PCSK9 inhibitoRs for Early Passivation of coRonary athEroSclerotic plaqueS in Acute Coronary Syndromes (REPRESS)

In this prospective, multicenter, open-label trial, 212 ACS patients will be randomized 1:1 to either the "PCSK9i early" intensified therapy group (initial addition of PCSK9i to moderate-intensity statin) or the guideline-directed medical therapy group for 6 months. Serial OCT imaging of non-culprit arteries (20-70% stenosis) is performed at baseline and 6 months. The primary endpoint is the absolute change in minimum fibrous cap thickness at 6 months, and secondary endpoints including changes in lumen area, lipid arc, macrophage infiltration, LDL-C reduction, and target LDL-C achievement.