Cognitive Evolution in Tysabri Treated Multiple Sclerosis Patients

Status Completed

Clinical Trial Summary

This study is designed to demonstrate that Tysabri is effective in maintaining cognition in MS patients after 5 or more years of continuous treatment.

During a second period of 36 months, the extension study will assess the evolution of cognitive function in Tysabri treated MS patients using the Symbol Digit Modalities Test (SDMT) and a CogState battery of tests.

Clinical Trial Description

Tysabri reduces the relapse frequency, slows progression and preserves cognitive function as compared to placebo as per the AFFIRM trial. The benefit on relapse rate and progression appears to be sustained in longer-term studies such as STRATA. In clinical practice however despite a stable EDSS patients often complain of cognitive deterioration.

The investigators' preliminary results from the first pilot study have shown that cognition in Tysabri treated MS patients for two or more years, as measured by the SDMT or Cogstate battery is maintained, including the ability to learn. The investigators' final data will be presented at the American Academy of Neurology (AAN) in 2015.

The Symbol Digit Modalities Test (SDMT) is a sensitive and validated test of cognition in MS. CogState offers a standardized battery of cognitive tests frequently used in clinical research in the fields of dementia and Parkinson's disease. The CogState battery of tests consisting of the Detection test (processing speed), Identification test (attention), One Back test (working memory), International Shopping List test (verbal learning) and the Groton Maze Learning test (reasoning and problem solving) will further confirm and validate the results of the SDMT in MS patients as well as examine other cognitive domains.

The Beck Depression Inventory-II [Beck 1996] is a validated and well recognized clinical research tool for depression in the field of multiple sclerosis.

Together the above tests done prospectively can assess the evolution of cognitive function in Tysabri treated MS patients over the longer term. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT02383550
Study type	Observational
Source	Clinique Neuro-Outaouais
Contact
Status	Completed
Phase	N/A
Start date	December 2014
Completion date	August 30, 2017

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Cognitive Evolution in Tysabri Treated Multiple Sclerosis Patients - A Three Year Extension — CogMS-Ext

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms