BRCA1 and triple-negative breast carcinoma: Secondly, this may be substantiated by specific histological findings in available tumors, such as triple negative breast cancers (BRCA1-associated), high grade papillary serous ovarian cancer (BRCA1- and 2-associated), endometrioid cancer of the uterus (MMR-gene-associated) and microsatellite instability (MMR-gene-associated).