Furthermore, no statistically significant difference in visfatin mRNA expression levels was demonstrated in PBMMs in the participants with and without PCOS (0.061±0.065 vs. 0.075±0.046; P=0.609), or with and without IR (0.053±0.043 vs. 0.083±0.064; P=0.064). This evidence concerns the gene NAMPT and polycystic ovary syndrome.