PALB2 (Partner and localizer of BRCA2) variants and mutations

PALB2 (also known as Partner and localizer of BRCA2) is a human protein-coding gene encoding a partner and localizer of BRCA2 protein. It physically links BRCA1 and BRCA2 and helps recruit BRCA2-RAD51 repair machinery to DNA double-strand breaks. Heterozygous loss-of-function variants substantially increase breast and pancreatic cancer risk, while biallelic variants cause Fanconi anemia subtype N. This analysis covers 5,727 PALB2 variants and mutations. Of these, 9.6% have pathogenic or likely pathogenic clinical classifications, 58% have computational variant effect predictions from MutPred, and 27% have population-specific frequency data. Disease context includes Hereditary breast cancer, familial pancreatic carcinoma, and hereditary breast carcinoma. Example PALB2 variants include M1I, M1K, and M1L.

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 PALB2 variants

Examples include M1I, M1K, M1L, M1R, M1T, M1V, D2A, D2E. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.