We demonstrated that the serum resistinconcentration differed between CAD patients and the control group, but thisdifference was not significant, confirming results of previous studies.18,25 Several studies have reported serum resistin levels to besignificantly elevated in CAD patients.4,19,26,27 Incontrast, other studies16,28 found no such correlation. This evidence concerns the gene RETN and coronary artery disorder.