What is BRCA (the "BReast CAncer gene") and how does it affect your risk of developing breast cancer?.
contralateral breast cancer for BRCA1 and BRCA2 mutation.
The BRCA gene test is a blood test that uses DNA analysis to identify harmful changes (mutations) in either one of the two breast cancer.
BRCA1 and BRCA2 (BReast CAncer genes 1 and 2) are the best-known genes linked to breast cancer risk. This section provides information on BRCA1/2 gene .