Intensive LDL Cholesterol Targeting in Atherosclerotic Cardiovascular Disease
Abstract
BACKGROUND
Despite guideline recommendations, evidence from randomized trials evaluating the appropriate low-density lipoprotein (LDL) cholesterol target for secondary prevention in patients with atherosclerotic cardiovascular disease remains limited.
METHODS
In this open-label superiority trial conducted in South Korea, we randomly assigned patients with atherosclerotic cardiovascular disease in a 1:1 ratio to a target LDL cholesterol level of less than 55 mg per deciliter (1.4 mmol per liter) (intensive-targeting group) or less than 70 mg per deciliter (1.8 mmol per liter) (conventional-targeting group). The primary end point was a composite of death from cardiovascular causes, nonfatal myocardial infarction, nonfatal stroke, any revascularization, or hospitalization for unstable angina at 3 years. Safety was also assessed.
RESULTS
Of 3048 patients who underwent randomization, 1526 were assigned to the intensive-targeting group and 1522 to the conventional-targeting group. The median follow-up was 3.0 years. The median LDL cholesterol level during the trial was 56 mg per deciliter (1.4 mmol per liter) in the intensive-targeting group and 66 mg per deciliter (1.7 mmol per liter) in the conventional-targeting group. A primary end-point event occurred in 100 patients (Kaplan-Meier estimate of cumulative incidence, 6.6%) in the intensive-targeting group and in 147 patients (Kaplan-Meier estimate of cumulative incidence, 9.7%) in the conventional-targeting group (hazard ratio,…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 3,048 participants or records.
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