article_metadata: Fangyuan Zhang Jieying Zhang Lei Zhao Menglan Zhai Tao Zhang Dandan Yu
article_metadata: 10.3389/fimmu.2021.759250
article_metadata: Front Immunol
article_metadata: 2021 Dec 7;12:759250.
article_metadata: mss pd-l1 advanced gastric cancer immunotherapy lymph node metastasis pmmr
article_metadata: CC BY
article_metadata: https://pubmed.ncbi.nlm.nih.gov/34950137/
article_metadata: B7-H1 Antigen / immunology Stomach Neoplasms / immunology
article_metadata: B7-H1 Antigen / immunology Stomach Neoplasms / immunology Case Reports Research Support, Non-U.S. Gov't Adult B7-H1 Antigen / antagonists & inhibitors Humans Immune Checkpoint Inhibitors / therapeutic use Male Stomach Neoplasms / diagnosis Stomach Neoplasms / drug therapy B7-H1 Antigen CD274 protein, human Immune Checkpoint Inhibitors
article_metadata: PMC8688253
article_metadata: 34950137
article_metadata: A PD-L1 Negative Advanced Gastric Cancer Patient With a Long Response to PD-1 Blockade After Failure of Systematic Treatment: A Case Report
article_metadata: 2021