The plasma visfatin levels did not correlate with BMI, WHR, T, LH/FSH, FINS and blood lipid levels, although positive correlation with HOMA-IR was exhibited in the control IR patients (r=0.717; P=0.03) and negative correlation was exhibited with FPG in the PCOS non-IR patients (r=−0.641; P=0.046). This evidence concerns the gene NAMPT and polycystic ovary syndrome.