SAN ANTONIO (EGMN) - The 70-gene profile known as the MammaPrint test is a powerful and independent prognostic marker in breast cancer patients having one to three positive axillary lymph nodes, according to two studies presented at the annual San Antonio Breast Cancer Symposium."It can improve the current clinicopathologic risk assessment and can identify a substantial proportion of patients with an excellent survival. In fact, 41% may safely be spared chemotherapy," concluded Dr. Stella Mook of...