Physician-executive with 30+ years in drug development, translational research, and risk-benefit assessment. CMO of Pfizer from 2019 to 2021 and responsible for developing and obtaining emergency use authorization for its COVID-19 vaccine. Led Clinical Development for Oncology at Pfizer from 2008 to 2018. Prof. of Medicine at Vanderbilt University and Ingram Professor of Cancer Research from 1998