We assessed the immune cell infiltration in the high- and hypo-risk categories using different platforms, and showed that cancer-associated fibroblasts, M0 macrophages, M1 macrophages, monocytes, NK cells, CD4+ memory activated T cells, CD8+ T cells, and regulatory T cells (Tregs) were infiltrated to a higher extent in the high-risk than in the hypo-risk category, while M2 macrophages, B cells, neutrophils, and mast cells were infiltrated to a higher extent in the hypo-risk than in the hyper-risk category. The gene discussed is CD8A; the disease is cancer.