Optimal low-density lipoprotein cholesterol target level in Korean acute myocardial infarction patients (<70 mg/dL vs. <55 mg/dL): Based on Korea acute myocardial infarction registry-National Institute of Health

•Optimal target low density lipoprotein cholesterol level is not fully investigated in Korean acute myocardial infarction•Target low density lipoprotein cholesterol levels of <70 mg/dL and a ≥50% reduction from baseline levels was associated with better clinical outcomes in Korean acute myocardial infarction patients. However, reducing target levels of <55 mg/dL showed no additional clinical benefits.