Cited by 251Connective tissue disorders researchDermatological and Skeletal DisordersGenomics and Rare Diseases

The type of variants at the COL3A1 gene associates with the phenotype and severity of vascular Ehlers-Danlos syndrome

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Frank, Michael, Albuisson, Juliette, Ranque, Brigitte, Golmard, Lisa, Mazzella, Jean-Michael, Bal-Theoleyre, Laurence, Fauret, Anne-Laure, Mirault, Tristan +7 more·2015·European Journal of Human Genetics

Abstract

Vascular Ehlers-Danlos syndrome (vEDS) is a rare and severe autosomal dominant disorder caused by variants at the COL3A1 gene. Clinical characteristics and course of disease of 215 molecularly proven patients (146 index cases and 69 relatives) were analysed. We found 126 distincts variants that were divided into five groups: (1) Glycine substitutions (n=71), (2) splice-site and in-frame insertions-deletions (n=36), (3) variants leading to haplo-insufficiency (n=7), (4) non-glycine missense variants within the triple helix (n=4 variants), and (5) non-glycine missense variants or in-frame insertions-deletions, in the N- or C-terminal part of the protein (n=8). Overall, our cohort confirmed the severity of the disease with a median age at first complication of 29 years (IQR 22-39), the most frequent being arterial (48%) and digestive (24%) ruptures. Groups 2 and 1 were significantly more severe than groups 3-5, with extreme median ages at first major complication of 23-47 years. Patients of groups 3-5 had a less typical phenotype and remarkably absence of digestive events. The distribution of glycine-replacing amino acids was strongly biased towards more destabilizing residues of the collagen assembly. Thus the natural course of vEDS and the clinical phenotype of patients are influenced by the type of COL3A1 variant. This study also confirms that patients with variants located in the C- and N-termini or leading to haplo-insufficiency have milder course of the disease and less prevalent diagnostic criteria. These findings may help refine diagnostic strategy, genetic counselling and clinical care.

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  1. De Paepe A, Devereux RB, Dietz HC, Hennekam RC, Pyeritz RE: Revised diagnostic criteria for the Marfan syndrome. Am J Med Genet 1996; 62: 417-426.

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Authors
Frank, M., Albuisson, J., Ranque, B., Golmard, L., Mazzella, J.-M., Bal-Theoleyre, L., Fauret, A.-L., Mirault, T., Denarié, N., Mousseaux, E., Boutouyrie, P., Fiessinger, J.-N., Emmerich, J., Messas, E., & Jeunemaitre, X.
Affiliations
  • Inserm (FR)
  • Sorbonne Paris Cité (FR)
  • Hôpital de la Timone (FR)
  • Assistance Publique – Hôpitaux de Paris (FR)
Venue
European Journal of Human Genetics
Published
2015-03-11
Volume
23
Issue
12
Pages
1657-1664
ISSN
  • 1018-4813 (ISSN-L)
  • 1476-5438
OpenAlex
W2030840013
Cited by
248
References
20
Citations by year
2026: 19 · 2025: 30 · 2024: 27 · 2023: 31 · 2022: 32 · 2021: 23 · 2020: 17 · 2019: 22 · 2018: 19 · 2017: 16 · 2016: 8 · 2015: 4
FWCI
10.71
Type
journal article
Language
en
Open access
Locations
  • European Journal of Human Genetics (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Agence Nationale de la Recherche (ANR-10-BLAN-1129)
  • Institut National de la Santé et de la Recherche Médicale
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Connective tissue disorders research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Dermatological and Skeletal Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
Keywords
vascular Ehlers-Danlos syndrome, COL3A1, type III collagen, disease severity, glycine substitution, splice site mutation, haploinsufficiency, missense mutations, triple helix, arterial rupture, genotype-phenotype correlation, genetic counseling
MeSH terms
Adult, Ehlers-Danlos Syndrome, Female, Humans, Male, Middle Aged, Phenotype, Gene Deletion, Mutation, Missense, Collagen Type III

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