In a study by Xia Li, it was found that IL-6, IL-8, hypercholesterolemia, diabetes mellitus, and high-sensitivity C-reactive protein (hs-CRP) were independent predictors of restenosis risk in CAD patients who underwent percutaneous coronary intervention with drug-eluting stents [33]. This evidence concerns the gene CXCL8 and Hypercholesterolemia.