1. Phenotypic spectrum of TGFB3 disease-causing variants in a Dutch-French cohort and first report of a homozygous patient
- Author
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Eline Overwater, A.C. Brehin, Bertrand Isidor, Luisa Marsili, Ho Y. Cheung, Yvonne Hilhorst-Hofstee, Catherine Boileau, Nadine Hanna, Els Voorhoeve, Fanny Morice-Picard, J. Peter van Tintelen, Yline Capri, Laurent Gouya, Pauline Arnaud, Eelco Dulfer, Clémence Vanlerberghe, Marieke J.H. Baars, Alessandra Maugeri, Arjan C. Houweling, Marion Gérard, Sylvie Odent, Leonie A. Menke, Lauriane Le Gloan, Dominique Bonneau, Geneviève Baujat, Vrije Universiteit Amsterdam [Amsterdam] (VU), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Laboratoire de Recherche Vasculaire Translationnelle (LVTS (UMR_S_1148 / U1148)), Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Sorbonne Paris Nord, Imagine - Institut des maladies génétiques (IMAGINE - U1163), Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), University of Amsterdam [Amsterdam] (UvA), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de génétique [Robert Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-AP-HP Hôpital universitaire Robert-Debré [Paris], University Medical Center Groningen [Groningen] (UMCG), Service de Génétique [CHU Caen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), Leiden University Medical Center (LUMC), Centre hospitalier universitaire de Nantes (CHU Nantes), Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Bordeaux [Bordeaux], University Medical Center [Utrecht], Human Genetics, Graduate School, ACS - Heart failure & arrhythmias, Amsterdam Reproduction & Development (AR&D), General Paediatrics, Amsterdam Neuroscience - Complex Trait Genetics, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP)-Université Sorbonne Paris Nord, Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Human genetics, ACS - Atherosclerosis & ischemic syndromes, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité)-Université Sorbonne Paris Nord, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Universiteit Leiden, and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
- Subjects
0301 basic medicine ,Male ,[SDV]Life Sciences [q-bio] ,MARFAN ,030105 genetics & heredity ,Loeys–Dietz syndrome ,Arachnodactyly ,Genotype-phenotype distinction ,connective tissue disorder ,Medicine ,aortic dissection ,Child ,Connective Tissue Diseases ,Genetics (clinical) ,ComputingMilieux_MISCELLANEOUS ,Aortic dissection ,THORACIC AORTIC-ANEURYSM ,Homozygote ,Middle Aged ,aortic dilatation ,Penetrance ,3. Good health ,Pedigree ,Phenotype ,Child, Preschool ,Cohort ,Female ,Joint hypermobility ,Adult ,medicine.medical_specialty ,Heterozygote ,GENES ,Adolescent ,Genotype ,03 medical and health sciences ,Young Adult ,Transforming Growth Factor beta3 ,TGFB3 ,Internal medicine ,Genetics ,Humans ,Genetic Predisposition to Disease ,Expressivity (genetics) ,[SDV.GEN]Life Sciences [q-bio]/Genetics ,business.industry ,transforming growth factor beta 3 ,medicine.disease ,Loeys-Dietz syndrome ,030104 developmental biology ,Mutation ,business - Abstract
International audience; Disease-causing variants in TGFB3 cause an autosomal dominant connective tissue disorder which is hard to phenotypically delineate because of the small number of identified cases. The purpose of this retrospective cross-sectional multicentre study is to elucidate the genotype and phenotype in an international cohort of TGFB3 patients. Eleven (8 novel) TGFB3 disease-causing variants were identified in 32 patients (17 families). Aortic root dilatation and mitral valve disease represented the most common cardiovascular findings, reported in 29% and 32% of patients, respectively. Dissection involving distal aortic segments occurred in two patients at age 50 and 52 years. A high frequency of systemic features (65% high-arched palate, 63% arachnodactyly, 57% pectus deformity, 52% joint hypermobility) was observed. In familial cases, incomplete penetrance and variable clinical expressivity were noted. Our cohort included the first described homozygous patient, who presented with a more severe phenotype compared to her heterozygous relatives. In conclusion, TGFB3 variants were associated with a high percentage of systemic features and aortic disease (dilatation/dissection) in 35% of patients. No deaths occurred from cardiovascular events or pregnancy-related complications. Nevertheless, homozygosity may be driving a more severe phenotype.
- Published
- 2020
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