In our study, even though patients with NS-CAD and S-CAD presented lower LDL/ApoB ratios when compared to N-CAD (1.18 ± 0.23 vs. 1.25 ± 0.25 vs. 1.41 ± 0.45), the correlation between this biomarker and the Gensini score was very weak and failed to reach statistical significance (r = −0.073, p = 0.440). This evidence concerns the gene APOB and coronary artery disorder.