The primary objective of the study is to evaluate the safety of rFVIIIFc (BIIB031) in previously untreated participants with severe hemophilia A. The secondary objectives are to evaluate the efficacy of rFVIIIFc in the prevention and treatment of bleeding episodes in previously untreated patients (PUPs), to evaluate rFVIIIFc consumption for the prevention and treatment of bleeding episodes in PUPs, and to describe experience with the use of rFVIIIFc for immune tolerance induction (ITI) in participants with inhibitors.
An Open-Label, Multicenter Evaluation of the Safety and Efficacy of Recombinant Coagulation Factor VIII Fc Fusion Protein (rFVIIIFc; BIIB031) in the Prevention and Treatment of Bleeding in Previously Untreated Patients With Severe Hemophilia A
Hemophilia Aprophylaxis treatmentHemophiliaepisodic treatmentFactor VIIIImmunoglobulin Fc Fragments
For males ages up to 5 years
Key Inclusion Criteria:
Ability of the participant's legally authorized representative (e.g. their parent or legal guardian) to understand the purpose and risks of the study and provide signed and dated informed consent and authorization to use confidential health information in accordance with national and local subject privacy regulations.
Weight ≥3.5 kg at the time of screening.
Severe hemophilia A defined as <1 IU/dL (<1%) endogenous FVIII documented in the medical record or as tested during the Screening Period
Key Exclusion Criteria:
Any exposure to blood components, factor VIII replacement products, including commercially available rFVIIIFc at any time prior to or during screening.
Other coagulation disorder(s) in addition to hemophilia A.
Any concurrent clinically significant major disease that, in the opinion of the Investigator, would make the participant unsuitable for enrollment.
Current systemic treatment with chemotherapy and/or other immunosuppressant drugs.
Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Research Siteaccepting new patients San Francisco, California, 94143, United States
Research Siteaccepting new patients Sacramento, California, 95817, United States
Research Siteaccepting new patients Duarte, California, 91010, United States
Research Siteaccepting new patients Torrance, California, 90509, United States