In another study, where CAD patients were divided into four groups according to the severity of coronary artery stenosis, four plasma ceramide species (Cer (d18:1/16:0), Cer (d18:1/18:0), Cer (d18:1/24:1), Cer (d18:1/24:0)) were analyzed. This evidence concerns the gene CBLN1 and coronary artery disorder.