Antonio Llombart-Cussac, MD, Medical Oncologist and Chairman of the Medical Oncology Service at University Hospital Arnau de Vilanova in Valencia, Spain. He specializes in the treatment of breast cancer and coordinates a clinical unit integrated by pharmacologists, surgeons, pathologists, and biologists working with cytotoxic and molecular agents. His research focuses on translational clinical trials and correlative science in the management of ER-positive breast cancer.