Study Evaluating of Recombinant Human Factor IX (BeneFIX) and a New Formulation of BeneFIX (rFIX-R) in Moderate to Severe Hemophilia B
A Double-Blind, Randomized, Crossover Evaluation of the Pharmacokinetics of Recombinant Human Factor IX (BeneFIX) and a New Formulation of BeneFIX (rFIX-R); and an Open-Label Safety and Efficacy Evaluation of rFIX-R in Previously Treated Patients With Moderate to Severe (FIX:C≤2%) Hemophilia B
1 other identifier
interventional
N/A
0 countries
N/A
Brief Summary
The primary objective of this clinical research study is to establish the bioequivalence of 2 treatments, rFIX and rFIX-R, when given as a 10-minute intravenous bolus infusion.
Trial Health
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
October 4, 2004
CompletedFirst Posted
Study publicly available on registry
October 7, 2004
CompletedStudy Completion
Last participant's last visit for all outcomes
September 1, 2005
CompletedDecember 5, 2007
December 1, 2007
October 4, 2004
December 3, 2007
Conditions
Interventions
Eligibility Criteria
You may qualify if:
- Moderate to severe hemophilia B (FIX: C ≤2%)
- Previously treated patients (PTPs) with ≥150 documented exposure days
- Age ≥ 12 years (US sites only)
You may not qualify if:
- Detectable factor IX inhibitor defined as ≥0.6 Bethesda Units for pooled plasma reported by the local laboratory (family history of inhibitors will not exclude the patient)
- Patient history of factor IX inhibitor replacement therapy
- Patient unable to be off factor IX replacement therapy for at least 5 days without bleeding
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Related Publications (2)
Wojciechowski J, Gaitonde P, Hughes JH, Ravva P. Population Modeling of Factor IX Activity Following Administration of Fidanacogene Elaparvovec Gene Therapy in Participants with Hemophilia B. Clin Pharmacokinet. 2025 Oct;64(10):1531-1548. doi: 10.1007/s40262-025-01535-y. Epub 2025 Aug 1.
PMID: 40750723DERIVEDRendo P, Smith L, Lee HY, Shafer F. Nonacog alfa: an analysis of safety data from six prospective clinical studies in different patient populations with haemophilia B treated with different therapeutic modalities. Blood Coagul Fibrinolysis. 2015 Dec;26(8):912-8. doi: 10.1097/MBC.0000000000000359.
PMID: 26196195DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Medical Monitor, MD
Wyeth is now a wholly owned subsidiary of Pfizer
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Purpose
- TREATMENT
- Intervention Model
- CROSSOVER
- Sponsor Type
- INDUSTRY
Study Record Dates
First Submitted
October 4, 2004
First Posted
October 7, 2004
Study Completion
September 1, 2005
Last Updated
December 5, 2007
Record last verified: 2007-12