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. 2021 Nov 7;42(42):4324-4332.
doi: 10.1093/eurheartj/ehab432.

Remnant cholesterol predicts cardiovascular disease beyond LDL and ApoB: a primary prevention study

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Remnant cholesterol predicts cardiovascular disease beyond LDL and ApoB: a primary prevention study

Renato Quispe et al. Eur Heart J. .

Abstract

Aims: Emerging evidence suggests that remnant cholesterol (RC) promotes atherosclerotic cardiovascular disease (ASCVD). We aimed to estimate RC-related risk beyond low-density lipoprotein cholesterol (LDL-C) and apolipoprotein B (apoB) in patients without known ASCVD.

Methods and results: We pooled data from 17 532 ASCVD-free individuals from the Atherosclerosis Risk in Communities study (n = 9748), the Multi-Ethnic Study of Atherosclerosis (n = 3049), and the Coronary Artery Risk Development in Young Adults (n = 4735). RC was calculated as non-high-density lipoprotein cholesterol (non-HDL-C) minus calculated LDL-C. Adjusted Cox models were used to estimate the risk for incident ASCVD associated with log RC levels. We also performed discordance analyses examining relative ASCVD risk in RC vs. LDL-C discordant/concordant groups using difference in percentile units (>10 units) and clinically relevant LDL-C targets. The mean age of participants was 52.3 ± 17.9 years, 56.7% were women and 34% black. There were 2143 ASCVD events over the median follow-up of 18.7 years. After multivariable adjustment including LDL-C and apoB, log RC was associated with higher ASCVD risk [hazard ratio (HR) 1.65, 95% confidence interval (CI) 1.45-1.89]. Moreover, the discordant high RC/low LDL-C group, but not the low RC/high LDL-C group, was associated with increased ASCVD risk compared to the concordant group (HR 1.21, 95% CI 1.08-1.34). Similar results were shown when examining discordance across clinical cutpoints.

Conclusions: In ASCVD-free individuals, elevated RC levels were associated with ASCVD independent of traditional risk factors, LDL-C, and apoB levels. The mechanisms of RC association with ASCVD, surprisingly beyond apoB, and the potential value of targeted RC-lowering in primary prevention need to be further investigated.

Keywords: Apolipoprotein B; LDL-cholesterol; Primary prevention; Remnant cholesterol.

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Figures

None
Graphical abstract
Figure 1
Figure 1
Proportions of discordance among individuals with LDL-C below clinical cutpoints.

Comment in

  • Keeping remnants in perspective.
    Borén J, Packard CJ. Borén J, et al. Eur Heart J. 2021 Nov 7;42(42):4333-4335. doi: 10.1093/eurheartj/ehab531. Eur Heart J. 2021. PMID: 34352097 No abstract available.

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