Prof. Eric Van Cutsem, MD, PhD, Neil H. Segal, MD, PhD, and Manish A. Shah, MD, discuss immunotherapy in GI cancers in this CME activity titled "The Advent of Immunotherapy in Gastrointestinal Cancers: MasterClass and Practicum on Checkpoint Inhibition and Biomarkers in Colorectal and Gastric Tumors." For the full presentation, downloadable practice aids, monograph, complete CME information, and to apply for credit, please visit us at http://bit.ly/2M8PcMs. CME credit will be available until July 2, 2019.