The development during the past decade of multiple molecular classifications for stomach cancer (specifically, The Cancer Genome Atlas [TCGA] and Asian Cancer Research Group) has identified multiple biomolecular prognostic and predictive markers, such as PD-L1 expression, microsatellite instability (MSI), tumor mutational burden, and Epstein–Barr virus (EBV) status [50]: the anatomopathologic report, particularly in metastatic setting, might contain this information. Here, CD274 is linked to gastric cancer.