BRCA Genetic Mutation Test Yields False Negatives For Breast Cancer Patients With Family History Of Breast, Ovarian Cancer, Study Says

... A commonly used genetic test to determine a person''s risk of breast cancer failed to identify the BRCA1 and BRCA2 genetic mutations -- thought to increase risk of the disease -- in about 12% of people who have been diagnosed with breast cancer, who have a family history of breast or ovarian cancer and who previously tested negative for the mutation, according to a study published in the March 22 issue of the Journal of the American Medical Association, the New York Times reports (Pollack, New York Times, 3/22)... click link for more info. ...