Dr. Susan Ellenberg is Professor of Biostatistics, Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine at the University of Pennsylvania. Prior to her appointment at Penn, Dr. Ellenberg held positions of increasing responsibility in the federal government, at the NIH and the FDA. Dr. Ellenberg is a Fellow of the American Statistical Association, the Society for Clinical Trials and the American Association for the Advancement of Science. She is the lead author of the award-winning book, Data Monitoring Committees in Clinical Trials: A Practical Perspective, co-authored with Drs. Thomas Fleming and David DeMets (second edition 2019),