Efficacy and Safety of Interleukin-6 Receptor Inhibitor Combined With Endovascular Treatment in Patients With Acute Anterior Circulation Large Vessel Occlusion Stroke -2
Efficacy and Safety of Interleukin-6 Receptor Inhibitor Combined With Endovascular Treatment in Patients With Acute Anterior Circulation Large Vessel Occlusion Stroke: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial-2 (IRIS-2)
Capital Medical University
692 participants
Dec 5, 2025
INTERVENTIONAL
Conditions
Summary
This study is a randomized, double-blind, placebo-controlled clinical trial. Investigators aim to assess the efficacy and safety of interleukin-6 receptor inhibitor combined with endovascular treatment in patients with acute anterior circulation large vessel occlusion stroke.
Eligibility
Inclusion Criteria6
- Age 18 years or greater, male or female;
- Acute ischemic stroke caused by occlusion of intracranial segment of the internal carotid artery, middle cerebral artery M1 or proximal/dominant M2 segment;
- Decided to undergo emergency endovascular treatment;
- Time from stroke onset to arterial puncture within 24 hours;
- National Institutes of Health Stroke Scale (NIHSS) score ≥ 6;
- Signed informed consent from the patients or the legally authorized representatives.
Exclusion Criteria19
- Intracerebral hemorrhage, epidural hematoma, subdural hematoma, intraventricular hemorrhage, or subarachnoid hemorrhage;
- Pre-stroke modified Rankin scale (mRS) score >1;
- Known allergy to tocilizumab or excipients;
- Known allergy to iodinated contrast agents;
- Anticipated difficulty in completing endovascular treatment due to vascular tortuosity;
- History of congenital or acquired bleeding disorders, coagulation factor deficiency diseases, or thrombocytopenic diseases;
- Systolic blood pressure ≥180mmHg or diastolic blood pressure ≥110mmHg despite blood pressure control;
- Neutrophils <2×109 /L;
- Platelets <100×109 /L;
- Blood glucose <2.8mmol/L (50 mg/dL) or >22.2mmol/L (400 mg/dL);
- Serum alanine aminotransferase (ALT) or aspartate aminotransferase (AST) levels >2 times the upper limit of normal;
- Known recent or current serum creatinine >2 times the upper limit of normal or estimated glomerular filtration rate (eGFR) <60 mL/min;
- Pregnant, lactating, or planning pregnancy within 90 days;
- Severe mental disorders or inability to comply with informed consent and follow-up requirements due to dementia;
- Concurrent malignant tumors or severe systemic diseases with expected survival of less than 90 days;
- Presence of autoimmune diseases or use of immunosuppressive drugs;
- Systemic infectious diseases;
- Participation in another interventional clinical study within 30 days before randomization or currently participating in another interventional clinical study;
- Considered by the investigator to have other conditions that might affect compliance or preclude participation in this study.
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Interventions
240 mg of tocilizumab injection will be diluted in 0.9% NaCl solution to prepare a total solution volume of 100 mL. The solution will be administered via intravenous infusion immediately after randomization, and no later than 30 minutes, with an infusion duration of more than 1 hour.
An equivalent volume of placebo will be diluted in 0.9% NaCl solution to prepare a total solution volume of 100 mL. The solution will be administered via intravenous infusion immediately after randomization, and no later than 30 minutes, with an infusion duration of more than 1 hour.
Locations(53)
View Full Details on ClinicalTrials.gov
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NCT07263776