LDLR and coronary stenosis: High levels of methylation were found in LDLR promoter region in patients with coronary stenosis ≥50% (1.47%± 0.20) and coronary stenosis <50% (1.3%± 0.15) compared to HS (p = 0.029 and p = 0.043, respectively) while no difference was found between CHD groups.