Abstract
This editorial discusses the article written by Chen et al that was published in the latest edition of the World Journal of Gastrointestinal Surgery . The current study found that programmed cell death 1 ligand 1 (PD-L1) expression is considered as one of the pan-cancer biomarkers of immune checkpoint inhibitors (ICIs) treatment response. Four molecular subtypes are widely used to guide and evaluate the prognosis and diagnosis and treatment of gastric cancer (GC) patients. Clinical trials of ICI treatment including Nivolumab, Pembrolizumab, Avelumab have been conducted for metastatic GC (mGC). The effects of various single agent ICIs on mGC therapy varied. ICIs combined with chemotherapy can indeed bring survival benefits to patients with mGC. Combining ICIs with chemotherapy can give more patients the chance of surgery in the treatment of GC transformation. However, not all PD-L1 positive patients can benefit from it. It is urgent to find better biomarkers to predict the response of ICIs for more precise clinical treatment.
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