FTO and diabetic kidney disease: We further performed a GWAS meta-analysis for diabetic nephropathy including patients with microalbuminuria as cases, and found that rs56094641 in FTO was significantly associated with diabetic nephropathy also in this analysis (P = 2.40 × 10−9, OR = 1.18, 95% CI 1.15−1.31, S5 and S6 Tables).