This is because the average age at the time of the diagnosis of the cancer caused by a BRCA1 gene mutation is about 10 years younger than in the case of a BRCA2 gene mutation, and it is even later that the diagnosis is established in the case of mutations in the genes responsible for hereditary ovarian cancer (RAD51C, RAD51D, BRIP1). Here, BRCA1 is linked to cancer.