Fig. 3

Methylation status of CpG sites in/near the PM20D1 promoter. a Mean and standard deviation values of 10 CpG sites in Mongolians and crop-farming East Asians (CEAs) are shown. The positions of the 5′untranslated region (UTR), 1st exon, and 1st intron of the PM20D1 are indicated. Position of cg17178900 is shown with an arrow. *P < 0.001 in the linear model. b Methylation levels of cg17178900 in different groups are shown. The Mongolian and Thai populations were further grouped according to the genotype of mQTL SNP of cg17178900. Cyan, orange, and gray boxes indicate the methylation level of A/G heterozygotes, G/G homozygotes, and unknown genotype, respectively. *P < 0.05, Tukey’s test