ArticleBMJ open2026
PCSK9 inhibitoRs for Early Passivation of coRonary athEroSclerotic plaqueS in acute coronary syndromes (REPRESS): study protocol for a multicentre randomised controlled trial.
Article in BMJ open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It reports registered trial NCT06791031. Not yet cited in PubMed.
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PCSK9 inhibitoRs for Early Passivation of coRonary athEroSclerotic plaqueS in Acute Coronary Syndromes (REPRESS): Study Protocol for a Multicenter Randomized Controlled Trial
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10 authors.
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Abstract
introductionThe 'strike early and strike strong' lipid-lowering strategy emphasises rapid reduction of low-density lipoprotein cholesterol (LDL-C) in patients with acute coronary syndrome (ACS). Proprotein convertase subtilisin/kexin type 9 inhibitors (PCSK9i) are increasingly used alongside statins to achieve guideline-recommended LDL-C targets after ACS. However, despite substantial LDL-C reductions with early PCSK9i initiation, their effects on non-culprit coronary atherosclerotic plaques remain unclear. This study aims to assess the impact of early intensive LDL-C lowering with PCSK9i added to moderate-intensity statin therapy on optical coherence tomography (OCT)-derived plaque characteristics in non-culprit coronary lesions in patients with ACS. METHODS AND ANALYSIS: In this prospective, multicentre, open-label trial, 212 patients with ACS will be randomised 1:1 to an early intensified lipid-lowering strategy (PCSK9i added to moderate-intensity statin) or guideline-directed medical therapy for 6 months. Serial OCT imaging of non-culprit coronary arteries with 20-70% stenosis will be performed at baseline and 6 months. The primary endpoint is the absolute change in minimum fibrous cap thickness within a matched target arterial segment from baseline to 6 months. Secondary endpoints include changes in minimum lumen area, maximum lipid arc, presence of macrophage infiltration, LDL-C reduction and achievement of LDL-C targets. The primary endpoint will be analysed using analysis of covariance, adjusting for treatment group, baseline LDL-C stratification (≥1.8 vs <1.8 mmol/L), and baseline minimum FCT. Secondary continuous outcomes will be analysed similarly, while categorical outcomes will be compared using chi-square, Fisher's exact test or logistic regression, as appropriate. ETHICS AND DISSEMINATION: Ethics approval was granted by the Biomedical Research Ethics Committee of West China Hospital of Sichuan University (2024 Review No 1943). Results will be disseminated via peer-reviewed publications and presentations at academic conferences. TRIAL REGISTRATION NUMBER: NCT06791031.
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