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Pemafibrate for Symptomatic ICAS RCT
Sponsor: Tokyo Women's Medical University
Summary
The goal of this clinical trial is to learn whether pemafibrate can help prevent worsening of intracranial arterial stenosis (ICAS) in patients who have symptomatic ICAS and high triglycerides (TG) levels after ischemic stroke or transient ischemic attack (TIA). The main questions this study aims to answer are: 1. Does pemafibrate lower the chance that ICAS gets worse over 12 months? 2. Does pemafibrate improve TG levels and other vascular risk markers? 3. What are the effects of pemafibrate on vascular events, functional outcomes, and safety over 12 months? Researchers will compare a pemafibrate group with a non-pemafibrate group to see whether pemafibrate helps prevent progression of ICAS. This is an open-label, randomized, parallel-group trial. That means participants are assigned by chance to 1 of 2 groups, and both the researchers and participants know which group was assigned. Participants in both groups will continue to receive standard stroke care, including antithrombotic therapy and management of vascular risk factors such as blood pressure, low-density lipoprotein cholesterol, diabetes, and smoking. Participants may be eligible if they are 18 years or older, have clinically stable ischemic stroke or TIA, have 50% to 99% stenosis in a symptomatic intracranial artery on contrast-enhanced CT angiography (CTA), and have elevated fasting (\>=150 mg/dL) or non-fasting (\>=175 mg/dL) TG levels. Some people will not be eligible, such as those with ICAS due to non-atherosclerotic arterial disease, severe extracranial carotid stenosis, recent intravenous thrombolysis or mechanical thrombectomy, planned revascularization, contraindications to pemafibrate or iodinated contrast media, dialysis, or pregnancy. Participants will: * Be randomly assigned to a pemafibrate group or a non-pemafibrate group * Take pemafibrate for 12 months if assigned to the pemafibrate group, with possible dose adjustment based on TG levels and kidney function * Have blood tests and clinical assessments at baseline and during follow-up * Undergo brain CTA at study entry and again at 12 months * Undergo brain MRI/MRA and vascular tests such as ankle brachial index, cardio ankle vascular index, and pulse wave velocity according to the study schedule * Be followed for vascular events, functional outcome, and adverse events for 1 year
Official title: Triglyceride-lowering Therapy With Pemafibrate for Prevention of Atherosclerotic Cardiovascular Disease in Patients With Symptomatic Intracranial Artery Stenosis: a Multi-center, Open-label, Randomized Controlled Trial (PPAR-ICAS)
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
270
Start Date
2026-05-26
Completion Date
2028-12-31
Last Updated
2026-06-16
Healthy Volunteers
No
Interventions
Pemafibrate
Participants in this arm will receive pemafibrate in addition to standard medical therapy.
Locations (19)
Iwate Medical University Hospital
Hizume, Iwate, Japan
Kagoshima Medical Center
Kagoshima, Kagoshima-ken, Japan
Kumamoto University Hospital
Kumamoto, Kumamoto, Japan
Japanese Red Cross Kyoto Daini Hospital
Kyoto, Kyoto, Japan
University Hospital Kyoto Prefectural University of Medicine
Kyoto, Kyoto, Japan
Nagasaki University Hospital
Nagasaki, Nagasaki, Japan
Kawasaki Medical School Hospital
Kurashiki, Okayama-ken, Japan
Kansai Medical University Hospital
Hirakata, Osaka, Japan
Osaka National Hospital
Osaka, Osaka, Japan
Osaka General Medical Center
Osaka, Osaka, Japan
Saitama Medical University International Medical Center
Hidaka, Saitama, Japan
Japanese Red Cross Saitama Hospital
Saitama, Saitama, Japan
Dokkyo Medical University Hospital
Mibu, Tochigi, Japan
Jichi Medical University Hospital
Shimotsuke, Tochigi, Japan
Showa General Hospital
Kodaira, Tokyo, Japan
Kyorin University Hospital
Mitaka, Tokyo, Japan
Tokyo Medical University Hospital
Shinjuku-Ku, Tokyo, Japan
Tokyo Women's Medical University Hospital
Shinjuku-Ku, Tokyo, Japan
University of Yamanashi Hospital
Chūō, Yamanashi, Japan