Study to Investigate the Long-term Efficacy and Safety of Human-cl rhFVIII in Previously Treated Patients (PTPs)

March 3, 2020 updated by: Octapharma

Clinical Study to Investigate the Long-Term Efficacy, Safety and Immunogenicity of Human-cl rhFVIII in Previously Treated Patients With Severe Haemophilia A - Extension Study to GENA-01

The purpose of the study is to study the long-term efficacy, safety and tolerability of Human-cl rhFVIII in previously treated patients with severe hemophilia A.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

3

Phase

  • Phase 3

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

  • Bulgaria
      • Sofia, Bulgaria
        • Haematological Hospital SHAT "Joan Pavel"
  • United States
    • District of Columbia
      • Washington, District of Columbia, United States, 20057
        • Georgetown University

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

Ages Eligible for Study

12 years to 65 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Completion of GENA-01 study with at least 50 Exposure Days (EDs) and at least 6 months study participation and immediate enrollment into GENA-11

Exclusion Criteria:

  • Development of FVIII inhibitors (<=0.6 BU), during the course of the GENA-01 study
  • Development of any severe liver or kidney disease (ALT and AST level > 5 times of upper limit of normal, creatine >120 micro mol/L) during the course of the GENA-01 study

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
Intervention / Treatment
Experimental: Human-cl rhFVIII
Recombinant FVIII derived from a human cell line.
Biological: Human-cl rhFVIII
Human-cl rhFVIII is administered intravenously on demand for bleeding episodes and prophylactically in case of surgery. The dosage depends on the severity of the bleeding episodes and the surgery.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Long-term Immunogenicity
Time Frame: up to 3 years
Patients will be monitored for inhibitors against FVIII every 3 months. Blood samples were drawn and inhibitor activity was determined by the modified Bethesda assay (Nijmegen modification) in the central lab.
up to 3 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
To Determine Long-term Efficacy of Human-cl rhFVIII in the Treatment of Bleeding Episodes and in Surgical Prophylaxis
Time Frame: up to 3 years

The efficacy of human-cl rhFVIII will be determined using a 4 point efficacy assessment scale.

After each infusion of IMP and at the end of a BE, the following efficacy assessment is made by the subject (together with the Investigator in case of on-site treatment):

Excellent: Abrupt pain relief and/or unequivocal improvement in objective signs of bleeding within approximately 8 hours after a single infusion.

Good: Definite pain relief and/or improvement in signs of bleeding within approximately 8 - 12 hours after an infusion requiring up to 2 infusions for complete resolution.

Moderate: Probable or slight beneficial effect within approximately 12 hours after the first infusion requiring more than two infusions for complete resolution.

None: No improvement within 12 hours, or worsening of symptoms, requiring more than 2 infusions for complete resolution.

The assessment was made at the end of a BE in case more than one infusion was needed.
up to 3 years

Collaborators and Investigators

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

Sponsor

Octapharma

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

June 1, 2011

Primary Completion (Actual)

August 1, 2012

Study Completion (Actual)

August 1, 2012

Study Registration Dates

First Submitted

April 22, 2011

First Submitted That Met QC Criteria

April 25, 2011

First Posted (Estimate)

April 26, 2011

Study Record Updates

Last Update Posted (Actual)

March 17, 2020

Last Update Submitted That Met QC Criteria

March 3, 2020

Last Verified

March 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GENA-11

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.

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