Central South University - Department of Oncology, Memorial Sloan Kettering Cancer Center, MD Anderson Cancer Center - Department of Gastroenterology, Hepatology and Nutrition, Memorial Sloan Kettering Cancer Center - Gastroenterology, Hepatology & Nutrition Service, Memorial Sloan Kettering Cancer Center, University of Texas at Houston - Department of Biostatistics, Johns Hopkins University, National Cancer Institute - Division of Cancer Treatment and Diagnosis, University of Texas at Houston - Department of Melanoma Medical Oncology, Northwestern University - Department of Medicine, Gastroenterology and Hepatology, University of Texas at Houston - Department of Melanoma Medical Oncology, Centre Hospitalier Universitaire Vaudois - Service Immunologie Et Allergie, University of Texas at Houston - Department of Genitourinary Medical Oncology, MD Anderson Cancer Center - Department of Gastroenterology, Hepatology and Nutrition, Hebrew University of Jerusalem - Department of Developmental Biology and Cancer Research, Memorial Sloan Kettering Cancer Center - Ludwig Collaborative and Swim Across America Laboratory, University of Washington and MD Anderson Cancer Center - Department of Gastroenterology, Hepatology and Nutrition