No two breast cancers are the same, and researchers have come a long way in understanding what makes each breast tumor unique. This is the entire premise behind personalized medicine. By looking at a tumor’s biomarkers, doctors can tailor their patient’s treatment to best fight their unique tumor. On today’s show, we’ll be discussing biomarkers that doctors look for in breast tumors and how they use them to design a treatment plan. We’ll also hear about a new twist on an old biomarker, the estrogen receptor, and how it’s being put into clinical practice. Joining us today to share her expertise is Dr. Virginia Kaklamani, M.D. Dr. Kaklamani is a professor of medicine and leader of the Breast Cancer Program at UT Health San Antonio MD Anderson Cancer Center.