CD33 and neoplasm: Moreover, we found that the METTL3 level in tumour cells was positively correlated with TILs in the early (R = 0.049, P = 0.012) and advanced stage (R = 0.129, P = 0.002) (Additional file 1: Figure S1E and S1F), while we found that in the advanced stage, the number of CD33+ cells was positively correlated with the METTL3 level in TILs (R = 0.088, P = 0.013) (Additional file 1: Figure S1J).