Phase I/IIa Study of FIXFc in Hemophilia B Patients

December 16, 2020 updated by: Bioverativ Therapeutics Inc.

A Phase I/IIa Safety and Pharmacokinetic Study of Intravenous FIXFc in Previously Treated Hemophilia B Patients

The primary objective of the study is to assess safety of FIXFc at doses ranging from 1 to 100 IU/kg.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study was previously posted by Syntonix Pharmaceuticals, Inc. In January, 2007, sponsorship of the trial was transferred to Biogen Idec. In February, 2017, sponsorship of the trial was transferred to Bioverativ.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
10

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Illinois
      • Chicago, Illinois, United States, 60612
        • Rush University Medical Center
    • Indiana
      • Indianapolis, Indiana, United States, 46260
        • Indiana Hemophilia & Thrombosis center
    • Massachusetts
      • Boston, Massachusetts, United States, 02115
        • Brigham & Women's Hospital
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27599
        • University of North Carolina Medical School
    • Pennsylvania
      • Pittsburgh, Pennsylvania, United States, 15213
        • Hemophilia Center of Western PA
    • Washington
      • Seattle, Washington, United States, 98104
        • Puget Sound Blood Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Key Inclusion Criteria:

  1. Are previously treated (PTPs) with severe (<2 IU/dL endogenous FIX level) hemophilia B and at least 150 prior documented exposure days to other FIX products.
  2. Have no prior history of or currently detectable inhibitor defined as > 0.6 Bethesda units by the local lab. A family history of inhibitors will not exclude the patient.
  3. No prior history of an allergic reaction or anaphylaxis associated with any FIX or IVIG administration.
  4. No concurrent autoimmune disease.
  5. At least 7 days since their last dose of FIX (wash-out period).
  6. Certain laboratory testing criteria and other protocol-defined criteria may apply.
  7. HIV negative or if HIV positive with a CD4 count ≥ 200 cells/mm3. HIV patients are allowed to receive protease inhibitors per the discretion of the Investigator.

Key Exclusion Criteria:

  1. Presence of a major bleeding episode on Day 1 of study.
  2. Any coagulation disorder in addition to hemophilia B.
  3. A patient currently on a dose and regimen of FIX that would preclude participation in the study due to possible increased risk of bleeding because of the requirement to withhold treatment during the study period.
  4. A positive d-dimer at screening.
  5. Documented history of liver cirrhosis.
  6. Positive for HBsAg and/or positive for hepatitis C antibody, and/or HIV positive with an ALT or AST greater than 5 times upper limit of normal.
  7. Certain prior illnesses and other protocol-defined criteria.

NOTE: Other protocol defined Inclusion/Exclusion criteria may apply

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: rFIXFc
Six intravenous (IV) dose levels, 1, 5, 12.5, 25, 50, and 100 IU/kg
Drug: rFIXFc
As specified in the treatment arm
Other Names:
  • Alprolix
  • BIIB029
  • recombinant factor IX fusion protein
  • FIXFc

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Number of Participants experiencing Adverse Events
Time Frame: Up to 45 days
Up to 45 days

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Time to reach maximum concentration (Tmax)
Time Frame: Up to 45 days
Up to 45 days
Maximum concentration (Cmax)
Time Frame: Up to 45 days
Up to 45 days
Half-life (t½)
Time Frame: Up to 45 days
Up to 45 days
Clearance (CL)
Time Frame: Up to 45 days
Up to 45 days
Volume of distribution (Vd)
Time Frame: Up to 45 days
Up to 45 days
Area under the curve (AUC)
Time Frame: Up to 45 days
Up to 45 days
Mean residence time (MRT)
Time Frame: Up to 45 days
Up to 45 days
Incremental recovery (K)
Time Frame: Up to 45 days
Up to 45 days
Factor IX protein (FIX) activity
Time Frame: Up to 45 days
Up to 45 days
Recombinant (FIXFc) concentration over time curves
Time Frame: up to 45 days
up to 45 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Bioverativ Therapeutics Inc.

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Swedish Orphan Biovitrum
Syntonix Pharmaceuticals, Inc.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Medical Director, Bioverativ Therapeutics Inc.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2008

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2009

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2009

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 14, 2008

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 14, 2008

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 16, 2008

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 19, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 16, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • SYN-FIXFc-07-001

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings