpêtrière-Charles Foix, Paris, France
| | - B Isidor
- Service de Génétique Médicale, CHU de Nantes, Nantes, France
| | - B Keren
- Unité Fonctionnelle de Génomique du Développement, Centre de Génétique Moléculaire et Chromosomique, CHU Paris-GH La Pitié Salpêtrière-Charles Foix, Paris, France
| | - D Lacombe
- Département de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - A-S Lèbre
- Laboratoire de Génétique, Service de Génétique et Biologie de la Reproduction, CHU de Reims, Reims, France
| | - G Lesca
- Service de Génétique Médicale, Hospices Civils de Lyon, Lyon, France
| | - A Masurel
- Centre de Génétique, CHU Dijon, Hôpital d'Enfants, Dijon, France
| | | | - C Nava
- Unité Fonctionnelle de Génomique du Développement, Centre de Génétique Moléculaire et Chromosomique, CHU Paris-GH La Pitié Salpêtrière-Charles Foix, Paris, France
| | - L Pasquier
- Service de Génétique Clinique, CHU Rennes, Rennes, France
| | - A Petit
- Service de Génétique Clinique, CHU Amiens Picardie, Amiens, France
| | - N Philip
- Département de Génétique Médicale, Assistance Publique Hôpitaux de Marseille, Marseille, France
| | - J Piard
- Centre de Génétique Humaine, Université de Franche-Comté, CHU Besançon, Besançon, France
| | - S Rondeau
- Département de Génétique, INSERM UMR1163, Institut Imagine, Hôpital Necker-Enfants-Malades, Université Paris Descartes, Sorbonne Paris Cité, AP-HP, Paris, France
| | - P Saugier-Veber
- Département de Génétique, CHU Rouen, Inserm U1079, Institut pour la recherche et l'innovation en Biomédecine, Université de Rouen, Rouen, France
| | - S Sukno
- Service de Neuropédiatrie, Hôpital Saint Vincent de Paul, Groupe Hospitalier de l'Institut Catholique Lillois, Faculté Libre de Médecine, Lille, France
| | - J Thevenon
- Equipe d'Accueil 4271, Génétique des Anomalies du Développement, Université de Bourgogne, Dijon, France
| | - J Van-Gils
- Département de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - C Vincent-Delorme
- Service de Génétique Clinique, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - M Willems
- Département de Génétique Médicale, CHRU Montpellier, Faculté de Médecine de Montpellier-Nîmes, INSERM U1183, Montpellier, France
| | - E Schaefer
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Institut Génétique Médicale d'Alsace, Strasbourg, France
| | - G Morin
- Service de Génétique Clinique, CHU Amiens Picardie, Amiens, France
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Smol T, Petit F, Piton A, Keren B, Sanlaville D, Afenjar A, Baker S, Bedoukian EC, Bhoj EJ, Bonneau D, Boudry-Labis E, Bouquillon S, Boute-Benejean O, Caumes R, Chatron N, Colson C, Coubes C, Coutton C, Devillard F, Dieux-Coeslier A, Doco-Fenzy M, Ewans LJ, Faivre L, Fassi E, Field M, Fournier C, Francannet C, Genevieve D, Giurgea I, Goldenberg A, Green AK, Guerrot AM, Heron D, Isidor B, Keena BA, Krock BL, Kuentz P, Lapi E, Le Meur N, Lesca G, Li D, Marey I, Mignot C, Nava C, Nesbitt A, Nicolas G, Roche-Lestienne C, Roscioli T, Satre V, Santani A, Stefanova M, Steinwall Larsen S, Saugier-Veber P, Picker-Minh S, Thuillier C, Verloes A, Vieville G, Wenzel M, Willems M, Whalen S, Zarate YA, Ziegler A, Manouvrier-Hanu S, Kalscheuer VM, Gerard B, Ghoumid J. MED13L-related intellectual disability: involvement of missense variants and delineation of the phenotype. Neurogenetics 2018; 19:93-103. [PMID: 29511999 DOI: 10.1007/s10048-018-0541-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/17/2018] [Indexed: 12/30/2022]
Abstract
Molecular anomalies in MED13L, leading to haploinsufficiency, have been reported in patients with moderate to severe intellectual disability (ID) and distinct facial features, with or without congenital heart defects. Phenotype of the patients was referred to "MED13L haploinsufficiency syndrome." Missense variants in MED13L were already previously described to cause the MED13L-related syndrome, but only in a limited number of patients. Here we report 36 patients with MED13L molecular anomaly, recruited through an international collaboration between centers of expertise for developmental anomalies. All patients presented with intellectual disability and severe language impairment. Hypotonia, ataxia, and recognizable facial gestalt were frequent findings, but not congenital heart defects. We identified seven de novo missense variations, in addition to protein-truncating variants and intragenic deletions. Missense variants clustered in two mutation hot-spots, i.e., exons 15-17 and 25-31. We found that patients carrying missense mutations had more frequently epilepsy and showed a more severe phenotype. This study ascertains missense variations in MED13L as a cause for MED13L-related intellectual disability and improves the clinical delineation of the condition.
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Affiliation(s)
- T Smol
- Institut de Génétique Médicale, Hôpital Jeanne de Flandre, CHU Lille, Lille, France.,University of Lille, EA 7364-RADEME, Lille, France
| | - F Petit
- University of Lille, EA 7364-RADEME, Lille, France.,Service de Génétique Clinique, Hôpital Jeanne de Flandre, CHU Lille, avenue Eugène Avinée, Lille, France
| | - A Piton
- Laboratoire de diagnostic génétique, Institut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - B Keren
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France
| | - D Sanlaville
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
| | - A Afenjar
- Service de Génétique, Hôpital d'Enfants Armand-Trousseau, AP-HP, Paris, France
| | - S Baker
- Department of Pathology Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - E C Bedoukian
- Roberts Individualized Medical Genetics Center, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - E J Bhoj
- Department of Pathology Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - D Bonneau
- Service de Génétique, CHU d'Angers, Angers, France
| | - E Boudry-Labis
- Institut de Génétique Médicale, Hôpital Jeanne de Flandre, CHU Lille, Lille, France
| | - S Bouquillon
- Institut de Génétique Médicale, Hôpital Jeanne de Flandre, CHU Lille, Lille, France
| | - O Boute-Benejean
- University of Lille, EA 7364-RADEME, Lille, France.,Service de Génétique Clinique, Hôpital Jeanne de Flandre, CHU Lille, avenue Eugène Avinée, Lille, France
| | - R Caumes
- Service de Génétique Clinique, Hôpital Jeanne de Flandre, CHU Lille, avenue Eugène Avinée, Lille, France
| | - N Chatron
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
| | - C Colson
- University of Lille, EA 7364-RADEME, Lille, France.,Service de Génétique Clinique, Hôpital Jeanne de Flandre, CHU Lille, avenue Eugène Avinée, Lille, France
| | - C Coubes
- Département de Génétique Médicale, CHU Montpellier, Montpellier, France
| | - C Coutton
- Laboratoire de Génétique Chromosomique, CHU Grenoble Alpes, Grenoble, France
| | - F Devillard
- Laboratoire de Génétique Chromosomique, CHU Grenoble Alpes, Grenoble, France
| | - A Dieux-Coeslier
- University of Lille, EA 7364-RADEME, Lille, France.,Service de Génétique Clinique, Hôpital Jeanne de Flandre, CHU Lille, avenue Eugène Avinée, Lille, France
| | - M Doco-Fenzy
- Service de Génétique, EA3801, SFR-CAP Santé, CHU de Reims, Reims, France
| | - L J Ewans
- St Vincent's Clinical School, University of New South Wales, Darlinghurst, New South Wales, Australia
| | - L Faivre
- Centre de Génétique et Centre de Référence Maladies Rares 'Anomalies du Développement, CHU Dijon, Dijon, France.,Equipe GAD, UMR INSERM 1231, Université de Bourgogne, Dijon, France
| | - E Fassi
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - M Field
- The Genetics of Learning Disability Service, Waratah, New South Wales, Australia
| | - C Fournier
- Laboratoire de diagnostic génétique, Institut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - C Francannet
- Service de Génétique Médicale, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - D Genevieve
- Département de Génétique Médicale, CHU Montpellier, Montpellier, France
| | - I Giurgea
- Service de Génétique, Hôpital Trousseau, AP-HP, Paris, France
| | - A Goldenberg
- Service de Génétique et Inserm U1079, Centre Normand de Génomique Médicale et Médecine Personnalisée, CHU de Rouen, Inserm et Université de Rouen, Rouen, France
| | - A K Green
- Department of Clinical Genetics, University Hospital Linköping, Linköping, Sweden
| | - A M Guerrot
- Service de Génétique et Inserm U1079, Centre Normand de Génomique Médicale et Médecine Personnalisée, CHU de Rouen, Inserm et Université de Rouen, Rouen, France
| | - D Heron
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France
| | - B Isidor
- Service de Génétique Médicale, Unité de Génétique Clinique, CHU de Nantes, Nantes, France
| | - B A Keena
- Clinical Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - B L Krock
- Department of Pathology Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - P Kuentz
- Equipe GAD, UMR INSERM 1231, Université de Bourgogne, Dijon, France
| | - E Lapi
- Medical Genetics Unit, Anna Meyer Children's University Hospital, Florence, Italy
| | - N Le Meur
- Service de Génétique et Inserm U1079, Centre Normand de Génomique Médicale et Médecine Personnalisée, CHU de Rouen, Inserm et Université de Rouen, Rouen, France
| | - G Lesca
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
| | - D Li
- Department of Pathology Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - I Marey
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France
| | - C Mignot
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France
| | - C Nava
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France
| | - A Nesbitt
- Department of Pathology Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - G Nicolas
- Service de Génétique et Inserm U1079, Centre Normand de Génomique Médicale et Médecine Personnalisée, CHU de Rouen, Inserm et Université de Rouen, Rouen, France
| | - C Roche-Lestienne
- Institut de Génétique Médicale, Hôpital Jeanne de Flandre, CHU Lille, Lille, France
| | - T Roscioli
- St Vincent's Clinical School, University of New South Wales, Darlinghurst, New South Wales, Australia
| | - V Satre
- Laboratoire de Génétique Chromosomique, CHU Grenoble Alpes, Grenoble, France
| | - A Santani
- Department of Pathology Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - M Stefanova
- Department of Clinical Genetics, University Hospital Linköping, Linköping, Sweden
| | - S Steinwall Larsen
- Department of Clinical Genetics, University Hospital Linköping, Linköping, Sweden
| | - P Saugier-Veber
- Service de Génétique et Inserm U1079, Centre Normand de Génomique Médicale et Médecine Personnalisée, CHU de Rouen, Inserm et Université de Rouen, Rouen, France
| | - S Picker-Minh
- Department of Pediatric Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - C Thuillier
- Institut de Génétique Médicale, Hôpital Jeanne de Flandre, CHU Lille, Lille, France
| | - A Verloes
- Unité Fonctionnelle de Génétique Clinique, Hôpital Robert Debré, AP-HP, Paris, France
| | - G Vieville
- Laboratoire de Génétique Chromosomique, CHU Grenoble Alpes, Grenoble, France
| | - M Wenzel
- Clinical Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - M Willems
- Département de Génétique Médicale, CHU Montpellier, Montpellier, France
| | - S Whalen
- Département de Génétique, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, Paris, France
| | - Y A Zarate
- Section of Genetics and Metabolism, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - A Ziegler
- Service de Génétique, CHU d'Angers, Angers, France
| | - S Manouvrier-Hanu
- University of Lille, EA 7364-RADEME, Lille, France.,Service de Génétique Clinique, Hôpital Jeanne de Flandre, CHU Lille, avenue Eugène Avinée, Lille, France
| | - V M Kalscheuer
- Research Group Development and Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - B Gerard
- Laboratoire de diagnostic génétique, Institut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jamal Ghoumid
- University of Lille, EA 7364-RADEME, Lille, France. .,Service de Génétique Clinique, Hôpital Jeanne de Flandre, CHU Lille, avenue Eugène Avinée, Lille, France.
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35
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Gaildrat P, Lebbah S, Tebani A, Sudrié-Arnaud B, Tostivint I, Bollee G, Tubeuf H, Charles T, Bertholet-Thomas A, Goldenberg A, Barbey F, Martins A, Saugier-Veber P, Frébourg T, Knebelmann B, Bekri S. Clinical and molecular characterization of cystinuria in a French cohort: relevance of assessing large-scale rearrangements and splicing variants. Mol Genet Genomic Med 2017; 5:373-389. [PMID: 28717662 PMCID: PMC5511796 DOI: 10.1002/mgg3.294] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 03/27/2017] [Accepted: 04/06/2017] [Indexed: 02/04/2023] Open
Abstract
Background Cystinuria is an autosomal recessive disorder of dibasic amino acid transport in the kidney and the intestine leading to increased urinary cystine excretion and nephrolithiasis. Two genes, SLC3A1 and SLC7A9, coding respectively for rBAT and b0,+AT, account for the genetic basis of cystinuria. Methods This study reports the clinical and molecular characterization of a French cohort including 112 cystinuria patients and 25 relatives from 99 families. Molecular screening was performed using sequencing and Quantitative Multiplex PCR of Short Fluorescent Fragments analyses. Functional minigene‐based assays have been used to characterize splicing variants. Results Eighty‐eight pathogenic nucleotide changes were identified in SLC3A1 (63) and SLC7A9 (25) genes, of which 42 were novel. Interestingly, 17% (15/88) and 11% (10/88) of the total number of variants correspond, respectively, to large‐scale rearrangements and splicing mutations. Functional minigene‐based assays were performed for six variants located outside the most conserved sequences of the splice sites; three variants affect splice sites, while three others modify exonic splicing regulatory elements (ESR), in good agreement with a new in silico prediction based on ΔtESRseq values. Conclusion This report expands the spectrum of SLC3A1 and SLC7A9 variants and supports that digenic inheritance is unlikely. Furthermore, it highlights the relevance of assessing large‐scale rearrangements and splicing mutations to fully characterize cystinuria patients at the molecular level.
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Affiliation(s)
- Pascaline Gaildrat
- Inserm U1245UNIROUENNormandie UnivNormandy Centre for Genomic and Personalized MedicineRouenFrance
| | - Said Lebbah
- Department of NephrologyNecker HospitalParisFrance
| | - Abdellah Tebani
- Inserm U1245UNIROUENNormandie UnivNormandy Centre for Genomic and Personalized MedicineRouenFrance.,Department of Metabolic BiochemistryRouen University HospitalRouenFrance
| | | | | | | | - Hélène Tubeuf
- Inserm U1245UNIROUENNormandie UnivNormandy Centre for Genomic and Personalized MedicineRouenFrance.,Interactive BiosoftwareRouenFrance
| | | | | | | | - Frederic Barbey
- Department of TransplantationCHUV Department of PediatricsLausanne University HospitalLausanneSwitzerland
| | - Alexandra Martins
- Inserm U1245UNIROUENNormandie UnivNormandy Centre for Genomic and Personalized MedicineRouenFrance
| | - Pascale Saugier-Veber
- Inserm U1245UNIROUENNormandie UnivNormandy Centre for Genomic and Personalized MedicineRouenFrance.,Department of GeneticsRouen University HospitalRouenFrance
| | - Thierry Frébourg
- Inserm U1245UNIROUENNormandie UnivNormandy Centre for Genomic and Personalized MedicineRouenFrance.,Department of GeneticsRouen University HospitalRouenFrance
| | | | - Soumeya Bekri
- Inserm U1245UNIROUENNormandie UnivNormandy Centre for Genomic and Personalized MedicineRouenFrance.,Department of Metabolic BiochemistryRouen University HospitalRouenFrance
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36
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Saugier-Veber P, Marguet F, Lecoquierre F, Adle-Biassette H, Guimiot F, Cipriani S, Patrier S, Brasseur-Daudruy M, Goldenberg A, Layet V, Capri Y, Gérard M, Frébourg T, Laquerrière A. Hydrocephalus due to multiple ependymal malformations is caused by mutations in the MPDZ gene. Acta Neuropathol Commun 2017; 5:36. [PMID: 28460636 PMCID: PMC5412059 DOI: 10.1186/s40478-017-0438-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 04/14/2017] [Indexed: 11/20/2022] Open
Abstract
Congenital hydrocephalus is considered as either acquired due to haemorrhage, infection or neoplasia or as of developmental nature and is divided into two subgroups, communicating and obstructive. Congenital hydrocephalus is either syndromic or non-syndromic, and in the latter no cause is found in more than half of the patients. In patients with isolated hydrocephalus, L1CAM mutations represent the most common aetiology. More recently, a founder mutation has also been reported in the MPDZ gene in foetuses presenting massive hydrocephalus, but the neuropathology remains unknown. We describe here three novel homozygous null mutations in the MPDZ gene in foetuses whose post-mortem examination has revealed a homogeneous phenotype characterized by multiple ependymal malformations along the aqueduct of Sylvius, the third and fourth ventricles as well as the central canal of the medulla, consisting in multifocal rosettes with immature cell accumulation in the vicinity of ependymal lining early detached from the ventricular zone. MPDZ also named MUPP1 is an essential component of tight junctions which are expressed from early brain development in the choroid plexuses and ependyma. Alterations in the formation of tight junctions within the ependyma very likely account for the lesions observed and highlight for the first time that primary multifocal ependymal malformations of the ventricular system is genetically determined in humans. Therefore, MPDZ sequencing should be performed when neuropathological examination reveals multifocal ependymal rosette formation within the aqueduct of Sylvius, of the third and fourth ventricles and of the central canal of the medulla.
