NCE Naonaltitute forHealth and Care ExcellenceNICE贝guidanceNivolumab with platinum-and fluoropyrimidine-based chemotherapy foruntreated HER2-negativeadvanced gastric,gastro-oesophageal junction oroesophagealadenocarcinomaTechnology appraisal guidancePublished:11 January 2023www.nice.org.uk/guidance/ta857NICE 2023.All rights reserved.Subject to Notice of rights(https://www.nice.org.uk/terms-and-conditions#notice-of-rights).