Mutations in the BRCA1 and BRCA2 genes are inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to increase a person's chance of developing cancer. Although breast cancer is more common in women than in men, the mutated gene can be inherited from either the mother or the father. But, not all breast cancers are inherited. These cancers are acquired during a person's lifetime, and they do not cluster in families.
In all cases, you should discuss the results and any appropriate follow-up with your referring clinician.