breast-ovarian cancer, familial, susceptibility to, 2 (Monarch Disease Ontology entry MONDO_0012933) is any hereditary breast ovarian cancer syndrome in which the cause of the disease is a mutation in the BRCA2 gene. Also known as: BRCA2 hereditary breast ovarian cancer syndrome, breast-ovarian cancer, familial, 2, breast-ovarian cancer, familial, susceptibility to, type 2, hereditary breast ovarian cancer syndrome caused by mutation in BRCA2.