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37
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El Chehadeh S, Touraine R, Prieur F, Reardon W, Bienvenu T, Chantot-Bastaraud S, Doco-Fenzy M, Landais E, Philippe C, Marle N, Callier P, Mosca-Boidron AL, Mugneret F, Le Meur N, Goldenberg A, Guerrot AM, Chambon P, Satre V, Coutton C, Jouk PS, Devillard F, Dieterich K, Afenjar A, Burglen L, Moutard ML, Addor MC, Lebon S, Martinet D, Alessandri JL, Doray B, Miguet M, Devys D, Saugier-Veber P, Drunat S, Aral B, Kremer V, Rondeau S, Tabet AC, Thevenon J, Thauvin-Robinet C, Perreton N, Des Portes V, Faivre L. Xq28 duplication includingMECP2in six unreported affected females: what can we learn for diagnosis and genetic counselling? Clin Genet 2017; 91:576-588. [DOI: 10.1111/cge.12898] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/14/2016] [Accepted: 10/17/2016] [Indexed: 11/27/2022]
Affiliation(s)
- S. El Chehadeh
- FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du Développement et Syndromes Malformatifs» de l'Est; Centre de Génétique, CHU de Dijon; Dijon France
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares «Anomalies du Développement et Syndromes Malformatifs» de l'Est; Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre; Strasbourg France
| | - R. Touraine
- Service de Génétique Clinique Chromosomique et Moléculaire; CHU de Saint-Etienne; Saint-Étienne France
| | - F. Prieur
- Service de Génétique Clinique Chromosomique et Moléculaire; CHU de Saint-Etienne; Saint-Étienne France
| | - W. Reardon
- Clinical Genetics, Division National Centre for Medical Genetics; Our Lady's Children's Hospital; Dublin Ireland
| | - T. Bienvenu
- AP-HP, Laboratoire de Génétique et Biologie Moléculaires, HU Paris Centre, Site Cochin, France; Université Paris Descartes; Institut Cochin, INSERM U1016; Paris France
| | - S. Chantot-Bastaraud
- Service de Génétique et Embryologie Médicales; CHU Paris Est - Hôpital d'Enfants Armand-Trousseau; Paris France
| | - M. Doco-Fenzy
- Service de Génétique, EA3801; SFR-CAP Santé, CHU de Reims; Reims France
| | - E. Landais
- PRBI, Pôle de Biologie Médicale; CHU de Reims; Reims France
| | - C. Philippe
- Laboratoire de Génétique Médicale; Hôpitaux de Brabois CHRU; Vandoeuvre les Nancy France
| | - N. Marle
- Service de Cytogénétique; CHU de Dijon; Dijon France
| | - P. Callier
- Service de Cytogénétique; CHU de Dijon; Dijon France
| | | | - F. Mugneret
- Service de Cytogénétique; CHU de Dijon; Dijon France
| | - N. Le Meur
- Etablissement Français du Sang; CHU de Rouen; Rouen France
| | - A. Goldenberg
- Service de Génétique et Inserm U1079, Centre Normand de Génomique Médicale et Médecine Personnalisée, CHU de Rouen; Inserm et Université de Rouen; Rouen France
| | - A.-M. Guerrot
- Service de Génétique et Inserm U1079, Centre Normand de Génomique Médicale et Médecine Personnalisée, CHU de Rouen; Inserm et Université de Rouen; Rouen France
| | - P. Chambon
- Laboratoire D'histologie, Cytogénétique et Biologie de la Reproduction; CHU de Rouen; Rouen France
| | - V. Satre
- Département de Génétique et Procréation, CHU Grenoble Alpes; Université Grenoble Alpes; Grenoble France
| | - C. Coutton
- Département de Génétique et Procréation, CHU Grenoble Alpes; Université Grenoble Alpes; Grenoble France
| | - P.-S. Jouk
- Département de Génétique et Procréation, CHU Grenoble Alpes; Université Grenoble Alpes; Grenoble France
| | - F. Devillard
- Département de Génétique et Procréation, CHU Grenoble Alpes; Université Grenoble Alpes; Grenoble France
| | - K. Dieterich
- Département de Génétique et Procréation, CHU Grenoble Alpes; Université Grenoble Alpes; Grenoble France
| | - A. Afenjar
- Service de Génétique; CHU Paris Est - Hôpital d'Enfants Armand-Trousseau; Paris France
| | - L. Burglen
- Service de Génétique; CHU Paris Est - Hôpital d'Enfants Armand-Trousseau; Paris France
| | - M.-L. Moutard
- Unité de neuropédiatrie et pathologie du développement; CHU Paris Est - Hôpital d'Enfants Armand-Trousseau; Paris France
| | - M.-C. Addor
- Service de Génétique Médicale; Centre Hospitalier Universitaire Vaudois CHUV; Lausanne Switzerland
| | - S. Lebon
- Unité de Neuropédiatrie; Centre Hospitalier Universitaire Vaudois CHUV; Lausanne Switzerland
| | - D. Martinet
- Laboratoire de Cytogénétique Constitutionnelle et Prénatale; Centre Hospitalier Universitaire Vaudois CHUV; Lausanne Switzerland
| | - J.-L. Alessandri
- Pôle Enfants; CHU de la Réunion - Hôpital Félix Guyon; Saint-Denis France
| | - B. Doray
- Service de Génétique; CHU de la Réunion - Hôpital Félix Guyon; Saint-Denis France
| | - M. Miguet
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares «Anomalies du Développement et Syndromes Malformatifs» de l'Est; Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre; Strasbourg France
| | - D. Devys
- Laboratoire de Diagnostic Génétique; CHU de Strasbourg - Hôpital Civil; Strasbourg France
| | - P. Saugier-Veber
- Laboratoire de Génétique Moléculaire; Faculté de Médecine et de Pharmacie; Rouen France
| | - S. Drunat
- Laboratoire de Biologie Moléculaire; Hôpital Robert Debré; Paris France
| | - B. Aral
- Service de Biologie Moléculaire; CHU de Dijon; Dijon France
| | - V. Kremer
- Laboratoire de Cytogénétique, Hôpitaux Universitaires de Strasbourg; Hôpital de Hautepierre; Strasbourg France
| | - S. Rondeau
- Service de Pédiatrie Néonatale et Réanimation; CHU de Rouen; Rouen France
| | - A.-C. Tabet
- Laboratoire de Cytogénétique; Hôpital Robert Debré; Paris France
| | - J. Thevenon
- FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du Développement et Syndromes Malformatifs» de l'Est; Centre de Génétique, CHU de Dijon; Dijon France
- GAD, EA4271, Génétique et Anomalies du Développement; Université de Bourgogne; Dijon France
| | - C. Thauvin-Robinet
- FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du Développement et Syndromes Malformatifs» de l'Est; Centre de Génétique, CHU de Dijon; Dijon France
- GAD, EA4271, Génétique et Anomalies du Développement; Université de Bourgogne; Dijon France
| | - N. Perreton
- EPICIME-CIC 1407 de Lyon, Inserm; Service de Pharmacologie Clinique, CHU-Lyon; Bron France
| | - V. Des Portes
- Service de Neurologie Pédiatrique; CHU de Lyon-GH Est; Bron France
| | - L. Faivre
- FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du Développement et Syndromes Malformatifs» de l'Est; Centre de Génétique, CHU de Dijon; Dijon France
- GAD, EA4271, Génétique et Anomalies du Développement; Université de Bourgogne; Dijon France
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Grotto S, Cuisset JM, Marret S, Drunat S, Faure P, Audebert-Bellanger S, Desguerre I, Flurin V, Grebille AG, Guerrot AM, Journel H, Morin G, Plessis G, Renolleau S, Roume J, Simon-Bouy B, Touraine R, Willems M, Frébourg T, Verspyck E, Saugier-Veber P. Type 0 Spinal Muscular Atrophy: Further Delineation of Prenatal and Postnatal Features in 16 Patients. J Neuromuscul Dis 2016; 3:487-495. [DOI: 10.3233/jnd-160177] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Sarah Grotto
- Department of Genetics, Normandy Center for Medical Genomics and Personalized Medicine, Rouen University Hospital, Rouen, France
| | - Jean-Marie Cuisset
- Department of Pediatric Neurology, Roger Salengro Hospital, Lille Regional University Hospital, Lille, France
| | - Stéphane Marret
- Department of Pediatric Intensive Care, Rouen University Hospital, Rouen, France
- Inserm ERI 28, Institute for Research and Innovation in Biomedicine, Rouen University, France
| | - Séverine Drunat
- Department of Genetics, Robert Debre University Hospital, APHP, Paris, France
| | - Patricia Faure
- Inserm U1079, Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France
| | | | - Isabelle Desguerre
- Department of Pediatric Neurology, Necker-Enfants Malades Hospital, APHP, Paris, France
| | - Vincent Flurin
- Department of Pediatric Intensive Care, Le Mans Hospital, Le Mans, France
| | - Anne-Gaëlle Grebille
- Department of Obstetrics and Gynecology, Saint-Brieuc Hospital, Saint-Brieuc, France
| | - Anne-Marie Guerrot
- Department of Genetics, Normandy Center for Medical Genomics and Personalized Medicine, Rouen University Hospital, Rouen, France
| | - Hubert Journel
- Department of Genetics, Vannes Bretagne-Atlantique Hospital, Vannes, France
| | - Gilles Morin
- Department of Genetics, Amiens University Hospital, Amiens, France
| | | | - Sylvain Renolleau
- Department of Pediatric Intensive Care, Armand-Trousseau Children’s Hospital, APHP, Paris, France
| | - Joëlle Roume
- Department of Genetics, Poissy-Saint-Germain-en-Laye Hospital, Poissy, France
| | | | - Renaud Touraine
- Department of Genetics, Saint-Etienne University Hospital, Saint-Priest-en-Jarez, France
| | - Marjolaine Willems
- Department of Genetics, Necker-Enfants Malades Hospital, APHP, Paris, France
| | - Thierry Frébourg
- Department of Genetics, Normandy Center for Medical Genomics and Personalized Medicine, Rouen University Hospital, Rouen, France
- Inserm U1079, Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France
| | - Eric Verspyck
- Department of Obstetrics and Gynecology, Rouen University Hospital, Rouen, France
| | - Pascale Saugier-Veber
- Department of Genetics, Normandy Center for Medical Genomics and Personalized Medicine, Rouen University Hospital, Rouen, France
- Inserm U1079, Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France
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39
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Goldenberg A, Riccardi F, Tessier A, Pfundt R, Busa T, Cacciagli P, Capri Y, Coutton C, Delahaye-Duriez A, Frebourg T, Gatinois V, Guerrot AM, Genevieve D, Lecoquierre F, Jacquette A, Khau Van Kien P, Leheup B, Marlin S, Verloes A, Michaud V, Nadeau G, Mignot C, Parent P, Rossi M, Toutain A, Schaefer E, Thauvin-Robinet C, Van Maldergem L, Thevenon J, Satre V, Perrin L, Vincent-Delorme C, Sorlin A, Missirian C, Villard L, Mancini J, Saugier-Veber P, Philip N. Clinical and molecular findings in 39 patients with KBG syndrome caused by deletion or mutation of ANKRD11. Am J Med Genet A 2016; 170:2847-2859. [PMID: 27605097 DOI: 10.1002/ajmg.a.37878] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 07/19/2016] [Indexed: 12/28/2022]
Abstract
KBG syndrome, due to ANKRD11 alteration is characterized by developmental delay, short stature, dysmorphic facial features, and skeletal anomalies. We report a clinical and molecular study of 39 patients affected by KBG syndrome. Among them, 19 were diagnosed after the detection of a 16q24.3 deletion encompassing the ANKRD11 gene by array CGH. In the 20 remaining patients, the clinical suspicion was confirmed by the identification of an ANKRD11 mutation by direct sequencing. We present arguments to modulate the previously reported diagnostic criteria. Macrodontia should no longer be considered a mandatory feature. KBG syndrome is compatible with autonomous life in adulthood. Autism is less frequent than previously reported. We also describe new clinical findings with a potential impact on the follow-up of patients, such as precocious puberty and a case of malignancy. Most deletions remove the 5'end or the entire coding region but never extend toward 16q telomere suggesting that distal 16q deletion could be lethal. Although ANKRD11 appears to be a major gene associated with intellectual disability, KBG syndrome remains under-diagnosed. NGS-based approaches for sequencing will improve the detection of point mutations in this gene. Broad knowledge of the clinical phenotype is essential for a correct interpretation of the molecular results. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Alice Goldenberg
- Service de génétique, CHU de Rouen et Inserm U1079, Université de Rouen, Centre Normand de Génomique Médicale et Médecine Personnalisée, Rouen, France.
| | - Florence Riccardi
- Département de génétique médicale, Hôpital de la Timone-Enfant, Assistance publique hôpitaux de Marseille, Marseille, France
| | - Aude Tessier
- Service de génétique, CHU de Rouen et Inserm U1079, Université de Rouen, Centre Normand de Génomique Médicale et Médecine Personnalisée, Rouen, France
| | - Rolph Pfundt
- Afdeling Genetica, Radboud universitair medisch centrum, Nijmegen, Holland
| | - Tiffany Busa
- Département de génétique médicale, Hôpital de la Timone-Enfant, Assistance publique hôpitaux de Marseille, Marseille, France
| | | | - Yline Capri
- Unité fonctionnelle de génétique clinique, CHU Robert Debré, Paris, France
| | - Charles Coutton
- Unité fonctionnelle de génétique chromosomique, Hôpital Couple-Enfant, CHU de Grenoble, Université de Grenoble Alpes, INSERM 1209, CNRS UMR 5309, Grenoble, France
| | - Andree Delahaye-Duriez
- Laboratoire d'histologie-embryologie-cytogénétique-BDR, Hôpital Jean Verdier, CHU de Paris Seine-Saint-Denis, APHP et Université Paris 13, Sorbonne Paris Cité, Bondy, France
| | - Thierry Frebourg
- Service de génétique, CHU de Rouen et Inserm U1079, Université de Rouen, Centre Normand de Génomique Médicale et Médecine Personnalisée, Rouen, France
| | - Vincent Gatinois
- Laboratoire de génétique des maladies rares et auto-inflammatoires, Hôpital Arnaud de Villeneuve, CHRU de Montpellier, Montpellier, France
| | - Anne-Marie Guerrot
- Service de génétique, CHU de Rouen et Inserm U1079, Université de Rouen, Centre Normand de Génomique Médicale et Médecine Personnalisée, Rouen, France
| | - David Genevieve
- Département de génétique médicale, Hôpital Arnaud de Villeneuve, CHRU de Montpellier, Montpellier, France
| | - Francois Lecoquierre
- Service de génétique, CHU de Rouen et Inserm U1079, Université de Rouen, Centre Normand de Génomique Médicale et Médecine Personnalisée, Rouen, France
| | - Aurélia Jacquette
- APHP, Département de Génétique, Centre de référence déficiences intellectuelles de Causes Rares, GRC UPMC "déficiences intellectuelles et autisme", Groupe Hospitalier Pitié Salpêtrière, Paris, France
| | - Philippe Khau Van Kien
- Unité fonctionnelle de génétique médicale et cytogénétique, Hôpital Caremeau, CHU de Nîmes, Nîmes, France
| | - Bruno Leheup
- Service de génétique clinique, Hôpital de Brabois, CHU de Nancy, Nancy, France
| | - Sandrine Marlin
- Service de génétique, Hôpital Necker-Enfants Malades, Paris, France
| | - Alain Verloes
- Unité fonctionnelle de génétique clinique, CHU Robert Debré, Paris, France
| | - Vincent Michaud
- Service de génétique médicale, GH Pellegrin, CHU de Bordeaux, Bordeaux, France
| | - Gwenael Nadeau
- Unité fonctionnelle de cytogénétique, CH de Valence, Valence, France
| | - Cyril Mignot
- APHP, Département de Génétique, Centre de référence déficiences intellectuelles de Causes Rares, GRC UPMC "déficiences intellectuelles et autisme", Groupe Hospitalier Pitié Salpêtrière, Paris, France
| | - Philippe Parent
- Département de pédiatrie et génétique médicale, Hôpital Morvan, CHRU de Brest, Brest, France
| | - Massimiliano Rossi
- Service de génétique, Hôpital Femme-Mère-Enfant, GH Est, CHU de Lyon, Lyon, France
| | - Annick Toutain
- Service de génétique, Hôpital Bretonneau, CHRU de Tours, Tours, France
| | - Elise Schaefer
- Service de génétique médicale, Hôpital de Hautepierre, CHU de Strasbourg, Strasbourg, France
| | | | - Lionel Van Maldergem
- Centre de génétique humaine, Hôpital Saint-Jacques, CHRU de Besançon, Besançon, France
| | - Julien Thevenon
- Centre de génétique, Hôpital François Mitterrand, CHU Dijon Bourgogne, Dijon, France
| | - Véronique Satre
- Unité fonctionnelle de génétique chromosomique, Hôpital Couple-Enfant, CHU de Grenoble, Université de Grenoble Alpes, INSERM 1209, CNRS UMR 5309, Grenoble, France
| | - Laurence Perrin
- Unité fonctionnelle de génétique clinique, CHU Robert Debré, Paris, France
| | | | - Arthur Sorlin
- Service de génétique clinique, Hôpital de Brabois, CHU de Nancy, Nancy, France
| | - Chantal Missirian
- Département de génétique médicale, Hôpital de la Timone-Enfant, Assistance publique hôpitaux de Marseille, Marseille, France
| | | | - Julien Mancini
- Aix Marseille Université, Inserm, IRD, UMR_S912, SESSTIM, Marseille, France.,APHM, Hôpital de la Timone, BiosTIC, Marseille, France
| | - Pascale Saugier-Veber
- Service de génétique, CHU de Rouen et Inserm U1079, Université de Rouen, Centre Normand de Génomique Médicale et Médecine Personnalisée, Rouen, France
| | - Nicole Philip
- Département de génétique médicale, Hôpital de la Timone-Enfant, Assistance publique hôpitaux de Marseille, Marseille, France.,Aix Marseille Université, INSERM, GMGF, Marseille, France
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40
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Tlemsani C, Luscan A, Leulliot N, Bieth E, Afenjar A, Baujat G, Doco-Fenzy M, Goldenberg A, Lacombe D, Lambert L, Odent S, Pasche J, Sigaudy S, Buffet A, Violle-Poirsier C, Briand-Suleau A, Laurendeau I, Chin M, Saugier-Veber P, Vidaud D, Cormier-Daire V, Vidaud M, Pasmant E, Burglen L. SETD2 and DNMT3A screen in the Sotos-like syndrome French cohort. J Med Genet 2016; 53:743-751. [PMID: 27317772 DOI: 10.1136/jmedgenet-2015-103638] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 05/10/2016] [Accepted: 05/26/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Heterozygous NSD1 mutations were identified in 60%-90% of patients with Sotos syndrome. Recently, mutations of the SETD2 and DNMT3A genes were identified in patients exhibiting only some Sotos syndrome features. Both NSD1 and SETD2 genes encode epigenetic 'writer' proteins that catalyse methylation of histone 3 lysine 36 (H3K36me). The DNMT3A gene encodes an epigenetic 'reader' protein of the H3K36me chromatin mark. METHODS We aimed at confirming the implication of DNMT3A and SETD2 mutations in an overgrowth phenotype, through a comprehensive targeted-next generation sequencing (NGS) screening in 210 well-phenotyped index cases with a Sotos-like phenotype and no NSD1 mutation, from a French cohort. RESULTS Six unreported heterozygous likely pathogenic variants in DNMT3A were identified in seven patients: two nonsense variants and four de novo missense variants. One de novo unreported heterozygous frameshift variant was identified in SETD2 in one patient. All the four DNMT3A missense variants affected DNMT3A functional domains, suggesting a potential deleterious impact. DNMT3A-mutated index cases shared similar clinical features including overgrowth phenotype characterised by postnatal tall stature (≥+2SD), macrocephaly (≥+2SD), overweight or obesity at older age, intellectual deficiency and minor facial features. The phenotype associated with SETD2 mutations remains to be described more precisely. The p.Arg882Cys missense de novo constitutional DNMT3A variant found in two patients is the most frequent DNMT3A somatic mutation in acute leukaemia. CONCLUSIONS Our results illustrate the power of targeted NGS to identify rare disease-causing variants. These observations provided evidence for a unifying mechanism (disruption of apposition and reading of the epigenetic chromatin mark H3K36me) that causes an overgrowth syndrome phenotype. Further studies are needed in order to assess the role of SETD2 and DNMT3A in intellectual deficiency without overgrowth.
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Affiliation(s)
- Camille Tlemsani
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, Hôpitaux Universitaires Paris Centre, AP-HP, Paris, France.,EA7331, Faculté de Pharmacie, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Armelle Luscan
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, Hôpitaux Universitaires Paris Centre, AP-HP, Paris, France.,EA7331, Faculté de Pharmacie, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Nicolas Leulliot
- Faculté de Pharmacie, Laboratoire de Cristallographie et RMN Biologiques-CNRS UMR-8015, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Eric Bieth
- Service de Génétique, Hôpital Purpan, Toulouse, France
| | - Alexandra Afenjar
- Département de Génétique, Centre de référence des anomalies du développement et syndromes malformatifs, Hôpital Trousseau, AP-HP, Paris, France
| | - Geneviève Baujat
- INSERM UMR_1163, Département de Génétique, Université Paris Descartes, Sorbonne Paris Cité, Institut Imagine, Hôpital Necker-Enfants Malades, AP-HP, Paris, France
| | - Martine Doco-Fenzy
- Service de génétique HMB CHU Reims, EA 3801, SFR CAPSANTE, Reims, France
| | - Alice Goldenberg
- Service de Génétique, Centre Normand de Génomique Médicale et Médecine personnalisée, CHU de Rouen, Rouen, France
| | | | | | | | - Jérôme Pasche
- Service de Pédiatrie, Centre Hospitalier de Polynésie française, Papeete, Tahiti, France
| | - Sabine Sigaudy
- Service de Génétique, CHU de Marseille-Hôpital de la Timone, Marseille, France
| | - Alexandre Buffet
- Service d'Endocrinologie, Maladies Métaboliques, Nutrition, Hôpital Larrey, Toulouse, France
| | | | - Audrey Briand-Suleau
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, Hôpitaux Universitaires Paris Centre, AP-HP, Paris, France
| | - Ingrid Laurendeau
- EA7331, Faculté de Pharmacie, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Magali Chin
- EA7331, Faculté de Pharmacie, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Pascale Saugier-Veber
- Service de Génétique, Centre Normand de Génomique Médicale et Médecine personnalisée, CHU de Rouen, Rouen, France.,Inserm U1079, Université de Rouen, IRIB, Rouen, France
| | - Dominique Vidaud
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, Hôpitaux Universitaires Paris Centre, AP-HP, Paris, France.,EA7331, Faculté de Pharmacie, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Valérie Cormier-Daire
- Département de Génétique, Centre de référence des anomalies du développement et syndromes malformatifs, Hôpital Trousseau, AP-HP, Paris, France
| | - Michel Vidaud
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, Hôpitaux Universitaires Paris Centre, AP-HP, Paris, France.,EA7331, Faculté de Pharmacie, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Eric Pasmant
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, Hôpitaux Universitaires Paris Centre, AP-HP, Paris, France.,EA7331, Faculté de Pharmacie, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Lydie Burglen
- Département de Génétique, Centre de référence des anomalies du développement et syndromes malformatifs, Hôpital Trousseau, AP-HP, Paris, France.,INSERM UMR_1141, Paris, France
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41
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Mosca-Boidron AL, Gueneau L, Huguet G, Goldenberg A, Henry C, Gigot N, Pallesi-Pocachard E, Falace A, Duplomb L, Thevenon J, Duffourd Y, St-Onge J, Chambon P, Rivière JB, Thauvin-Robinet C, Callier P, Marle N, Payet M, Ragon C, Goubran Botros H, Buratti J, Calderari S, Dumas G, Delorme R, Lagarde N, Pinoit JM, Rosier A, Masurel-Paulet A, Cardoso C, Mugneret F, Saugier-Veber P, Campion D, Faivre L, Bourgeron T. A de novo microdeletion of SEMA5A in a boy with autism spectrum disorder and intellectual disability. Eur J Hum Genet 2015; 24:838-43. [PMID: 26395558 PMCID: PMC4867450 DOI: 10.1038/ejhg.2015.211] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 07/14/2015] [Accepted: 08/14/2015] [Indexed: 12/13/2022] Open
Abstract
Semaphorins are a large family of secreted and membrane-associated proteins necessary for wiring of the brain. Semaphorin 5A (SEMA5A) acts as a bifunctional guidance cue, exerting both attractive and inhibitory effects on developing axons. Previous studies have suggested that SEMA5A could be a susceptibility gene for autism spectrum disorders (ASDs). We first identified a de novo translocation t(5;22)(p15.3;q11.21) in a patient with ASD and intellectual disability (ID). At the translocation breakpoint on chromosome 5, we observed a 861-kb deletion encompassing the end of the SEMA5A gene. We delineated the breakpoint by NGS and observed that no gene was disrupted on chromosome 22. We then used Sanger sequencing to search for deleterious variants affecting SEMA5A in 142 patients with ASD. We also identified two independent heterozygous variants located in a conserved functional domain of the protein. Both variants were maternally inherited and predicted as deleterious. Our genetic screens identified the first case of a de novo SEMA5A microdeletion in a patient with ASD and ID. Although our study alone cannot formally associate SEMA5A with susceptibility to ASD, it provides additional evidence that Semaphorin dysfunction could lead to ASD and ID. Further studies on Semaphorins are warranted to better understand the role of this family of genes in susceptibility to neurodevelopmental disorders.
