16 immune cells showed significantly higher levels of infiltration in the low-risk subgroup than the high-risk subgroup in the TCGA cohort, while 13 immune cells, including activated dendritic cells (aDCs), B cells, CD8+ T cells, dendritic cells (DCs), induced DCs (iDCs), mast cells, neutrophils, natural killer (NK) cells, plasmacytoid DCs (pDCs), T helper (Th) cells, tumor-infiltrating lymphocytes (TILs) and regulatory T (Treg) cells, were in the GEO cohorts (p < 0.05) (Figure 8A, Figure 8C). This evidence concerns the gene CD8A and neoplasm.