Patients with BRCA1 mutations were enriched for a family history of breast (5/23 (21.7%)) and ovarian cancers (2/23 (8.7%)), whereas patient cases with BRCA2 mutations were enriched for a family history of breast (7/17 (41.2%)) but none of the family members had ovarian cancers. This evidence concerns the gene BRCA1 and ovarian cancer.