Breast Cancer Genetic Test May Help Women Forgo Chemotherapy

Carrying out a commercially available 21-gene test on patients' breast tumors could allow more than two thirds of women with the most common type of early breast cancer to avoid chemotherapy, according to data from a landmark study published yesterday. Results from the prospective study, called Trial Assigning Individualized Options for Treatment (TAILORx), showed that for women whose tumors are hormone-receptor–positive, human epidermal growth factor receptor 2 (HER2)–negative, axil