Overview
A Multicenter, randomized trial comparing the efficacy and safety of intensive lipid-lowering therapy using a statin-ezetimibe combination without aspirin versus statin monotherapy with aspirin in asymptomatic patients with coronary artery calcification
Description
Coronary artery calcification is a well-established marker of subclinical atherosclerosis that effectively identifies high-risk individuals for cardiovascular events, even in asymptomatic patients. However, the optimal intensity of preventive interventions-particularly regarding the balance between efficacy and safety-remains unclear in asymptomatic patients with significant coronary calcification.
While aspirin has traditionally been used for the primary prevention of cardiovascular events, recent evidence suggests that its routine use in asymptomatic individuals may carry greater bleeding risks than cardiovascular benefits. In contrast, intensive lipid-lowering therapy with statins and ezetimibe has proven effective in reducing LDL-C levels and preventing cardiovascular events by slowing atherosclerotic progression and stabilizing plaques.
This study aims to evaluate whether intensive lipid-lowering therapy using a statin-ezetimibe combination (without aspirin) is non-inferior to statin monotherapy (with aspirin) in reducing cardiovascular events among patients with significant coronary artery calcification. By comparing these two strategies, we seek to establish whether more aggressive lipid management might obviate the need for aspirin in these intermediate- to high-risk yet asymptomatic patients.
Eligibility
Inclusion Criteria
1. Adults aged 19 years and older
2. Asymptomatic patients with significant coronary calcification (Agatston score ≥ 100) and no physiologically significant coronary artery disease (CAD)
* The coronary CT scan used to establish the CAC score must be performed within 3 years prior to randomization.
* The assessment of physiological significance must be performed within 6 months prior to randomization
3. Participants will be eligible for inclusion regardless of prior statin or anti-platelet agents use.
Exclusion Criteria
1. Major ASCVD events (clinically documented ASCVD)
If at least one of the following criteria is present via patient history, physical examination, or medical records at the time of screening, the patient is not eligible:
* Acute coronary syndrome (MI or unstable angina)
* Coronary revascularization (PCI, CABG) or other arterial revascularization
* Ischemic stroke (Not TIA)
* Symptomatic peripheral arterial disease (history of claudication with ABI \<0.90, or previous revascularization or amputation
2. Patients with physiologically significant CAD
* Moderate to severe CAD (diameter stenosis \>50%) on CCTA with positive strest test (thallium, treadmil, stress echocardiography)
* Moderate to severe CAD (diameter stenosis \>50%) on CAG with positive fractional flow reserve (FFR) \< 0.8
3. Patients with familial hypercholesterolemia.
4. Patients with low-density lipoproteins cholesterol (LDL-C) ≥ 190 mg/dL regardless taking a statin or not.
5. Continuation of PCSK9 inhibitor is required during the clinical trial
6. Patients with chronic kidney disease (\
