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Tysabri Observational Cohort Study - Multiple Sclerosis (MS) Registries

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ClinicalTrials.gov Identifier: NCT03399981
Recruitment Status : Active, not recruiting
First Posted : January 17, 2018
Last Update Posted : June 14, 2019
Sponsor:
Information provided by (Responsible Party):
Biogen

Study Description
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Brief Summary:
The primary purpose of this study is to estimate the incidence of progressive multifocal leucoencephalopathy (PML) among patients who switched to Tysabri from disease modifying therapies (DMTs), including newer DMTs (including fingolimod, dimethyl fumarate and teriflunomide) and the established DMTs (interferon beta and glatiramer acetate). Researchers will also look to estimate the incidence of other serious opportunistic infections among patients who switch to Tysabri from newer DMTs (including fingolimod, dimethyl fumarate and teriflunomide) and the established DMTs (interferon beta and glatiramer acetate)

Condition or disease Intervention/treatment
Progressive Multifocal Leukoencephalopathy Biological: Tysabri

Detailed Description:

This is an observational cohort study utilising all available data from the Tysabri TOUCH (TYSABRI Outreach: Unified Commitment to Health) prescribing programme (US) supplemented with data from European Union (EU) multiple sclerosis (MS) registries to estimate the risk of PML and other serious opportunistic infections (OIs) among patients on Tysabri who have switched from newer DMTs (including fingolimod, dimethyl fumarate and teriflunomide) and the established DMTs (interferon beta and glatiramer acetate).

This study will provide cumulative data from its two components separately: a retrospective component (data captured prior to 1 January 2016) and a prospective component (data captured, and patients followed up, from 1 January 2016 through 31 December 2023; total prospective study duration of 8 years). All patients who switched to Tysabri from another DMT through 31 December 2020 will be included. The study will continue to follow-up patients until 31 December 2023 to allow for a minimal follow-up of 3 years.

Study Design
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Study Type : Observational
Actual Enrollment : 72600 participants
Observational Model: Cohort
Time Perspective: Other
Official Title: An Observational Study Utilising Data From the US Tysabri TOUCH Programme and Select EU MS Registries to Estimate the Risk of Progressive Multifocal Leukoencephalopathy (PML) and Other Serious Opportunistic Infections Among Patients Who Were Exposed to an MS Disease Modifying Treatment Prior to Treatment With Tysabri
Actual Study Start Date : January 24, 2018
Estimated Primary Completion Date : December 31, 2023
Estimated Study Completion Date : December 31, 2023

Resource links provided by the National Library of Medicine

Drug Information available for: Natalizumab

Groups and Cohorts
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Group/Cohort Intervention/treatment
Tysabri (TOUCH Cohort)
Patients from the Tysabri TOUCH prescribing programme who have switched to Tysabri from newer DMTs (including fingolimod, dimethyl fumarate and teriflunomide) and the established DMTs (interferon beta and glatiramer acetate).
 Biological: Tysabri
Administered as specified in the treatment arm.
Other Name: Natalizumab BG00002
Tysabri (EU MS Cohort)
Patients from the EU MS registry who have switched to Tysabri from newer DMTs (including fingolimod, dimethyl fumarate and teriflunomide) and the established DMTs (interferon beta and glatiramer acetate).
 Biological: Tysabri
Administered as specified in the treatment arm.
Other Name: Natalizumab BG00002


Outcome Measures
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Primary Outcome Measures :
  1. Prospective and Retrospective Analyses: Number of Participants with Confirmed Progressive Multifocal Leukoencephalopathy (PML) [ Time Frame: Retrospective: from the time of switching to Tysabri to 31 December 2015; Prospective: from the time of switching to Tysabri (on or after 01 January 2016) to 31 December 2023 (up to 8 years) ]

    Confirmed cases of PML must have one of the following:

    • Brain biopsy or brain from post mortem examination showing evidence of viral cytopathic changes on hematoxylin and eosin (H & E) staining associated with either positive immunohistochemistry for SV40 or in-situ hybridization for John Cunningham Virus (JCV) deoxyribonucleic acid (DNA) OR

    All of the following criteria:

    • Cerebrospinal fluid (CSF) with evidence of JCV DNA, preferably by ultra-sensitive quantitative polymerase chain reaction (PCR) testing (limit of quantification of ≤ 50 copies/ml), or JCV DNA on brain biopsy by PCR AND detailed description of brain magnetic resonance imaging (MRI) findings that are consistent with PML AND PREFERABLY new or progressive clinical symptoms suggestive of PML


  2. Prospective and Retrospective Analyses: Number of Participants with Serious Adverse Events of Other Serious Opportunistic Infections (OIs) [ Time Frame: Retrospective: from the time of switching to Tysabri to 31 December 2015; Prospective: from the time of switching to Tysabri (on or after 01 January 2016) to 31 December 2023 (up to 8 years) ]

    An SAE is any untoward medical occurrence at any dose that results in death, immediate risk of death, hospitalization, disability, or congenital anomaly/birth defect.

    Opportunistic infections (OIs) are infections that occur more frequently and are more severe in individuals with weakened immune systems.



Eligibility Criteria
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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
All TOUCH and available EU MS registry patients who have switched from DMTs (including fingolimod, dimethyl fumarate, teriflunomide, interferon beta and glatiramer acetate) and have one or more infusion(s) of Tysabri.
Criteria

Key Inclusion Criteria:

  • All TOUCH and available EU MS registry patients who have switched from DMTs (including fingolimod, dimethyl fumarate, teriflunomide, interferon beta and glatiramer acetate) and have one or more infusion(s) of Tysabri.

Key Exclusion Criteria:

-

NOTE: Other protocol defined Inclusion/Exclusion criteria may apply

Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03399981


Locations
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United States, Massachusetts
Research Site
Cambridge, Massachusetts, United States, 02142
Sponsors and Collaborators
Biogen
Investigators
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Study Director: Medical Director Biogen
More Information
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Responsible Party: Biogen
ClinicalTrials.gov Identifier: NCT03399981    
Other Study ID Numbers: 101MS411
First Posted: January 17, 2018    Key Record Dates
Last Update Posted: June 14, 2019
Last Verified: June 2019

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Leukoencephalopathy, Progressive Multifocal
Leukoencephalopathies
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Encephalitis, Viral
Central Nervous System Viral Diseases
Virus Diseases
Polyomavirus Infections
 DNA Virus Infections
Slow Virus Diseases
Infectious Encephalitis
Encephalitis
Central Nervous System Infections
Demyelinating Diseases
Natalizumab
Immunologic Factors
Physiological Effects of Drugs