BRCA1 (P38398) variants and mutations

BRCA1 (also known as P38398) is a human protein-coding gene encoding a breast cancer type 1 susceptibility protein. It coordinates DNA-damage signaling and homologous-recombination repair while helping protect stalled replication forks and chromosome integrity. Germline loss-of-function variants strongly predispose to breast and ovarian cancer and increase risk for several other malignancies. This analysis covers 9,768 BRCA1 variants and mutations. Of these, 43% have computational variant effect predictions. Disease context includes breast cancer, Hereditary breast and ovarian cancer syndrome, and Fanconi anemia, complementation group S. Example BRCA1 variants include M1?, D2A, and D2E.

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, MaveDB, LitVar.

Notable BRCA1 variants

Examples include M1?, D2A, D2E, D2G, D2H, D2N, D2V, D2Y. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.