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Affiliation(s)
- Anne-Laure Mosca-Boidron
- Laboratoire de Cytogénétique, Plateau technique de Biologie, CHU Dijon, Dijon, France.,Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | - Lucie Gueneau
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | - Guillaume Huguet
- Institut Pasteur, Human Genetics and Cognitive Functions Unit, Paris, France.,CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | | | - Céline Henry
- Centre Resource Autisme Bourgogne, CHU Dijon, Dijon, France
| | - Nadège Gigot
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | | | - Antonio Falace
- Institut de Neurobiologie de la Méditerranée INSERM UMR901, Marseille, France
| | - Laurence Duplomb
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | - Julien Thevenon
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence «Anomalies du Développement et Syndromes Malformatifs», Hôpital d'Enfants, CHU Dijon, Dijon, France
| | - Yannis Duffourd
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | - Judith St-Onge
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France.,Laboratoire de Génétique Moléculaire, Plateau Technique de Biologie, CHU Dijon, Dijon, France
| | | | - Jean-Baptiste Rivière
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France.,Laboratoire de Génétique Moléculaire, Plateau Technique de Biologie, CHU Dijon, Dijon, France
| | - Christel Thauvin-Robinet
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence «Anomalies du Développement et Syndromes Malformatifs», Hôpital d'Enfants, CHU Dijon, Dijon, France
| | - Patrick Callier
- Laboratoire de Cytogénétique, Plateau technique de Biologie, CHU Dijon, Dijon, France.,Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | - Nathalie Marle
- Laboratoire de Cytogénétique, Plateau technique de Biologie, CHU Dijon, Dijon, France.,Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | - Muriel Payet
- Laboratoire de Cytogénétique, Plateau technique de Biologie, CHU Dijon, Dijon, France.,Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | - Clemence Ragon
- Laboratoire de Cytogénétique, Plateau technique de Biologie, CHU Dijon, Dijon, France.,Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France
| | - Hany Goubran Botros
- Institut Pasteur, Human Genetics and Cognitive Functions Unit, Paris, France.,CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - Julien Buratti
- Institut Pasteur, Human Genetics and Cognitive Functions Unit, Paris, France.,CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France.,Fondation FondaMental, Créteil, France
| | - Sophie Calderari
- Institut Pasteur, Human Genetics and Cognitive Functions Unit, Paris, France.,CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France.,Fondation FondaMental, Créteil, France
| | - Guillaume Dumas
- Institut Pasteur, Human Genetics and Cognitive Functions Unit, Paris, France.,CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - Richard Delorme
- Institut Pasteur, Human Genetics and Cognitive Functions Unit, Paris, France.,CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France.,Psychiatrie de l'enfance et de l'adolescence - Hôpital Robert-Debré, Paris, France
| | | | | | - Antoine Rosier
- Centre de Ressources Autisme de Haute Normandie, Saint Etienne du Rouvray, France
| | - Alice Masurel-Paulet
- Centre de Génétique et Centre de Référence «Anomalies du Développement et Syndromes Malformatifs», Hôpital d'Enfants, CHU Dijon, Dijon, France
| | - Carlos Cardoso
- Institut de Neurobiologie de la Méditerranée INSERM UMR901, Marseille, France
| | - Francine Mugneret
- Laboratoire de Cytogénétique, Plateau technique de Biologie, CHU Dijon, Dijon, France
| | | | | | - Laurence Faivre
- Equipe Génétique et Anomalies du Développement, Faculté de Médecine, Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence «Anomalies du Développement et Syndromes Malformatifs», Hôpital d'Enfants, CHU Dijon, Dijon, France
| | - Thomas Bourgeron
- Institut Pasteur, Human Genetics and Cognitive Functions Unit, Paris, France.,CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France.,Fondation FondaMental, Créteil, France
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Nambot S, Masurel A, El Chehadeh S, Mosca-Boidron AL, Thauvin-Robinet C, Lefebvre M, Marle N, Thevenon J, Perez-Martin S, Dulieu V, Huet F, Plessis G, Andrieux J, Jouk PS, Billy-Lopez G, Coutton C, Morice-Picard F, Delrue MA, Heron D, Rooryck C, Goldenberg A, Saugier-Veber P, Joly-Hélas G, Calenda P, Kuentz P, Manouvrier-Hanu S, Dupuis-Girod S, Callier P, Faivre L. 9q33.3q34.11 microdeletion: new contiguous gene syndrome encompassing STXBP1, LMX1B and ENG genes assessed using reverse phenotyping. Eur J Hum Genet 2015; 24:830-7. [PMID: 26395556 DOI: 10.1038/ejhg.2015.202] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 07/26/2015] [Accepted: 07/30/2015] [Indexed: 01/01/2023] Open
Abstract
The increasing use of array-CGH in malformation syndromes with intellectual disability could lead to the description of new contiguous gene syndrome by the analysis of the gene content of the microdeletion and reverse phenotyping. Thanks to a national and international call for collaboration by Achropuce and Decipher, we recruited four patients carrying de novo overlapping deletions of chromosome 9q33.3q34.11, including the STXBP1, the LMX1B and the ENG genes. We restrained the selection to these three genes because the effects of their haploinsufficency are well described in the literature and easily recognizable clinically. All deletions were detected by array-CGH and confirmed by FISH. The patients display common clinical features, including intellectual disability with epilepsy, owing to the presence of STXBP1 within the deletion, nail dysplasia and bone malformations, in particular patellar abnormalities attributed to LMX1B deletion, epistaxis and cutaneous-mucous telangiectasias explained by ENG haploinsufficiency and common facial dysmorphism. This systematic analysis of the genes comprised in the deletion allowed us to identify genes whose haploinsufficiency is expected to lead to disease manifestations and complications that require personalized follow-up, in particular for renal, eye, ear, vascular and neurological manifestations.
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Affiliation(s)
- Sophie Nambot
- Centre de Génétique et Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Hôpital d'Enfants, CHU, Dijon, France.,Laboratoire de Cytogénétique, Plateau Technique de Biologie, CHU, Dijon, France
| | - Alice Masurel
- Centre de Génétique et Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Hôpital d'Enfants, CHU, Dijon, France
| | - Salima El Chehadeh
- Centre de Génétique et Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Hôpital d'Enfants, CHU, Dijon, France
| | | | - Christel Thauvin-Robinet
- Centre de Génétique et Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Hôpital d'Enfants, CHU, Dijon, France.,FHU TRANSLAD, CHU Dijon et Université de Bourgogne-Franche Comté, Dijon, France
| | - Mathilde Lefebvre
- Centre de Génétique et Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Hôpital d'Enfants, CHU, Dijon, France
| | - Nathalie Marle
- Laboratoire de Cytogénétique, Plateau Technique de Biologie, CHU, Dijon, France
| | - Julien Thevenon
- Centre de Génétique et Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Hôpital d'Enfants, CHU, Dijon, France.,Laboratoire de Cytogénétique, Plateau Technique de Biologie, CHU, Dijon, France
| | | | - Véronique Dulieu
- Service de Soins de Suite et de Réeducation Pédiatrique, Pôle Réeducation Réadaptation, CHU, Dijon, France
| | - Frédéric Huet
- Service de Pédiatrie 1, Hôpital d'Enfants, CHU, Dijon, France
| | - Ghislaine Plessis
- Centre de Compétence des Anomalies du Développement, CHU, Caen, France
| | - Joris Andrieux
- Laboratoire de Génétique Médicale, Hôpital Jeanne de Flandre, CHRU, Lille, France
| | - Pierre-Simon Jouk
- Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Centre Est, CHU, Grenoble, France.,UMR CNRS 5525 TIMC, équipe DYCTIM, CHU, Grenoble, France
| | - Gipsy Billy-Lopez
- Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Centre Est, CHU, Grenoble, France
| | - Charles Coutton
- Laboratoire de Génétique Chromosomique, Pôle Couple/Enfants, CHU Grenoble, Université Grenoble Alpes, AGIM CNRS FRE3405 équipe AGC, Grenoble, France
| | - Fanny Morice-Picard
- Centre de Référence des Anomalies du Développement et Syndromes Malformatifs, CHU, Bordeaux, France
| | - Marie-Ange Delrue
- Centre de Référence des Anomalies du Développement et Syndromes Malformatifs, CHU, Bordeaux, France
| | - Delphine Heron
- Unité de Génetique Clinique, Hôpital La Pité Salpétrière, Paris, France
| | - Caroline Rooryck
- Laboratoire de Génétique Moléculaire, Plateau Technique de Biologie Moléculaire, CHU, Bordeaux, France
| | - Alice Goldenberg
- Centre de Compétence des Anomalies du Développement et Syndromes Malformatifs, CHU, Rouen, France
| | - Pascale Saugier-Veber
- Centre de Compétence des Anomalies du Développement et Syndromes Malformatifs, CHU, Rouen, France
| | - Géraldine Joly-Hélas
- Laboratoire de Cytologie, Cytogénétique et Biologie de la Reproduction, CHU, Rouen, France
| | | | - Paul Kuentz
- FHU TRANSLAD, CHU Dijon et Université de Bourgogne-Franche Comté, Dijon, France
| | - Sylvie Manouvrier-Hanu
- Clinique de Génétique Médicale, Hôpital Jeanne de Flandre, CHRU, Lille, France.,Faculté de Médecine, Université Lille 2, Lille, France
| | - Sophie Dupuis-Girod
- Service de Génétique, Centre de Référence pour la Maladie de Rendu-Osler, Hôpital Femme-Mère-Enfant, Groupe Hospitalier Est, Bron, France
| | - Patrick Callier
- Laboratoire de Cytogénétique, Plateau Technique de Biologie, CHU, Dijon, France.,FHU TRANSLAD, CHU Dijon et Université de Bourgogne-Franche Comté, Dijon, France
| | - Laurence Faivre
- Centre de Génétique et Centre de Référence "Anomalies du Développement et Syndromes Malformatifs", Hôpital d'Enfants, CHU, Dijon, France.,FHU TRANSLAD, CHU Dijon et Université de Bourgogne-Franche Comté, Dijon, France
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Abstract
PURPOSE To report the spectrum of phenotypes in patients with autoimmune polyendocrinopathy syndrome type 1 (APS1)-related keratopathy. METHODS In this retrospective observational case series, 6 patients followed for APS1 were included. Data collected included family history, age at presentation, and systemic and ophthalmic manifestations. The 14 coding exons of the autoimmune regulator (AIRE) gene were sequenced. RESULTS The age at the onset of keratopathy ranged from 4 to 20 years. The ocular symptoms varied from mild photophobia to severe pain, and visual acuity was from light perception to 20/20 Snellen equivalent. Heterogeneous corneal involvement was observed, ranging from minimal superficial punctate staining to severe stromal scarring with deep corneal neovascularization. The severity of ophthalmic findings was uncorrelated to that of systemic manifestations. The genetic analyses identified 2 novel mutations (c.173C>A in exon 2 and c.892G>T in exon 8) and 4 known mutations (c.62C>T in exon 1, c.415C>T in exon 3, c.1096-1G>A in intron 9, and c.1193delC in exon 10) in the AIRE gene. In patients with identical AIRE mutations, including within a sib-pair, heterogeneous phenotypes were observed. CONCLUSIONS Keratopathy can be an early and severe manifestation of APS1, which contributes to the global prognosis of the disease. Its mechanisms remain to be elucidated.
