We also observed a significant association between the MTHFR-CC and MTHFR-(CT+TT) genotypes in the dominant inheritance model that may be linked to a greater CAD susceptibility with an OR = 1.84, (95% CI) (1.0930 to 3.1257), and p < 0.021. The gene discussed is MTHFR; the disease is coronary artery disorder.