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Impact of Obicetrapib on Major Adverse Cardiovascular Events in High-Risk Patients: A Pooled Analysis
Stephen J Nicholls1, Adam J Nelson1, Kausik K Ray2
1Victorian Heart Institute, Monash University, Clayton, Victoria, Australia.
Background:
The cholesteryl ester transfer protein inhibitor obicetrapib decreases levels of atherogenic lipids and raises high-density lipoprotein cholesterol (HDL-C).
Objectives:
In this study, we sought to determine the effect of obicetrapib on cardiovascular events.
Methods:
The effects of 10 mg obicetrapib and placebo daily on major adverse cardiovascular event (MACE) rates were investigated in a pooled analysis of 354 patients with heterozygous familial hypercholesterolemia (HeFH) and 2,530 patients with atherosclerotic cardiovascular disease (ASCVD) over 365 days. The association between on-treatment lipids and MACE were also investigated.
Results:
The cohort (mean age 66 years, 36% female, ASCVD 82%, HeFH 27%, diabetes 35%) had median baseline levels of low-density lipoprotein cholesterol (LDL-C) 92 mg/dL, HDL-C 48 mg/dL, apolipoprotein B (ApoB) 88 mg/dL, non-HDL-C 116 mg/dL, and lipoprotein(a) (Lp(a)) 40.5 nmol/L. Obicetrapib produced greater reductions in LDL-C (-34.0 vs -4.0 mg/dL, -37.8% vs -4.6%), ApoB (-19.0 vs -3.0 mg/dL, -21.7% vs -3.6%), non-HDL-C (-36.0 vs -4.0 mg/dL, -32.4% vs -3.7%), and Lp(a) (-9.8 vs 0 nmol/L, -32.5% vs 0%) and increased HDL-C (+68.0 vs +1.0 mg/dL, +140.0% vs +1.5%). The rate of coronary heart disease death, myocardial infarction, ischemic stroke, or coronary revascularization was lower with obicetrapib (3.9% vs 5.0%; HR: 0.77; 95% CI: 0.54-1.11; P = 0.16), with a risk reduction in the second 6 months (HR: 0.60; 95% CI: 0.37-0.99; P = 0.04). The rate of coronary heart disease death, myocardial infarction, or coronary revascularization was lower with obicetrapib (3.2% vs 4.7%; HR: 0.68; 95% CI: 0.46-1.00; P = 0.048), with a risk reduction in the second 6 months (HR: 0.45; 95% CI: 0.26-0.77; P = 0.003). Achieved levels of LDL-C (P = 0.003), ApoB (P = 0.007), non-HDL-C (P = 0.01), Lp(a) (P = 0.003), and HDL-C (P = 0.0001) were associated with event rates.
Conclusions:
Obicetrapib treatment associated with a reduction in coronary events, evident beyond 6 months of treatment.
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