PPARG and diabetes mellitus: In PPARγ, the G allele in rs2920502 decreased the risk of diabetes (OR: 0.818, 95%CI: 0.526–0.969, P = 0.042), the T allele in rs3856806 increased the risk of diabetes (OR: 1.46, 95%CI: 1.055–2.017, P = 0.022) (Table 3).