Datasets of melanoma (N = 7,043 CD8 T cells), colorectal cancer (N = 6,856 CD8 T cells), non-small cell lung cancer (N = 6,380 cells), melanoma (N = 1,224 CD8 T cells), hepatocellular carcinoma (N = 687 CD8 T cells), head and neck squamous cell carcinoma (N = 635 CD8 T cells), and astrocytoma (N = 120 CD8 T cells) were analyzed. The gene discussed is CD8A; the disease is head and neck squamous cell carcinoma.