A Phase 2 Trial Combining Pembrolizumab and Palliative Radiation Therapy in Gastroesophageal Cancer to Augment Abscopal Immune Responses oleh Joseph Chao, MD, Ting-Fang He, PhD, Massimo D'Apuzzo, MD, PhD, Yi-Jen Chen, MD, PhD, Paul Frankel, PhD, Michael Tajon, PhD, Helen Chen, MD, Shawn Solomon, BS, Samuel J. Klempner, MD, Marwan Fakih, MD, Peter Lee, MD