Higher CC genotype distributions were found in the stable angina and STEMI groups, suggesting an association between TCF21 gene polymorphisms with stable angina and STEMI (CC vs. GG: crude OR = 2.00, 95% CI = 1.26-3.21, p = 0.004 for stable angina; OR = 4.25, 95% CI = 2.14-9.00, p < 0.0001 for STEMI). The gene discussed is TCF21; the disease is angina pectoris.