DNMT3B and cervical squamous cell carcinoma: There were positive correlations between P4HA1 expression and the expression of four DNA methyltransferases (DNMT1, DNMT2, DNMT3A, and DNMT3B) in ACC, CESC, chromophobe RCC, papillary RCC, LGG, PRAD, READ, SKCM, TGCT, THCA, UCEC, and UVM (Supplementary Figure S8).