Triple Negative Breast Cancer Awareness Day
A diagnosis of triple-negative breast cancer (TNBC) means that discovered cancer cells have none of the typically tested for estrogen receptors, HER 2 proteins or progesterone receptors on their cell surface. Accounting for about 15% of all breast cancers, women in the TNBC category tend to be younger than age 40, black, or who have the BRCA1 genetic mutation.