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Affiliation(s)
- Aude Couturier
- *APHP, Hôpital Lariboisière, Service d'Ophtalmologie, Paris, France; †Université Paris Diderot, Sorbonne Paris Cité, Paris, France; ‡APHP, Hôpital Cochin, Service d'Ophtalmologie, Paris, France; §Université Paris Descartes, Faculté de Médecine, Paris, France; ¶Institute for Biomedical Research, Faculty of Medecine, University of Rouen, France; ‖Department of Genetics, Rouen University Hospital, Rouen, France; **AP-HP, Hôpital Robert Debré, Service d'Endocrinologie Diabétologie Pédiatrique et Centre de Référence des Maladies Endocriniennes Rares de la Croissance, and Institut National de la Santé et de la Recherche Médicale, Paris, France; and ††APHP, Hôpital Cochin, Service d'Endocrinologie, Paris, France
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Vezain M, Gérard B, Drunat S, Funalot B, Fehrenbach S, N'Guyen-Viet V, Vallat JM, Frébourg T, Tosi M, Martins A, Saugier-Veber P. A leaky splicing mutation affecting SMN1 exon 7 inclusion explains an unexpected mild case of spinal muscular atrophy. Hum Mutat 2014; 32:989-94. [PMID: 21542063 DOI: 10.1002/humu.21528] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Accepted: 04/19/2011] [Indexed: 11/10/2022]
Abstract
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder resulting, in most cases, from homozygous deletions of the SMN1 gene or, in rare cases, from SMN1 intragenic mutations. Here we describe the identification and characterization of c.835-3C>T, a novel SMA-causing mutation detected in the intron 6 of the single SMN1 allele of a type IV SMA patient. We demonstrate both ex vivo and in vivo that c.835-3C>T is a deleterious splicing mutation that induces a modest but unequivocal exclusion of exon 7 from the SMN1 transcripts, its "leakiness" explaining the exceptionally mild phenotype of this patient. This mutation creates a putative high-affinity binding site for the splicing repressor protein hnRNP A1 overlapping the splice acceptor site of exon 7 (UAG|GGU). Our findings support the current therapeutic strategies aiming at correcting exon 7 splicing in SMA patients, and bring clues about the level of exon 7 inclusion required to achieve a therapeutic effect.
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Affiliation(s)
- Myriam Vezain
- Inserm U614, IFRMP, Institute for Biomedical Research, Rouen University Medical School, Rouen, France
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Puzenat E, Bellaud G, Saugier-Veber P, Crémillieux C, Mignot B, Humbert P, Aubin F. [The challenge for dermatologists of early APECED diagnosis]. Ann Dermatol Venereol 2014; 141:290-4. [PMID: 24703644 DOI: 10.1016/j.annder.2014.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 10/31/2013] [Accepted: 01/10/2014] [Indexed: 11/20/2022]
Abstract
BACKGROUND Polyglandular auto-immune syndrome type 1 (PAS-1) or auto-immune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is a rare autosomal recessive disorder linked to auto-immune regulator (AIRE) gene mutations. Herein, we report the case of a 3-year-old boy with APECED emphasizing the wide phenotypic variability and the extent of skin lesions. PATIENTS AND METHODS A 3-year-old boy with a history of auto-immune hepatitis was referred for a generalized pruriginous urticaria-like eruption present for one month. He was born to non-consanguineous parents. Cutaneous examination revealed twenty-nail dystrophy, which had been present since the age of 2 years. Both direct microscopy and culture of nail samples were negative for Candida albicans. Esophagogastroduodenoscopy revealed esophageal candidiasis. A diagnosis of APECED was suspected and subsequently confirmed by molecular analysis of the AIRE gene, which showed two mutations. No other auto-immune endocrinopathies were found. DISCUSSION Our case report illustrates the phenotypic variability of APECED with the absence of typical manifestations such as Addison's disease and hypoparathyroidism. APECED should thus be systematically suspected in young children presenting with cutaneous lesions associated with mucocutaneous candidiasis or auto-immune disease, even in the absence of known endocrinopathies. CONCLUSION Dermatologists should be aware of this association since early diagnosis of APECED is critical in preventing life-threatening endocrinological crises.
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Affiliation(s)
- E Puzenat
- Service de dermatologie, CHU Jean Minjoz, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France.
| | - G Bellaud
- Service de dermatologie, CHU Jean Minjoz, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France
| | - P Saugier-Veber
- Laboratoire de génétique moléculaire, CHU, 1, rue de Germont, 76000 Rouen, France
| | - C Crémillieux
- Service de pédiatrie, CHU de Besançon, 25030 Besançon cedex, France
| | - B Mignot
- Service de pédiatrie, CHU de Besançon, 25030 Besançon cedex, France
| | - P Humbert
- Service de dermatologie, CHU Jean Minjoz, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; Inserm U1098, SFR FED 4234 IBCT, université de Franche-Comté, 25030 Besançon cedex, France
| | - F Aubin
- Service de dermatologie, CHU Jean Minjoz, 3, boulevard Alexandre-Fleming, 25030 Besançon cedex, France; EA3081, SFR FED 4234 IBCT, université de Franche-Comté, 25030 Besançon cedex, France
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46
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Grotto S, Drouin-Garraud V, Ounap K, Puusepp-Benazzouz H, Schuurs-Hoeijmakers J, Le Meur N, Chambon P, Fehrenbach S, van Bokhoven H, Frébourg T, de Brouwer APM, Saugier-Veber P. Clinical assessment of five patients with BRWD3 mutation at Xq21.1 gives further evidence for mild to moderate intellectual disability and macrocephaly. Eur J Med Genet 2014; 57:200-6. [PMID: 24462886 DOI: 10.1016/j.ejmg.2013.12.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 12/31/2013] [Indexed: 01/22/2023]
Abstract
Truncating mutations of the BRWD3 gene have been reported in two distinct families with in total four patients so far. By using array-CGH, we detected a 74 Kb de novo deletion encompassing exons 11 through 41 of BRWD3 at Xq21.1 in a 20 year old boy presenting with syndromic intellectual disability. In addition, by using exome sequencing, we ascertained a family with a BRWD3 nonsense mutation, p.Tyr1131*, in four males with intellectual disability. We compared the clinical presentation of these five patients to that of the four patients already described in the literature for further delineation of the clinical spectrum in BRWD3-related intellectual disability. The main symptoms are mild to moderate intellectual disability (n = 9/9) with speech delay (n = 8/8), behavioral disturbances (n = 7/8), macrocephaly (n = 7/9), dysmorphic facial features (n = 9/9) including prominent forehead, pointed chin, deep-set eyes, abnormal ears, and broad hands and feet (n = 6/6), and skeletal symptoms (n = 7/7) like pes planus, scoliosis, kyphosis and cubitus valgus.
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Affiliation(s)
- Sarah Grotto
- Department of Genetics, Rouen University Hospital, Rouen, France
| | | | - Katrin Ounap
- Department of Genetics, United Laboratories, Tartu University Hospital, Tartu, Estonia; Department of Pediatrics, University of Tartu, Tartu, Estonia
| | - Helen Puusepp-Benazzouz
- Department of Pediatrics, University of Tartu, Tartu, Estonia; Department of Pediatrics, The Children's Hospital at Westmead, Sydney Children Hospital Network, Sydney, Australia
| | - Janneke Schuurs-Hoeijmakers
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands; Nijmegen Centre for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Nathalie Le Meur
- Department of Cytogenetics, EFS Normandie, Bois-Guillaume, France
| | - Pascal Chambon
- Department of Cytogenetics and Reproductive Biology, Rouen University Hospital, Rouen, France
| | | | - Hans van Bokhoven
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands; Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Thierry Frébourg
- Department of Genetics, Rouen University Hospital, Rouen, France; Inserm U1079, Rouen, France; Normandie University, IRIB, Rouen, France
| | - Arjan P M de Brouwer
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands; Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Pascale Saugier-Veber
- Department of Genetics, Rouen University Hospital, Rouen, France; Inserm U1079, Rouen, France; Normandie University, IRIB, Rouen, France.
