In 2020, during the course of our investigation, Høberg-Vetti et al. reported the identification of BRCA1 c.5407-25T>A in BC (n = 12) and OC (n = 8) cases, which also included a case of peritoneal carcinomatosis, in 20 cancer families with BRCA1 Manchester scores ranging from 3 to 30 [54]. Here, BRCA1 is linked to cancer.