TIMER and GEPIA databases were applied to study the association among ITGAL and different biomarkers of TILs (CD8+/CD4+ T cells, NK cells, B cells, monocytes, DCs, TAMs, M1macrophages, M2 macrophages, neutrophils, T cells, and related subtypes) in STAD. The gene discussed is CD8A; the disease is gastric adenocarcinoma.