Early Aggressive Strategy for Treatment of Lipid-Lowering in Acute Ischemic Stroke Delivered With Endovascular Therapy for Large Artery Occlusion

As a prospective, multicenter, open-label, randomized controlled clinical study, EAST-LDL will enroll 652 patients with acute ischemic stroke with anterior circulation large vessel occlusion undergoing endovascular treatment from approximately 10 clinical sites in China. This study aims to evaluate the effects of functional outcome according to an ordinal analysis of the full range of scores on the mRS, safety of lipid-lowering therapy, LDL-C goal attainment rate, change in inflammatory markers, incidence of recurrent ischemic stroke events , incidence of symptomatic intracranial hemorrhage transformation within 48 hours, incidence of new-onset hemorrhagic stroke, and incidence of MACEs in patients between early intensive lipid-lowering therapy with PCSK9 inhibitor and guideline-recommended standard of care treatment.

Inclusion criteria

• Adults (age 18 years and older);
• Imaging diagnosis of acute ischemic stroke with anterior circulation large vessel occlusion (including: internal carotid artery, middle cerebral artery M1 and M2, anterior cerebral artery A1 and A2);
• Planned to undergo endovascular intervention within 24 hours of symptom onset (or last known well time) according to local guidelines;
• Provision of informed consent by the patient or his/her legally authorized representative (or by an appropriate agent according to local requirements).

Exclusion criteria

• ASPECTS score ≤5 on cranial CT imaging;
• Pre-existing functional impairment, with mRS score >2;
• Patients who are allergic to PCSK9 inhibitors;
• Patients who have received PCSK9 monoclonal antibody within 1 month prior to enrollment or PCSK9 siRNA therapy within 6 months prior to enrollment;
• Severe renal insufficiency, defined as estimated glomerular filtration rate (eGFR) < 15 mL/min/1.73m2 at final screening;
• Active liver disease or hepatic dysfunction, defined as aspartate aminotransferase (AST) or alanine aminotransferase (ALT) > 3 times the upper limit of normal;
• Severe, concomitant non-cardiovascular disease expected to reduce life expectancy to less than 3 months;
• Pregnant or lactating women;
• Patients who are participating in other clinical trials;
• Other conditions deemed unsuitable for inclusion in the clinical study by the investigator.