Kisho is an information platform, not a medical provider. Nothing on this site constitutes medical advice, diagnosis, or treatment recommendations. All content is aggregated from publicly available sources (including ClinicalTrials.gov, PubMed, FDA.gov, and Orphanet) and is provided for informational purposes only. Clinical trial eligibility, treatment decisions, and any health-related actions should always be discussed with a qualified healthcare professional. Kisho does not endorse any specific therapy, organization, or clinical trial. Terms of use · Privacy policy
Features include always present findings: Joint hypermobility and Hip dislocation; and rarely findings: Talipes equinovarus, Atrophic scars, and Bladder diverticulum. 20 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Bones and joints | 7 | Hyperextensibility of the finger joints, Sideways curvature of the spine (scoliosis), 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, arthrochalasia type, 2 is associated with 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.
Phenotype severity distribution: 2 always present features.
No clinical trials have been registered for Ehlers-Danlos syndrome, arthrochalasia type, 2.
1 publication has been identified in PubMed for Ehlers-Danlos syndrome, arthrochalasia type, 2. Research spans Case Report / Case Series (100%).
Brown M (2024). [PMID: 39343458](https://pubmed.ncbi.nlm.nih.gov/39343458/). *BMJ Case Rep*. [Case Report / Case Series]
Data assembled from 6 of 12 sources · Last updated Sep 20, 2026, 5:33 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about Ehlers-Danlos syndrome, arthrochalasia type, 2
Skin |
3 |
Fragile skin, Soft skin, Hyperextensible skin |
Muscles | 2 | Generalized hypotonia, Delayed gross motor development |
Arms and legs | 1 | Hyperextensibility of the finger joints |
Brain and nerves | 1 | Delayed gross motor development |
Age of onset: at birth.