Natalizumab High Titer Immunogenicity and Safety

May 1, 2014 updated by: Biogen

A Multicenter, Open-Label Immunogenicity and Safety Study of Natalizumab High Titer Material (BG00002-E) in Subjects With Relapsing Forms of Multiple Sclerosis

The primary objective of the study was to evaluate the immunogenicity of natalizumab (Tysabri®) produced by a modified manufacturing process (natalizumab high titer; BG00002-E) administered intravenously (IV) to participants with relapsing forms of multiple sclerosis (MS). The secondary objective of this study was to evaluate the safety of natalizumab high titer.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

113

Phase

  • Phase 2

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
    • District of Columbia
      • Washington, District of Columbia, United States, 20007
        • Research Site
    • Florida
      • Maitland, Florida, United States, 32751
        • Research Site
      • Miami, Florida, United States, 33136
        • Research Site
    • Georgia
      • Atlanta, Georgia, United States, 30327
        • Research Site
    • Michigan
      • Farmington Hills, Michigan, United States, 48334
        • Research Site
    • New York
      • Buffalo, New York, United States, 14203
        • Research Site
      • New York, New York, United States, 10003
        • Research Site
    • North Carolina
      • Charlotte, North Carolina, United States, 28207
        • Research Site
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • Research Site
      • Pittsburgh, Pennsylvania, United States, 15212
        • Research Site
    • Texas
      • Dallas, Texas, United States, 75214
        • Research Site
      • Round Rock, Texas, United States, 78681
        • Research Site
    • Wisconsin
      • Milwaukee, Wisconsin, United States, 53215
        • Research Site

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

18 years to 55 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosis of a relapsing form of MS
  • Must fall within the therapeutic indications stated in the locally approved label for natalizumab
  • Other protocol-defined inclusion criteria may apply

Exclusion Criteria:

  • Prior treatment with natalizumab
  • Considered by investigator to be immunocompromised
  • Other protocol-defined 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

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Natalizumab High Titer
natalizumab high titer 300 mg administered as intravenous (IV) infusion over 60 minutes once every 4 weeks for up to 9 doses
Biological: BG00002-E (natalizumab high titer)
Other Names:
  • Tysabri

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of Participants With Anti-Natalizumab Antibody Negative, Transient Positive, and Persistent Positive Status
Time Frame: Assessed every 12 weeks from Week 0 (Baseline) to Week 36
Negative: no detectable antibody at all post-baseline visits. Persistent positive: antibody positive at 2 or more post-baseline visits at least 42 days apart, or positive at the last post-baseline visit. Transient positive: antibody positive at only 1 post-baseline visit prior to the last visit.
Assessed every 12 weeks from Week 0 (Baseline) to Week 36

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of Participants With Adverse Events (AEs), Serious Adverse Events (SAEs), and Discontinuations Due to AEs
Time Frame: AEs: collected from Baseline (Week 0) until Week 36 or premature withdrawal. SAEs: collected from informed consent until Week 36 or premature withdrawal.
AE: any sign, symptom, or diagnosis/disease that was unfavorable or unintended, new, or if pre-existing, worsened in a participant administered a study treatment and that did not necessarily have a causal relationship with this treatment. SAE: an event that resulted in death; an event that, in the view of the investigator, placed the participant at immediate risk of death (life-threatening event); an outcome that resulted in a congenital anomaly/birth defect diagnosed in a child of a participant in this study; an event that required or prolonged inpatient hospitalization; an event that resulted in persistent or significant disability/incapacity; any other medically important event that, in the opinion of the investigator, may have jeopardized the participant or may have required intervention to prevent one of the other outcomes listed above. Events were classified as 'related' or 'not related' to study drug, and categorized as 'mild' moderate' or 'severe' per protocol.
AEs: collected from Baseline (Week 0) until Week 36 or premature withdrawal. SAEs: collected from informed consent until Week 36 or premature withdrawal.
Mean Change From Baseline in Expanded Disability Status Scale (EDSS) Scores at Week 36
Time Frame: Baseline, Week 36
EDSS assesses disability in 8 functional systems. An overall score ranging from 0 (normal) to 10 (death due to MS) was calculated. The change in EDSS at Month 36 was calculated as EDSS at Month 36 minus EDSS at baseline.
Baseline, Week 36
Annualized Relapse Rate
Time Frame: Through Week 36
Annualized relapse rate was calculated as the total number of relapses that occurred during the study divided by the total number of years the participant was followed in the study. The annualized relapse rate was based only on those relapses that were determined to meet the definition of relapse per the investigator's clinical judgment. New or recurrent symptoms that occurred less than 30 days following the onset of a protocol-defined relapse were considered part of the same relapse.
Through Week 36

Collaborators and Investigators

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

Sponsor

Biogen

Collaborators

Elan Pharmaceuticals

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

October 1, 2006

Primary Completion (Actual)

October 1, 2007

Study Completion (Actual)

December 1, 2007

Study Registration Dates

First Submitted

August 14, 2007

First Submitted That Met QC Criteria

August 15, 2007

First Posted (Estimate)

August 16, 2007

Study Record Updates

Last Update Posted (Estimate)

May 15, 2014

Last Update Submitted That Met QC Criteria

May 1, 2014

Last Verified

May 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 101MS201

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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