Women bearing an alteration in BRCA1 or BRCA2 develop during their lifespan a breast cancer in 50–80 % of cases and an ovarian cancer in 20–40 % of cases (carriers of BRCA1 mutation) or in 10–20 % of cases (carriers of BRCA2 mutation) [5]. This evidence concerns the gene BRCA2 and ovarian carcinoma.