Dr. Leon-Ferre is an Assistant Professor of Oncology and Associate Program Director of the Advanced Breast Medical Oncology Fellowship Program at Mayo Clinic, Rochester, MN. Clinically, he is focused on the management of patients with breast cancer and on therapeutic clinical trials, with special focus on triple-negative breast cancer. His research seeks to understand the complex interactions between the immune system and the breast cancer tumor microenvironment in tumor tissue and in peripheral blood, and leverage this understanding to identify predictive biomarkers and design clinical trials aimed at optimizing systemic therapy strategies.