“Most gastric cancers go undetected until an advanced stage, at which point the five-year survival rate is just 6%, one of the lowest across cancer types,” said Dr. Sun Young Rha, director and professor of medical oncology in the Department of Internal Medicine, Songdang Institute for Cancer Research, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea. “The positive overall survival results observed in this study are very encouraging and demonstrate the potential of KEYTRUDA in combination with chemotherapy to extend the lives of patients with HER2-negative locally advanced unresectable or metastatic gastric or gastroesophageal junction adenocarcinoma.”