A Phase 3 Open-label Interventional Study of Intravenous Recombinant Coagulation Factor VIII Fc-von Willebrand Factor-XTEN Fusion Protein, Efanesoctocog Alfa (BIVV001), in Patients With Severe Hemophilia A (XTEND-1)
- Conditions
- Factor VIII deficiency
- Registration Number
- JPRN-jRCT2080225103
- Lead Sponsor
- Sanofi K.K.
- Brief Summary
A total of 159 participants were enrolled and all of them received BIVV001. For the primary endpoint of ARB in prophylaxis arm, the estimated mean ABR was 0.71. Superiority to prior prophylactic FVIII replacement therapy was demonstrated, with a statistically significant reduction in ABR based on intra-patient comparison. BIVV001 was well tolerated and reported TEAEs were generally consistent with what is anticipated in an adult and adolescent population with severe hemophilia.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- completed
- Sex
- All
- Target Recruitment
- 159
1. Participant, male or female, must be equal to or greater than 12 years of age inclusive, at the time of signing the informed consent.
2. Severe hemophilia A, defined as <1 IU/dL (<1%) endogenous FVIII activity as documented either by central laboratory testing at Screening or in historical medical records from a clinical laboratory demonstrating <1% FVIII coagulant activity (FVIII:C) or a documented genotype known to produce severe hemophilia A
3. Previous treatment for hemophilia A (prophylaxis or on demand) with any recombinant and/or plasma-derived FVIII, or cryoprecipitate for at least 150 exposure days.
4. Current regimen includes one of the following:
- Prophylactic treatment regimen with a FVIII product or prophylactic emicizumab therapy for at least 6 months during the previous 12 months. Appropriate washout time needs to be taken into account.
- On-demand regimen with a FVIII product with a history of at least 12 bleeding episodes in the previous 12 months or at least 6 bleeding episodes in the previous 6 months prior to
study enrollment.
- - On-demand participant is accepting to move to a prophylaxis treatment regimen after 26-week on-demand period.
5. Willingness and ability of the participant or surrogate (a caregiver or a family member >=18 years of age) to complete training in the use of the study electronic Patient Diary (ePD) and to use the ePD throughout the study.
6. Ability of the participant or his or her legally authorized representative (eg., parent or legal guardian) to understand the purpose and risks of the study, willing and able to comply with study requirements and provide signed and dated informed consent or assent (as applicable) and authorization to use protected health information in accordance with national and local participant privacy regulations.
Participants are excluded from the study if any of the following criteria apply:
- Clinically significant liver disease.
- Serious active bacterial or viral infection (other than chronic hepatitis or HIV) present within 30 days of Screening.
- Other known coagulation disorder(s) in addition to hemophilia A.
- History of hypersensitivity or anaphylaxis associated with any FVIII product
- Positive inhibitor results, defined as >=0.6 BU/mL at Screening. History of a positive inhibitor test defined as >=0.6 BU/mL. Family history of inhibitors will not exclude the participant.
- Use of Emicizumab within the 20 weeks prior to Screening
- Major surgery within 8 weeks prior to Screening.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method
- Secondary Outcome Measures
Name Time Method