Furthermore, we explored the correlations between METTL7A differential expression and pan-cancer molecular subtypes from the TISIDB database and found that METTL7A was expressed differently in molecular subtypes of 7 cancer types, while METTL7A expression was significantly associated with different immune subtypes of 8 cancer types, and the expression of METTL7A in KIRC was significantly higher in immunologically quiet subgroups than in other immune subgroups, further confirming the association between METTL7A and different cancer species. This evidence concerns the gene TMT1A and cancer.