A Multicentre, Randomized, Double-blinded, Placebo-controlled Phase II Clinical Trial to Evaluate the Safety, Pharmacokinetic Profile, and Efficacy of QD202 Injection in Patients With Acute Ischemic Stroke Undergoing Thrombolysis
This is a randomized, double-blinded, placebo-controlled study investigating the safety and efficacy of QD202 injection in patients with acute ischemic stroke undergoing thrombolysis excluding endovascular thrombectomy. Up to 120 male and female patients with acute ischemic stroke undergoing thrombolysis excluding endovascular thrombectomy will be dosed with QD202 injection or placebo as a 60 minute intravenous infusion after completion of the thrombolysis procedure on Day 1-5 of the study period. Subjects will undergo interim procedures at Day 7 or the day of discharge, Day 30, and end-of-study procedures on Day 90.
• 1\. Subjects aged 18-85 years (inclusive), regardless of gender;
• 2\. Diagnosed with acute ischemic stroke according to the Chinese Guidelines for the Diagnosis and Treatment of Acute Ischemic Stroke (2023);
• 3\. Time from stroke onset ≤ 24 hours (Onset time is calculated from the time stroke symptoms appear. If the stroke occurred during sleep or if the time of symptom onset cannot be accurately determined due to aphasia, impaired consciousness, or other reasons, the time the subject was last known to be normal should be used as the onset time);
• 4\. Pre-stroke modified Rankin Scale (mRS) score ≤ 1;
• 5\. After this event and prior to thrombolysis, NIHSS score is between 6 and 20 (inclusive), and the sum of scores on NIHSS Item 5 (motor arm) and Item 6 (motor leg) is ≥ 2;
• 6\. Planned for or have already undergone thrombolytic therapy;
• 7\. Female subjects of childbearing potential must have a negative serum pregnancy test and report no sexual activity within 14 days prior to screening. Subjects of childbearing potential (female or male) must agree to have no plans for pregnancy or sperm donation throughout the study period and are willing to use at least one effective method of contraception;
• 8\. The subject or their legal guardian voluntarily signs the informed consent form (ICF).