Notably, only the ApoB/A1 was found to be significantly positively correlated with the severity of coronary artery stenosis in CAD patients (95% CI 0.103 to 0.181, p < 0.001), not in the group of non-CAD patients (95% CI −0.007 to 0.136, p = 0.079) (Table 7). This evidence concerns the gene APOB and coronary artery disorder.