In addition, we found obvious correlations among the expression levels of FAM83C/D/G/H and the infiltration of six different immune cells (B cells, CD8+ T cells, CD4+ T cells, macrophages and myeloid DCs) and discovered that CD4+ T cells and macrophages might be poor prognostic factors for STAD, while NK and B cells might be favorable prognostic factors. This evidence concerns the gene CD8A and gastric adenocarcinoma.