Multivariate forward stepwise linear regression analysis of the variables significantly associated with fasting serum resistin levels revealed that DM (β = 0.239; p = 0.006), age (β = 0.203; p = 0.019) and waist circumference (β = 0.384; p < 0.001) were independent predictors of resistin values in patients with CAD. The gene discussed is RETN; the disease is diabetes mellitus.