When compared with MMRp tumours, median intraepithelial (IE) CD3+ and cytotoxic CD8+ T‐cell densities were numerically greater in dMMR tumours in both CRC and EC, with LS tumours tending to have denser infiltrate, in keeping with previous reports [7, 8, 41] (Figure 2A,B). Here, CD8A is linked to colorectal carcinoma.