MEF2C and colorectal carcinoma: As expected, higher MEF2C-AS1 methylation levels of individual CpG sites and mean levels were observed in lesion tissues of NAA (Fig. 4a, all p < 0.05), AA (Fig. 4b, all p < 0.001), and CRC (Fig. 4c, all p < 0.001) as compared with adjacent normal tissues, respectively.