Early Intensive Lipid-Lowering With Inclisiran for Plaque Stabilization in Acute Coronary Syndrome
SEsiR-ACS
Statin, Ezetimibe, and Inclisiran for Plaque Regression in Acute Coronary Syndrome: A Randomized Controlled Trial (SEsiR-ACS Trial)
1 other identifier
interventional
294
1 country
1
Brief Summary
This multicenter, randomized, open-label clinical trial will evaluate whether an early intensive lipid-lowering strategy can improve coronary plaque stabilization in patients hospitalized with acute coronary syndrome. A total of 294 participants will be randomly assigned in a 1:1 ratio to either an early intensive treatment strategy with a high-intensity statin, ezetimibe, and inclisiran, or a guideline-based stepwise lipid-lowering strategy. Coronary plaque characteristics will be assessed using optical coherence tomography (OCT) at baseline and at 12 months. The primary outcome is the change in minimal fibrous cap thickness from baseline to 12 months. Additional assessments will include other OCT-based plaque characteristics, lipid levels, safety outcomes, and, in a subset of participants, intravascular ultrasound measurements of plaque burden.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_4
Started Sep 2026
Typical duration for phase_4
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
August 28, 2026
CompletedStudy Start
First participant enrolled
September 1, 2026
CompletedFirst Posted
Study publicly available on registry
September 2, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
September 1, 2029
ExpectedStudy Completion
Last participant's last visit for all outcomes
September 1, 2029
September 2, 2026
August 1, 2026
3 years
August 28, 2026
August 28, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Change in Minimal Fibrous Cap Thickness
Change from baseline to 12 months in minimal fibrous cap thickness (FCT), measured by optical coherence tomography (OCT) in one prespecified representative matched non-stented coronary plaque or segment per participant.
Baseline to 12 months
Secondary Outcomes (3)
Change in OCT-Derived Lipid Plaque Characteristics
Baseline to 12 months
Change in Lipid Parameters and LDL-C Target Attainment
Baseline to 12 months
Changes in IVUS-Derived Plaque Burden in the IVUS Substudy
Baseline to 12 months
Other Outcomes (1)
Exploratory Clinical Events
Up to 12 months
Study Arms (2)
Early Intensive Lipid-Lowering Strategy
EXPERIMENTALParticipants will receive an early intensive lipid-lowering strategy consisting of a high-intensity statin, ezetimibe 10 mg once daily, and inclisiran 284 mg by subcutaneous injection initiated during the index hospitalization or as early as feasible. Inclisiran will be repeated at 3 months and 9 months.
Guideline-Based Stepwise Intensification Strategy
ACTIVE COMPARATORParticipants will receive a guideline-based stepwise lipid-lowering strategy. High-intensity statin therapy will be initiated or continued during the index hospitalization. Ezetimibe will be added according to follow-up LDL-C levels, and a PCSK9 inhibitor may be considered if the LDL-C target remains unmet.
Interventions
Inclisiran sodium 284 mg/1.5 mL will be administered by subcutaneous injection in the early intensive lipid-lowering group. Inclisiran will be initiated during the index hospitalization or as early as feasible thereafter, within 2 weeks, followed by additional doses at 3 months (±2 weeks) and 9 months (±2 weeks).
High-intensity statin therapy will consist of atorvastatin 40-80 mg orally once daily or rosuvastatin 20 mg orally once daily, or the maximally tolerated dose. High-intensity statin therapy will be initiated or continued during the index hospitalization in both treatment groups.
Ezetimibe 10 mg will be administered orally once daily. In the early intensive lipid-lowering group, ezetimibe will be initiated during the index hospitalization. In the guideline-based stepwise intensification group, ezetimibe will be added according to follow-up LDL-C levels if the treatment target is not achieved with high-intensity statin therapy.
Eligibility Criteria
You may qualify if:
- Age 19 to 85 years.
- Hospitalization for acute coronary syndrome (UA, NSTEMI, or STEMI) with planned coronary angiography and PCI, or PCI already performed during the index hospitalization with adequate baseline OCT images obtained during the procedure that meets the study imaging analysis criteria.
- Presence of a target vessel/segment considered by the investigator to be suitable for OCT assessment at baseline and at the 12-month follow-up.
- LDL-C level at screening meeting one of the following criteria according to background lipid-lowering therapy:
- i) ≥40 mg/dL in patients receiving stable combination therapy with a statin and ezetimibe, defined as no dose change for at least 4 weeks before screening; ii) ≥55 mg/dL in patients receiving high-intensity statin therapy; iii) ≥70 mg/dL in patients receiving low- or moderate-intensity statin therapy; or iv) ≥100 mg/dL in patients not receiving stable statin therapy.
- Provision of voluntary written informed consent after receiving sufficient information regarding the study objectives, procedures, and follow-up plan.
You may not qualify if:
- Severe hepatic dysfunction, defined as AST or ALT \>3 times the upper limit of normal.
- CK \>5 times the upper limit of normal or suspected clinically significant myopathy.
- Severe renal impairment, defined as eGFR \<30 mL/min/1.73 m².
- Severe hypersensitivity to or contraindication to statins, ezetimibe, or inclisiran.
- Pregnancy, breastfeeding, or plans to become pregnant during the study period.
- Inability to undergo 12-month follow-up coronary angiography and OCT.
- Life expectancy \<1 year or, in the investigator's judgment, inappropriate participation in the study because of concerns regarding adherence or safety.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Seoul National University Bundang Hospitallead
- Dotter Co., Ltd.collaborator
- Novartis Korea Ltd.collaborator
- Hanmi Pharmaceutical co., ltd.collaborator
Study Sites (1)
Seoul National University Bundang Hospital
Seongnam-si, Gyeonggi-do, 13620, South Korea
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Masking Details
- Participants and investigators are aware of treatment-group assignment. However, OCT images are analyzed by an independent imaging core laboratory blinded to treatment allocation, and major clinical events are adjudicated by an independent Clinical Event Committee blinded to treatment assignment.
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Professor of Cardiology
Study Record Dates
First Submitted
August 28, 2026
First Posted
September 2, 2026
Study Start
September 1, 2026
Primary Completion (Estimated)
September 1, 2029
Study Completion (Estimated)
September 1, 2029
Last Updated
September 2, 2026
Record last verified: 2026-08
Data Sharing
- IPD Sharing
- Will not share