Natalizumab (Tysabri) Re-Initiation of Dosing (STRATA)

June 16, 2016 updated by: Biogen

An Open-Label, Multicenter, Extension Study to Evaluate the Safety and Tolerability of Natalizumab Following Re-Initiation of Dosing in Multiple Sclerosis Subjects Who Have Completed Study C-1801, C-1802, C-1803, or C-1808 and a Dosing Suspension Safety Evaluation

The primary objectives for the initial treatment period of this study are to further evaluate the safety of natalizumab monotherapy by evaluating the risk of hypersensitivity reactions and immunogenicity following re-exposure to natalizumab and confirming the safety of switching from interferon (IFN), glatiramer acetate, or other multiple sclerosis (MS) therapies to natalizumab. The primary objective for the long-term treatment period of this study is to evaluate the long-term impact of natalizumab monotherapy on the progression of disability measured by Expanded Disability Status Scale (EDSS) changes over time.

Study Overview

Status

Terminated

Intervention / Treatment

Detailed Description

Study 101-MS-322 (NCT00306592) was conducted to evaluate the safety of natalizumab monotherapy following re-exposure to natalizumab in former clinical trial participants in Studies C-1801 (NCT00027300), C-1802 (NCT00030966), and C-1803 (NCT00097760) and included subjects in North America. In parallel with the conduct of that study, this study (101-MS-321 [NCT00297232]) was initiated for participants in Europe and the rest of the world. In addition, after 48 weeks, participants from 101-MS-322 (NCT00306592) could enter study 101-MS-321 (NCT 00297232), which was considered the Long-Term Treatment Period of 101-MS-322 (NCT00306592).

The primary purpose and primary outcome for both studies are identical; therefore, the combined long-term data from both studies are presented. (Combined Week 48 data from both studies are presented in the 101-MS-322 [NCT00306592] record.)

Study Type

Interventional

Enrollment (Actual)

