Dr. Walid Gellad is an associate professor of medicine and health policy and codirector of the Center for Pharmaceutical Policy and Prescribing at the University of Pittsburgh. Stephen Morrissey, the interviewer, is the Managing Editor of the Journal. W.F. Gellad and A.S. Kesselheim. Accelerated Approval and Expensive Drugs - A Challenging Combination. N Engl J Med 2017;