We evaluated the correlation of PD-L1 and Th1, TH17, Th2, Treg, B cells, macrophages, NK cells and MDSCs in gastric adenocarcinoma (STAD), and found that PD-L1 was most positively correlated with MDSCs in STAD (R = 0.588, p < 0.0001) (Figure 4F). The gene discussed is CD274; the disease is gastric adenocarcinoma.