BRCA

BRCA genes
Approximately 35% to 45% of families with early-onset autosomal dominant breast cancer have a mutation in BRCA1 (chromosome 17) and/or BRCA2 (chromosome 13) genes. BRCA genes are tumor suppressor genes. BRAC1 and 2 are also associated with an increased risk of other cancers, women have an increased risk of develping ovarian cancer and males an increased risk of prostate cancer.