Meanwhile, METTL7A was negatively correlated with MSI in COAD and positively correlated with MSI in READ.METTL7A was positively correlated with immune scores in 12 cancers, and negatively correlated with immune scores in BLCA, CESC, LIHC, KIRC, and THCA.METTL7A is highly expressed in immune cells and is involved in immune cell infiltration. The gene discussed is TMT1A; the disease is bladder transitional cell carcinoma.