The Brazilian-derived BRCA variation dataset consists of 255 BRCA PVs from 7,711 cancer patients, 136 (53.3%) in BRCA1 and 119 (46.6%) in BRCA2. We developed an open database named dbBRCA-Portuguese (https://genemutation.fhs.um.edu.mo/dbbrca-portuguese/) and an open database named dbBRCA-Brazilian (https://genemutation.fhs.um.edu.mo/dbbrca-brazilian) to host the BRCA variation data from Portuguese and Brazilian populations. Here, BRCA1 is linked to cancer.