“The five-year survival rate for patients diagnosed with metastatic gastric cancer is estimated to be only six percent, and eighty percent of patients with locally advanced unresectable or metastatic gastric or gastroesophageal junction adenocarcinoma have HER2-negative disease,” said Dr. Scot Ebbinghaus, vice president, global clinical development, Merck Research Laboratories. “We are committed to working closely with the FDA to bring KEYTRUDA to more patients with gastric and gastroesophageal junction cancer who are in need of additional treatment options that may help them live longer.”