CD8A and colorectal carcinoma: We also validated the significant and positive association between the mRNA expression of SLAMF8 and CD8A in our RNA‐sequencing data of CRC with 20 tissue samples (Figure 3a and b, P = 0.005), but we only observed borderline significance (Figure 3c and d, P = 0.089) for this association in the RNA‐sequencing data of 19 GC tissue samples, probably because of the limited sample size.