BRCA1 and cancer: Interestingly, BRCA1/2 alterations were more frequently germline (57.4%) and biallelic (89.9%) in the “classic” BRCA1/2‐associated cancers (i.e., breast, ovarian, pancreatic and prostate cancers) compared to other cancer types (37.2% and 43.6%, respectively), including small intestine cancer [25].