There is a strong association observed between the ACE2 rs4240157 ACE2-(CT+CC) genotype in the dominant inheritance model with an OR of 6.09, (95%) CI = (3.6030 to 10.3187), and p < 0.0001, whereas a strong association was observed between the ACE2 rs4240157 ACE2-(TT+CT) genotype in the recessive inheritance model, which leads to an increased CAD susceptibility with an OR = 7.78, (95%) CI (4.1757 to 14.4961), and p < 0.0001 (Table 7). The gene discussed is ACE2; the disease is coronary artery disorder.