PNPLA2 and diabetic kidney disease: For SNP PNPLA2 rs1138714, the AG genotype in the additive model had 1.529-fold increased risk of DKD (adjusted OR = 1.529, 95% CI 1.118-2.091, P = 0.008), and the AG+GG genotype in the dominant model showed 1.531-fold increased risk of DKD (adjusted OR = 1.531, 95% CI 1.134-2.067, P = 0.005).