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A form of Ehlers-Danlos syndrome characterized by soft skin, skin hyperextensibility, easy bruisability, atrophic scar formation, joint hypermobility and cardiac valvular defects comprising mitral and/or aortic valve insufficiency.
Data assembled from 7 of 12 sources · Last updated Sep 19, 2026, 1:14 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about Ehlers-Danlos syndrome, cardiac valvular type
Features include: Inguinal hernia, Joint hypermobility, Atrophic scars, and Calcaneovalgus deformity and 10 more.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Skin | 3 | Soft skin, Thin skin, Hyperextensible skin |
Heart and blood vessels | 3 | Aortic regurgitation, Mitral regurgitation, Mitral valve prolapse |
Bones and joints | 1 | Joint hypermobility |
COL1A2 encodes collagen type I alpha 2 chain (1,366 aa). Type I collagen is a member of group I collagen (fibrillar forming collagen) Highest expression in Cells Cultured fibroblasts (4,674 TPM) and Artery Aorta (1,191 TPM).
Ehlers-Danlos syndrome, cardiac valvular type is caused by mutations in the COL1A2 gene on chromosome 7.
COL1A2 is classified as a druggable target (Druggable Genome category) with score 5.8.
Genetic testing for COL1A2 is available. Testing is considered confirmatory for diagnosis.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for Ehlers-Danlos syndrome, cardiac valvular type.
3 publications have been identified in PubMed for Ehlers-Danlos syndrome, cardiac valvular type. Research spans Review / Meta-Analysis (33%), Case Report / Case Series (33%), and Basic Science / Preclinical (33%).
Doğan Arı AB (2026). [PMID: 41937885](https://pubmed.ncbi.nlm.nih.gov/41937885/). *Mol Syndromol*. [Basic Science / Preclinical]
Nunez-Ordonez N (2025). [PMID: 40066355](https://pubmed.ncbi.nlm.nih.gov/40066355/). *Front Cardiovasc Med*. [Case Report / Case Series]
Galante N (2024). [PMID: 39008115](https://pubmed.ncbi.nlm.nih.gov/39008115/). *Int J Legal Med*. [Review / Meta-Analysis]