1094

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

      • Camperdown, Australia, 2050
        • Research Site
      • Heidelberg, Australia, 3084
        • Research Site
      • Parkville, Australia, 3050
        • Research Site
      • Brugge, Belgium, 8000
        • Research Site
      • Brussels, Belgium, 1070
        • Research Site
      • Charleroi, Belgium, 6000
        • Research Site
      • Diepenbeek, Belgium, 3590
        • Research Site
      • Melsbroek, Belgium, 1820
        • Research Site
      • Sijsele, Belgium, 8340
        • Research Site
    • British Columbia
      • Vancouver, British Columbia, Canada, V6T 2B5
        • Research Site
    • Nova Scotia
      • Halifax, Nova Scotia, Canada, B3H IV7
        • Research Site
    • Ontario
      • Kingston, Ontario, Canada, K7L 2V7
        • Research Site
      • London, Ontario, Canada, N6A5A5
        • Research Site
      • New York, Ontario, Canada, M4N 3M5
        • Research Site
      • Ottawa, Ontario, Canada, K2G6E2
        • Research Site
      • Toronto, Ontario, Canada, M5B 1W8
        • Research Site
    • Quebec
      • Gatineau, Quebec, Canada, J8Y 1W7
        • Research Site
      • Greenfield Park, Quebec, Canada, J4V 2H1
        • Research Site
      • Montreal, Quebec, Canada, H3A2B4
        • Research Site
      • Brno, Czech Republic, 625 00
        • Research Site
      • Brno, Czech Republic, 656 91
        • Research Site
      • Hradec Kralove, Czech Republic, 500 05
        • Research Site
      • Olomouc, Czech Republic, 775 20
        • Research Site
      • Ostrava, Czech Republic, 708 52
        • Research Site
      • Pardubice, Czech Republic, 532 03
        • Research Site
      • Plzen, Czech Republic, 323 00
        • Research Site
      • Praha 2, Czech Republic, 12000
        • Research Site
      • Praha 5, Czech Republic, 150 06
        • Research Site
      • Aarhus C, Denmark, 8000
        • Research Site
      • Esbjerg, Denmark, 6700
        • Research Site
      • Kobenhavn, Denmark, 2100
        • Research Site
      • Helsinki, Finland, 00290
        • Research Site
      • Tampere, Finland, 33520
        • Research Site
      • Turku, Finland, 20100
        • Research Site
      • Besancon, France, 25030
        • Research Site
      • Bordeaux, France, 33076
        • Research Site
      • Clermont-Ferrand, France, 63003
        • Research Site
      • Creteil, France, 94101
        • Research Site
      • Dijon, France, 21033
        • Research Site
      • Lille, France, 59037
        • Research Site
      • Lyon, France, 69677
        • Research Site
      • Marseille, France, 13385
        • Research Site
      • Nancy, France, 54035
        • Research Site
      • Paris, France, 75019
        • Research Site
      • Paris, France, 75651
        • Research Site
      • Rennes, France, 35033
        • Research Site
      • Strasbourg, France, 67091
        • Research Site
      • Toulouse, France, 31059
        • Research Site
      • Berlin, Germany, 13347
        • Research Site
      • Essen, Germany, 45122
        • Research Site
      • Gießen, Germany, 35385
        • Research Site
      • Hannover, Germany, 30625
        • Research Site
      • Hennigsdorf, Germany, 16761
        • Research Site
      • München, Germany, 81377
        • Research Site
      • Offenbach, Germany, 63069
        • Research Site
      • Osnabrück, Germany, 49076
        • Research Site
      • Regensburg, Germany, 93053
        • Research Site
      • Rostock, Germany, 18147
        • Research Site
      • Athens, Greece, 11527
        • Research Site
      • Budapest, Hungary, 1115
        • Research Site
      • Budapest, Hungary, 1145
        • Research Site
      • Budapest, Hungary, 1204
        • Research Site
      • Budapest, Hungary, 1021
        • Research Site
      • Debrecen, Hungary, 4012
        • Research Site
      • Debrecen, Hungary, 4031
        • Research Site
      • Gyor, Hungary, 9000
        • Research Site
      • Nyiregyhaza, Hungary, 4400
        • Research Site
      • Szekesfehervar, Hungary, 8000
        • Research Site
      • Dublin, Ireland, 4
        • Research Site
      • Jerusalem, Israel, 91120
        • Research Site
      • Tel Hashomer, Israel, 52621
        • Research Site
      • Bari, Italy, 70124
        • Research Site
      • Genova, Italy, 16132
        • Research Site
      • Milano, Italy, 20132
        • Research Site
      • Roma, Italy, 00185
        • Research Site
      • Amsterdam, Netherlands, 1081HV
        • Research Site
      • Breda, Netherlands, 4818 CK
        • Research Site
      • Hertogenbosch, Netherlands, 5211 NL
        • Research Site
      • Nieuwegein, Netherlands, 3435 CM
        • Research Site
      • Nijmegen, Netherlands, 6533 PA
        • Research Site
      • Rotterdam, Netherlands, 3015 GD
        • Research Site
      • Auckland, New Zealand, 1023
        • Research Site
      • Christchurch, New Zealand, 8011
        • Research Site
      • Białystok, Poland, 15-402
        • Research Site
      • Białystok, Poland, 15-420
        • Research Site
      • Bydgoszcz, Poland, 85-681
        • Research Site
      • Gdańsk, Poland, 80-803
        • Research Site
      • Katowice, Poland, 40-752
        • Research Site
      • Kraków, Poland, 31-530
        • Research Site
      • Lodz, Poland, 90-153
        • Research Site
      • Lublin, Poland, 20-954
        • Research Site
      • Warsaw, Poland, 02-957
        • Research Site
      • Warszawa, Poland, 02-097
        • Research Site
      • Barcelona, Spain, 08035
        • Research Site
      • Barcelona, Spain, 08907
        • Research Site
      • Málaga, Spain, 29010
        • Research Site
      • Goteborg, Sweden, 41685
        • Research Site
      • Stockholm, Sweden, 17176
        • Research Site
      • Stockholm, Sweden, 141 86
        • Research Site
      • Basel, Switzerland, 4031
        • Research Site
      • Ankara, Turkey, 06100
        • Research Site
      • Istanbul, Turkey, 34390
        • Research Site
      • Istanbul, Turkey, 34303
        • Research Site
      • Essex, United Kingdom, RM7 0AG
        • Research Site
      • Liverpool, United Kingdom, L9 7AJ
        • Research Site
      • London, United Kingdom, SW17 0QT
        • Research Site
      • London, United Kingdom, E1 1BB
        • Research Site
      • London, United Kingdom, SE5 9RF
        • Research Site
      • Newcastle Upon Tyne, United Kingdom, NE14LP
        • Research Site
      • Oxford, United Kingdom, OX3 9DU
        • Research Site
      • Sheffield, United Kingdom, S10 2JF
        • Research Site
      • Stoke on Trent, United Kingdom, ST4 7LN
        • 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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Key Inclusion Criteria