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47
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Laquérriere A, Maluenda J, Camus A, Fontenas L, Dieterich K, Nolent F, Zhou J, Monnier N, Latour P, Gentil D, Héron D, Desguerres I, Landrieu P, Beneteau C, Delaporte B, Bellesme C, Baumann C, Capri Y, Goldenberg A, Lyonnet S, Bonneau D, Estournet B, Quijano-Roy S, Francannet C, Odent S, Saint-Frison MH, Sigaudy S, Figarella-Branger D, Gelot A, Mussini JM, Lacroix C, Drouin-Garraud V, Malinge MC, Attié-Bitach T, Bessieres B, Bonniere M, Encha-Razavi F, Beaufrère AM, Khung-Savatovsky S, Perez MJ, Vasiljevic A, Mercier S, Roume J, Trestard L, Saugier-Veber P, Cordier MP, Layet V, Legendre M, Vigouroux-Castera A, Lunardi J, Bayes M, Jouk PS, Rigonnot L, Granier M, Sternberg D, Warszawski J, Gut I, Gonzales M, Tawk M, Melki J. Mutations in CNTNAP1 and ADCY6 are responsible for severe arthrogryposis multiplex congenita with axoglial defects. Hum Mol Genet 2013; 23:2279-89. [PMID: 24319099 DOI: 10.1093/hmg/ddt618] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Non-syndromic arthrogryposis multiplex congenita (AMC) is characterized by multiple congenital contractures resulting from reduced fetal mobility. Genetic mapping and whole exome sequencing (WES) were performed in 31 multiplex and/or consanguineous undiagnosed AMC families. Although this approach identified known AMC genes, we here report pathogenic mutations in two new genes. Homozygous frameshift mutations in CNTNAP1 were found in four unrelated families. Patients showed a marked reduction in motor nerve conduction velocity (<10 m/s) and transmission electron microscopy (TEM) of sciatic nerve in the index cases revealed severe abnormalities of both nodes of Ranvier width and myelinated axons. CNTNAP1 encodes CASPR, an essential component of node of Ranvier domains which underlies saltatory conduction of action potentials along the myelinated axons, an important process for neuronal function. A homozygous missense mutation in adenylate cyclase 6 gene (ADCY6) was found in another family characterized by a lack of myelin in the peripheral nervous system (PNS) as determined by TEM. Morpholino knockdown of the zebrafish orthologs led to severe and specific defects in peripheral myelin in spite of the presence of Schwann cells. ADCY6 encodes a protein that belongs to the adenylate cyclase family responsible for the synthesis of cAMP. Elevation of cAMP can mimic axonal contact in vitro and upregulates myelinating signals. Our data indicate an essential and so far unknown role of ADCY6 in PNS myelination likely through the cAMP pathway. Mutations of genes encoding proteins of Ranvier domains or involved in myelination of Schwann cells are responsible for novel and severe human axoglial diseases.
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Affiliation(s)
- Annie Laquérriere
- Pathology Laboratory and NeoVasc Region-Inserm Team ERI28, Institute of Research for Innovation in Biomedicine, University of Rouen, 76031 Rouen, France
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Adle-Biassette H, Saugier-Veber P, Fallet-Bianco C, Delezoide AL, Razavi F, Drouot N, Bazin A, Beaufrère AM, Bessières B, Blesson S, Bucourt M, Carles D, Devisme L, Dijoud F, Fabre B, Fernandez C, Gaillard D, Gonzales M, Jossic F, Joubert M, Laurent N, Leroy B, Loeuillet L, Loget P, Marcorelles P, Martinovic J, Perez MJ, Satge D, Sinico M, Tosi M, Benichou J, Gressens P, Frebourg T, Laquerrière A. Neuropathological review of 138 cases genetically tested for X-linked hydrocephalus: evidence for closely related clinical entities of unknown molecular bases. Acta Neuropathol 2013; 126:427-42. [PMID: 23820807 DOI: 10.1007/s00401-013-1146-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Revised: 06/15/2013] [Accepted: 06/17/2013] [Indexed: 01/30/2023]
Abstract
L1 syndrome results from mutations in the L1CAM gene located at Xq28. It encompasses a wide spectrum of diseases, X-linked hydrocephalus being the most severe phenotype detected in utero, and whose pathophysiology is incompletely understood. The aim of this study was to report detailed neuropathological data from patients with mutations, to delineate the neuropathological criteria required for L1CAM gene screening in foetuses by characterizing the sensitivity, specificity and positive predictive value of the cardinal signs, and to discuss the main differential diagnoses in non-mutated foetuses in order to delineate closely related conditions without L1CAM mutations. Neuropathological data from 138 cases referred to our genetic laboratory for screening of the L1CAM gene were retrospectively reviewed. Fifty-seven cases had deleterious L1CAM mutations. Of these, 100 % had hydrocephalus, 88 % adducted thumbs, 98 % pyramidal tract agenesis/hypoplasia, 90 % stenosis of the aqueduct of Sylvius and 68 % agenesis/hypoplasia of the corpus callosum. Two foetuses had L1CAM mutations of unknown significance. Seventy-nine cases had no L1CAM mutations; these were subdivided into four groups: (1) hydrocephalus sometimes associated with corpus callosum agenesis (44 %); (2) atresia/forking of the aqueduct of Sylvius/rhombencephalosynapsis spectrum (27 %); (3) syndromic hydrocephalus (9 %), and (4) phenocopies with no mutations in the L1CAM gene (20 %) and in whom family history strongly suggested an autosomal recessive mode of transmission. These data underline the existence of closely related clinical entities whose molecular bases are currently unknown. The identification of the causative genes would greatly improve our knowledge of the defective pathways involved in these cerebral malformations.
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Affiliation(s)
- Homa Adle-Biassette
- Department of Pathology, Lariboisière Hospital, APHP, 2 Rue Ambroise Paré, 75010, Paris, France.
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Tordjman S, Anderson GM, Cohen D, Kermarrec S, Carlier M, Touitou Y, Saugier-Veber P, Lagneaux C, Chevreuil C, Verloes A. Presence of autism, hyperserotonemia, and severe expressive language impairment in Williams-Beuren syndrome. Mol Autism 2013; 4:29. [PMID: 23972161 PMCID: PMC3765460 DOI: 10.1186/2040-2392-4-29] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 07/30/2013] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Deletion of the Williams-Beuren syndrome (WBS) critical region (WBSCR), at 7q11.23, causes a developmental disorder commonly characterized by hypersociability and excessive talkativeness and often considered the opposite behavioral phenotype to autism. Duplication of the WBSCR leads to severe delay in expressive language. Gene-dosage effects on language development at 7q11.23 have been hypothesized. METHODS Molecular characterization of the WBSCR was performed by fluorescence in situ hybridization and high-resolution single-nucleotide polymorphism array in two individuals with severe autism enrolled in a genetic study of autism who showed typical WBS facial dysmorphism on systematic clinical genetic examination. The serotonin transporter promoter polymorphism (5-HTTLPR, locus SLC6A4) was genotyped. Platelet serotonin levels and urinary 6-sulfatoxymelatonin excretion were measured. Behavioral and cognitive phenotypes were examined. RESULTS The two patients had common WBSCR deletions between proximal and medial low copy repeat clusters, met diagnostic criteria for autism and displayed severe impairment in communication, including a total absence of expressive speech. Both patients carried the 5-HTTLPR ss genotype and exhibited platelet hyperserotonemia and low melatonin production. CONCLUSIONS Our observations indicate that behaviors and neurochemical phenotypes typically associated with autism can occur in patients with common WBSCR deletions. The results raise intriguing questions about phenotypic heterogeneity in WBS and regarding genetic and/or environmental factors interacting with specific genes at 7q11.23 sensitive to dosage alterations that can influence the development of social communication skills. Thus, the influence of WBSCR genes on social communication expression might be dramatically modified by other genes, such as 5-HTTLPR, known to influence the severity of social communication impairments in autism, or by environmental factors, such as hyperserotonemia, given that hyperserotonemia is found in WBS associated with autism but not in WBS without autism. In this regard, WBS provides a potentially fruitful model with which to develop integrated genetic, cognitive, behavioral and neurochemical approaches to study genotype-phenotype correlations, possible gene-environment interactions and genetic background effects. The results underscore the importance of considering careful clinical and molecular genetic examination of individuals diagnosed with autism.
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Affiliation(s)
- Sylvie Tordjman
- Department of Child and Adolescent Psychiatry, Centre Hospitalier Guillaume Regnier and Medical School of the University of Rennes 1, Rennes 35000, France
- Laboratoire de la Psychologie de la Perception, CNRS UMR 8158, Centre Biomédical des Saints Pères, 75006 Paris, France
| | - George M Anderson
- The Child Study Center, Yale University School of Medicine, New Haven CT 06511, USA
| | - David Cohen
- Université Pierre et Marie Curie and CNRS UMR 7222, Paris, France
| | - Solenn Kermarrec
- Department of Child and Adolescent Psychiatry, Centre Hospitalier Guillaume Regnier and Medical School of the University of Rennes 1, Rennes 35000, France
| | - Michèle Carlier
- Laboratoire de Psychologie Cognitive, Aix-Marseille University, CNRS UMR 7290, Marseille, France
| | - Yvan Touitou
- Chronobiology Unit, Rothschild Foundation, Paris, France
| | | | - Céline Lagneaux
- Department of Genetics, AP-HP-Robert Debré University Hospital, Paris, France
| | - Claire Chevreuil
- Department of Child and Adolescent Psychiatry, Centre Hospitalier Guillaume Regnier and Medical School of the University of Rennes 1, Rennes 35000, France
| | - Alain Verloes
- Department of Genetics, AP-HP-Robert Debré University Hospital, Paris, France
- INSERM U676, AP-HP-Robert Debré University Hospital, Paris, France
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Crahes M, Saugier-Veber P, Patrier S, Aziz M, Pirot N, Brasseur-Daudruy M, Layet V, Frébourg T, Laquerrière A. Foetal presentation of cartilage hair hypoplasia with extensive granulomatous inflammation. Eur J Med Genet 2013; 56:365-70. [DOI: 10.1016/j.ejmg.2013.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 04/17/2013] [Indexed: 12/01/2022]
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