He serves as Disease Center Leader for Radiation Oncology, Center for Neuro-Oncology, at Dana-Farber/Brigham and Women's Cancer Center. Alexander's research interests include innovations in preclinical and clinical evidence generation and analysis to support therapeutic and biomarker development and clinical trial innovations, including platform trials. He previously served as a White House Fellow and is a graduate of the University of Michigan Medical School and the Harvard School of Public Health.