TOP: Tysabri Observational Program

Sponsor
Biogen (Industry)
Overall Status
Active, not recruiting
CT.gov ID
NCT00493298
Collaborator
(none)
6,620
422
258.2
15.7
0.1

Study Details

Study Description

Brief Summary

The primary objective of this study is to assess the long-term safety and impact on disease activity and progression of natalizumab in participants with relapsing remitting multiple sclerosis (RRMS) in a clinical practice setting.

Condition or Disease Intervention/Treatment Phase

Detailed Description

TOP is an epidemiological observational study of participants receiving natalizumab, with each participant to be followed for up to 15 years. This study is designed to address the long-term safety profile and the long-term impact on disease activity and progression of Tysabri with marketed use, and the impact of treatment on disability in particular by comparing the results with prospectively determined controls from established databases.

Study Design

Study Type:
Observational
Actual Enrollment :
6620 participants
Observational Model:
Cohort
Time Perspective:
Prospective
Official Title:
TOP: Tysabri® Observational Program
Actual Study Start Date :
Jun 29, 2007
Anticipated Primary Completion Date :
Jan 3, 2029
Anticipated Study Completion Date :
Jan 3, 2029

Arms and Interventions

Arm Intervention/Treatment
natalizumab

According to the local prescribing information

Drug: natalizumab
According to the local prescribing information
Other Names:
  • Tysabri
  • BG00002
  • Outcome Measures

    Primary Outcome Measures

    1. Number of participants with serious adverse events (SAE) [Up to 15 years]

    Secondary Outcome Measures

    1. Annualized Relapse Rate (ARR) [Yearly for up to 15 years]

      A clinical relapse is defined as new or recurrent neurological symptoms, not associated with fever, lasting for at least 24 hours, and followed by a period of 30 days of stability or improvement. New or recurrent neurological symptoms that occur less than 30 days following the onset of a protocol-defined relapse should be considered part of the same relapse.

    2. Distribution of the total number of relapses [Yearly for up to 15 years]

    3. Time to first relapse [Yearly for up to 15 years]

    4. Percentage of participants with relapse [Yearly for up to 15 years]

    5. Percentage of participants with disability progression [Yearly for up to 15 years]

      Disability progression is defined as at least a 1.0 point increase on the Expanded Disability Status Scale (EDSS) from Baseline that is sustained over 6 months. The EDSS measures disability status on a scale ranging from 0 to 10, with higher scores indicating more disability. Scoring is based on measures of impairment in eight functional systems on examination by a neurologist.

    6. Percentage of participants that reach Expanded Disability Status Score (EDSS) milestones indicating increasing disability [Yearly for up to 15 years]

      The percentage of participants that reach EDSS milestones such as 4.0, 6.0, and 7.0 sustained after 6 months. The EDSS measures disability status on a scale ranging from 0 to 10, with higher scores indicating more disability. Scoring is based on measures of impairment in eight functional systems on examination by a neurologist.

    7. Percentage of participants whose EDSS worsened, stabilized or improved and sustained over 6 months [Yearly for up to 15 years]

    8. Evaluation of baseline disease characteristics as prognostic indicators for disease activity and disability progression over time [Yearly for up to 15 years]

      Baseline disease characteristics evaluated will include: EDSS; Disease duration at baseline; Number of relapses during 1 and 2 years before baseline; Previous use of disease modifying therapy; Age, gender.

    9. Evaluation of short-term (1 year) disease outcomes as prognostic indicators for disease activity and disability progression over time [Yearly for up to 15 years]

      Short term outcomes evaluated will include: EDSS progression during first 12 months; Occurrence of relapses during first 12 months

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years to 65 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Key Inclusion Criteria:
    • Documented diagnosis of Relapsing Remitting Multiple Sclerosis

    • The decision to treat with Tysabri must precede enrollment

    • Patient must be a new Tysabri user, and must not have had more than 3 Tysabri infusions prior to enrollment

    • Must have had at least one relapse in the previous year, and must satisfy locally approved therapeutic indications for Tysabri

    Key Exclusion Criteria:
    • History of Progressive Multifocal Leukoencephalopathy or other opportunistic infections, or an increased risk of opportunistic infections

    • History of positive anti-natalizumab antibodies

    • Concomitant Immunomodulatory or immunosuppressive therapy during therapy with Tysabri

    • Patient immunocompromised at the time of enrollment

    • Known active malignancy

    • Women must not be breast feeding or pregnant, or planning to become pregnant (must use birth control unless surgically sterile)

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

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Research Site Buenos Aires Argentina 8000
    2 Research Site Buenos Aires Argentina C1061ABD
    3 Research Site Buenos Aires Argentina C1118AAT
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    Sponsors and Collaborators

    • Biogen

    Investigators

    • Study Director: Medical Director, Biogen

    Study Documents (Full-Text)

    None provided.

    More Information

    Additional Information:

    Publications

    None provided.
    Responsible Party:
    Biogen
    ClinicalTrials.gov Identifier:
    NCT00493298
    Other Study ID Numbers:
    • IMA-06-02
    First Posted:
    Jun 28, 2007
    Last Update Posted:
    Feb 8, 2021
    Last Verified:
    Feb 1, 2021

    Study Results

    No Results Posted as of Feb 8, 2021