one in eight females in the United States will develop breast cancer, according to the American Cancer Society. In 2019, doctors diagnosed an estimated 268,600 new cases of invasive breast cancer in females in the U.S., while around 41,760 individuals died from the disease.
Up to a fifth of breast cancers are a more aggressive form known as triple-negative breast cancer that is difficult to treat.
Unlike the majority of breast cancers, estrogen and progesterone do not fuel the growth of triple-negative tumors, so drugs, such as tamoxifen, that block these hormones are ineffective.