DNMT1 and acute myeloid leukemia: Interestingly, we found unexpectedly high expression of nine m5C regulators in the tumor group (NOP2, NSUN3, NSUN6, NSUN7, DNMT1, DNMT3A, TRDMT1, TET2, and TET3), indicating their essential role in AML pathogenesis (Figure 2A).