Age (r = 0.246; p = 0.012), waist circumference (r = 0.415; p < 0.001), logarithmically transformed Cre (log-Cre, r = 0.227; p = 0.020) and log-hs-CRP (r = 0.269; p = 0.006) positively correlated while eGFR (r = −0.251; p = 0.010) negatively correlated with serum resistin levels in patients with CAD. This evidence concerns the gene RETN and coronary artery disorder.