DNMT1 and coronary artery disorder: In a study by Chunyan Peng et al., conducted in a Chinese Han population, the DNMT-1 rs2228611 polymorphism was reported to be significantly associated with coronary artery disease (CAD), with the A allele showing a protective effect (OR = 0.404; 95% CI: 0.184–0.884; p = 0.023) [23].