  • MS subjects who completed Study C-1801 (NCT00027300), C-1802 (NCT00030966), or C-1803 (NCT00097760) and a Dosing Suspension Safety Evaluation (neurological examination or a magnetic resonance imaging scan) or participated in the IMA 04001 (STARS) Study
  • Subjects who are considered by the Investigator to be free of signs and symptoms suggestive of progressive multifocal leukoencephalopathy and willing to discontinue and remain free from concomitant immunosuppressive or immunomodulatory treatment (including IFN-beta and glatiramer acetate) while being treated with natalizumab during the study.
  • In addition, subjects who completed 48 weeks of treatment in Study 101-MS-322 (NCT00306592) in Canada will be allowed to enter this study at the start of the long-term treatment period (Week 52 - 480).

Key Exclusion Criteria

  • Considered by the Investigator to be immunocompromised
  • History of persistent anti-natalizumab antibodies, based upon testing from prior natalizumab studies
  • History of any major disease or malignancy
  • Discontinued natalizumab in a previous study due to allergic reaction

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
Intervention / Treatment
Experimental: Natalizumab
300 mg intravenous (IV) infusions once every 4 weeks for up to 480 weeks
Other Names:
  • Tysabri (BG00002)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time to 24-week Confirmed Expanded Disability Status Scale (EDSS) Progression
Time Frame: up to 480 weeks
Time to 24-week confirmed EDSS progression in participants with at least 2 post-baseline milestone EDSS assessments. EDSS assesses disability in 8 functional systems. An overall score ranging from 0 (normal) to 10 (death due to MS) was reported. Confirmed 24-week EDSS progression was defined as ≥ 0.5 point increase from a baseline EDSS ≥ 6.0, or ≥ 1.0 point increase from a baseline EDSS ≥ 1.0 and < 6.0, or ≥ 1.5 point increase from a baseline EDSS of 0, all sustained for 24 weeks.
up to 480 weeks
Time to 48-week Confirmed EDSS Progression
Time Frame: up to 480 weeks
Time to 48-week confirmed EDSS progression in particpants with at least 2 post-baseline milestone EDSS assessments. EDSS assesses disability in 8 functional systems. An overall score ranging from 0 (normal) to 10 (death due to MS) was reported. Confirmed 48-week EDSS progression was defined as ≥ 0.5 point increase from a baseline EDSS ≥ 6.0, or ≥ 1.0 point increase from a baseline EDSS ≥ 1.0 and < 6.0, or ≥ 1.5 point increase from a baseline EDSS of 0, all sustained for 48 weeks.
up to 480 weeks
Time to 24-week Confirmed EDSS Improvement Where Baseline ≥ 2.0
Time Frame: Up to 480 weeks
Time to 24-week confirmed EDSS improvement in subjects with at least 2 post-baseline milestone EDSS assessments. EDSS assesses disability in 8 functional systems. An overall score ranging from 0 (normal) to 10 (death due to MS) was reported. Confirmed 24-week EDSS improvement is defined as ≥ 1.0 point decrease from baseline sustained for 24 weeks.
Up to 480 weeks

Collaborators and Investigators

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

Sponsor

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.

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

March 1, 2006

Primary Completion (Actual)

April 1, 2014

Study Completion (Actual)

April 1, 2014

Study Registration Dates

First Submitted

February 27, 2006

First Submitted That Met QC Criteria

February 27, 2006

First Posted (Estimate)

February 28, 2006

Study Record Updates

Last Update Posted (Estimate)

July 15, 2016

Last Update Submitted That Met QC Criteria

June 16, 2016

Last Verified

May 1, 2015

More Information

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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