COL1A1 (Collagen alpha-1(I) chain) variants and mutations

COL1A1 (also known as Collagen alpha-1(I) chain) is a human protein-coding gene encoding a collagen alpha-1(I) chain protein. The alpha-1 chain of type I collagen, the main fibrillar collagen in connective tissue, bone, and skin. Together with its partner chain, it forms strong extracellular fibers, and COL1A1 variants are associated with osteogenesis imperfecta and several Ehlers-Danlos syndromes. This analysis covers 2,483 COL1A1 variants and mutations. Of these, 95% have computational variant effect predictions. Disease context includes osteogenesis imperfecta type 2, osteogenesis imperfecta type 4, and osteogenesis imperfecta type 3. Example COL1A1 variants include M1I, M1L, and M1T.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, ClinGen, PharmGKB, MaveDB, LitVar.

Notable COL1A1 variants

Examples include M1I, M1L, M1T, M1V, F2L, S3I, S3R, F4S. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.