DNMT1 and colorectal carcinoma: As Figure 2 shows, DNMT1 expression in CRC tissues (2.01 ± 0.82) is statistically higher than the non-tumor mucosa (1.02 ± 0.52) (P < 0.001), as well as methylated (2.91 ± 0.95) than non-methylated samples (1.07 ± 0.44) (P < 0.001).