CD8A and colorectal cancer: In colorectal cancer samples, the infiltration of CD8 T cells was lower than that in normal samples [Figure 1B–D, one‐sided Wilcoxon rank‐sum test, COAD (TCGA), CD8 T cells p = 0.00052; READ (TCGA), CD8 T‐cells abundance p = 0.11; COAD READ (TCGA), CD8 T‐cells abundance p = 0.00022].