BRCA1/2 germline variants were also observed in patients with other more atypical cancer types such as salivary adenoid cystic carcinoma, bile duct cancer, endometrial cancer, mesothelioma, esophageal cancer and urothelial cancer, however, without a clear loss of the wild-type allele in the tumor sample (Supplementary Table 4). Here, BRCA1 is linked to bile duct cancer.