LEP and type 2 diabetes mellitus: In our cohort, serum leptin levels also correlated significantly with BMI (r = 0.5887, ***P < 0.0001, spearman analysis), FBG (r = 0.2862, *P = 0.0439, spearman analysis) (n = 50, as T2D group was excluded concerning BMI and FBG as mentioned above) and hsCRP (r = 0.2912, *P = 0.0088, spearman analysis).