We then analyzed 22 immune cell subsets in tumor immunity using the CIBERSORT method and found that B cells naive, B cells memory, plasma cells, T cells CD8, T cells follicular helper, and macrophages M2 in TM4SF18 were statistically significant (P < 0.05, Fig. 7Q) between the TM4SF18 high‐ and low‐expression groups. Here, CD8A is linked to neoplasm.