CYP2R1 and type 2 diabetes mellitus: In the Chinese Han population (n = 794), the ‘G’ allele carriers of the CYP2R1 SNPs, rs10766197 and rs1993116, had 1.64 and 1.76 times increased risk of developing T2D compared with ‘AA’ homozygotes, respectively (P = .024 and P = .048, respectively) [27].