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Long-Term Safety and Efficacy of rFIXFc in the Prevention and Treatment of Bleeding Episodes in Previously Treated Participants With Hemophilia B (B-YOND)

This study is ongoing, but not recruiting participants.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01425723
First Posted: August 30, 2011
Last Update Posted: October 16, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Bioverativ Therapeutics Inc.
  Purpose

The primary objective of the study is to evaluate the long-term safety of rFIXFc in participants with hemophillia B.

The secondary objective of this study is to evaluate the efficacy of rFIXFc in the prevention and treatment of bleeding episodes.


Condition Intervention Phase
Severe Hemophilia B Biological: rFIXFc Phase 3

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: An Open-Label, Multicenter, Evaluation of the Long-Term Safety and Efficacy of Recombinant Human Coagulation Factor IX Fusion Protein (rFIXFc) in the Prevention and Treatment of Bleeding Episodes in Previously Treated Subjects With Hemophilia B

Resource links provided by NLM:


Further study details as provided by Bioverativ Therapeutics Inc.:

Primary Outcome Measures:
  • Occurrence of inhibitor development [ Time Frame: Up to 4 years ]

Secondary Outcome Measures:
  • The annualized number of bleeding episodes (spontaneous and traumatic) per participant [ Time Frame: Up to 4 years ]
  • The annualized number of spontaneous joint bleeding episodes per participant [ Time Frame: Up to 4 years ]
  • The total number of days of exposure per participant per year [ Time Frame: Up to 4 years ]
    One exposure day (ED) is equivalent to a 24 hour period in which rFIXFc is dosed.

  • The consumption of rFIXFc as total dose per kg per participant per year per treatment regimen [ Time Frame: Up to 4 years ]
  • Physicians global assessment of participant's response to his treatment regimen using a 4-point scale [ Time Frame: Up to 4 years ]
    Investigators will record assessments of each participant's response to his rFIXIFc regimen grading on the following 4-point scale: excellent, effective, partially effective, ineffective.

  • Participant's/ caregiver's assessment of response to treatment of bleeding episodes using a 4-point scale [ Time Frame: Up to 4 years ]
    Using the eDiary, each participant or the participant's caregiver will rate the treatment response to any bleeding episode using the following 4-point scale (excellent, good, moderate, or none).


Enrollment: 120
Actual Study Start Date: December 8, 2011
Estimated Study Completion Date: December 2017
Estimated Primary Completion Date: October 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: On-Demand
The individual dose of rFIXFc to treat bleeding episodes will be based on participant's clinical condition, type and severity of the bleeding event, and if indicated, Factor IX peak (recovery) levels.
Biological: rFIXFc
Administered as specified in the treatment arm.
Other Names:
  • coagulation factor IX (recombinant) Fc fusion protein
  • Alprolix
  • BIIB029
Experimental: Prophylaxis
Weekly prophylaxis, individualized prophylaxis or personalized prophylaxis available.
Biological: rFIXFc
Administered as specified in the treatment arm.
Other Names:
  • coagulation factor IX (recombinant) Fc fusion protein
  • Alprolix
  • BIIB029

Detailed Description:
Participants will follow either a prophylaxis or on-demand regimen. The starting dose in this study will be determined by the clinical profile of the patient in the preceding studies, B-LONG 998HB102 (NCT01027364) and Kids B-LONG study 9HB02PED (NCT01440946)
  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
Criteria

Key Inclusion Criteria:

  • Subjects who have completed studies 998HB102 (NCT01027364) or 9HB02PED (NCT01440946) or other studies with rFIXFc
  • Ability to understand the purposes & risks of the study and provide signed and dated informed consent.

Key Exclusion Criteria:

  • High-titer inhibitor (>/=5.00 BU/mL)

NOTE: Other protocol defined Inclusion/ Exclusion criteria may apply.

  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01425723


  Show 49 Study Locations
Sponsors and Collaborators
Bioverativ Therapeutics Inc.
Investigators
Study Director: Medical Director Bioverativ Therapeutics Inc.
  More Information

Responsible Party: Bioverativ Therapeutics Inc.
ClinicalTrials.gov Identifier: NCT01425723     History of Changes
Other Study ID Numbers: 9HB01EXT
2011-003075-11
First Submitted: August 19, 2011
First Posted: August 30, 2011
Last Update Posted: October 16, 2017
Last Verified: October 2017

Keywords provided by Bioverativ Therapeutics Inc.:
B-LONG
B-YOND
B-LONG Extension
rFIXFc
Severe Hemophilia B

Additional relevant MeSH terms:
Hemophilia A
Hemophilia B
Blood Coagulation Disorders, Inherited
Blood Coagulation Disorders
Hematologic Diseases
Coagulation Protein Disorders
Hemorrhagic Disorders
Genetic Diseases, Inborn
Genetic Diseases, X-Linked