BRCA2 hereditary breast and ovarian cancer syndrome

BRCA2 hereditary breast and ovarian cancer syndrome ( BRCA2 HBOC) is an inherited condition that is characterized by an increased risk for a variety of different cancers. Women with this condition have a 49-55% risk of developing breast cancer, a 16-18% risk of developing ovarian cancer and a 62% risk of developing contralateral breast cancer by age 70. Men have a 6% lifetime risk of breast cancer and an increased risk for prostate cancer. Both men and women with BRCA2 HBOC have an elevated risk for pancreatic cancer. BRCA2 HBOC may also be associated with cancers of the stomach, gallbladder, bile duct, esophagus, stomach, fallopian tube, primary peritoneum, and skin; however, these risks are not well defined. This condition is caused by changes (mutations) in the BRCA2 gene and is inherited in an autosomal dominant manner. Management may include high risk cancer screening, chemopreventation and/or prophylactic surgeries.