Krasnogorsk

Researchers are investigating the use of a recombinant non-immunogenic staphylokinase Fortelyzin in patients who have experienced an acute ischemic stroke between 4.5 and 24 hours after symptom onset. This phase III, multicenter, double-blind, randomized, placebo-controlled trial aims to evaluate the efficacy and safety of this drug in restoring blood flow in patients with large vessel occlusion stroke who arrive outside the standard 4.5-hour treatment window. The study focuses on patients with salvageable brain tissue identified by advanced imaging techniques. Participants will be randomly assigned to receive either a single intravenous bolus injection of 10 mg non-immunogenic staphylokinase or a placebo administered rapidly within 5 to 10 seconds regardless of body weight. The trial excludes patients planned for direct thrombectomy. Following treatment, patients will be monitored for up to 90 days to assess outcomes. The trial evaluates functional recovery and reperfusion improvements compared to placebo. Throughout the study, participants will undergo imaging assessments such as CT or MRI perfusion scans to confirm eligibility and monitor brain tissue status. Researchers will evaluate functional outcomes using established stroke scales over 90 days, including the modified Rankin Scale and NIH Stroke Scale. Safety, mortality, and reperfusion rates will also be tracked. Participants will have follow-up visits and assessments designed to measure recovery and treatment impact over the trial period.