Patients had a mean age of 56.7 years, 27% (n = 52) were premenopausal, 68% (n = 131) had a known family history of BRCA1/2-related cancer, 73% (n = 141) had HR+/HER2− disease, and 27% (n = 53) had TNBC. Here, BRCA1 is linked to cancer.