This study will include adults (ages 18-80) who have had a stroke caused by a large blood clot blocking blood flow in the brain. All patients in the study must have already had a treatment called a thrombectomy, where doctors remove the clot to help blood flow return to the brain. The goal of this study is to test the safety of a drug called EMPAVELI (pegcetacoplan). This drug is meant to lower swelling and inflammation that can happen after blood flow returns. The hope is that it may help protect the brain from more damage and improve recovery. People in the study will get three doses of EMPAVELI through an EMPAVELI-designed pump 0-3 hours post thrombectomy surgery and 24 and 48 hours after the initial dose. Doctors will check them with exams, blood tests, brain scans, and other tests while they are there. Patients will also have follow-up visits at 30 and 90 days to see how they are doing, per the usual standard of care. This research is important because, even with current stroke treatments, many patients still have problems like disability. If this drug is found to be safe, it could lead to better treatments to protect the brain and help people recover more fully after a stroke.
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Incidence of Treatment-Emergent Adverse Events
Timeframe: Through 90 days post-treatment