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IHBDH-GTHA-2020 is an open-label, non-randomized study evaluating the safety, tolerability and kinetics of a single intravenous infusion of GS001 in people with hemophilia A. It enrolls male participants aged 18 and older whose residual endogenous FVIII activity is 1 IU/dL (1%) or below at screening. Participants must understand the purpose and risks of the study and provide informed consent.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Inclusion Criteria: 1. Be able to understand the purpose and risks of the study and provide informed consent according to national and local privacy laws; 2. Male subjects and ≥ 18 years of age; 3. Have hemophilia A with ≤1 IU/dL (≤1%) endogenous FVIII activity levels at the time of screening. If the screening result is \>1% due to previous treatment with FVIII product, then it may be confirmed by documented historical evidence from a certified clinical laboratory demonstrating ≤1% FVIII activity levels ; 4. No history of hypersensitivity or anaphylaxis associated with FVIII product administration; 5. Have no measurable FVII inhibitor as assessed by laboratory two times that were at least one week apart; or documented no prior history of FVIII inhibitor after 150 EDs and no clinical signs or symptoms of decreased response to FVIII infusion ; 6. Have acceptable laboratory values sampled at screening and repeated prior to Day 0; A. Hemoglobin ≥ 11 g/dL; B. Platelets ≥ 100 x 10\^9/L; C. AST, ALT, alkaline phosphatase ≤ 1.25 upper limit of normal (ULN); D. Bilirubin ≤ 1.25 ULN; E. Creatinine ≤ 2 mg/dL. 7. Agree to use reliable barrier contraception until the end of the 52 weeks observation period, and three consecutive semen samples are negative for vector sequences after GS001 infusion. Exclusion Criteria: 1. Have Hepatitis B, hepatitis C or HBsAg, HCVAb, HBV-DNA, HCV-RNA are positive and have clinical significance. Both natural clearers and those who have cleared HCV on antiviral therapy are deemed eligible; 2. Currently Receiving antiviral therapy for hepatitis B and C; 3. Have history of chronic infections or other chronic diseases that may pose a risk to the study participation; 4. Have participated in a previous gene therapy research trial within the last 52 weeks or in a clinical study with an investigational drug within the past 30 days; 5. The subject has any concurrent diseases that cannot tolerate treatments of prednisone or prednisolone as judged by the investigator; 6. History of arterial or venous thromboembolic events (e.g., deep vein thrombosis, non-hemorrhagic stroke, pulmonary embolism, myocardial infarction, arterial embolism); 7. Known inherited or acquired thrombophilia, including conditions associated with increased risk of thromboembolism, such as atrial fibrillation; 8. Major surgery planned in 1 year period following the infusion with GS001; 9. Hypersensitivity to the study vector; 10. Have clinically major diseases or any other unspecified conditions that, in the opinion of the Investigator, makes the subject unsuitable for participating in the study; 11. Patients who are unable or unwilling to comply with the schedule of visits and study assessments described in the clinical protocol; 12. Evidence of other bleeding disorders not associated with hemophilia A.