Pharmacokinetic, Immunological and Biochemical Sample Collection and Analysis of a Tysabri Patient Cohort

Completed

Conditions studied: Multiple Sclerosis, Relapse

In brief

This is an open-label study of patients with relapsing forms of Multiple Sclerosis designed to assess the biochemical, immunological and pharmacokinetic profiles of a large, actively infusing natalizumab patient population. A duration effect for progressive multifocal leukoencephalopathy (PML) risk associated with natalizumab therapy appears to exist. There is minimal data available to understand this effect at the biochemical and cellular level. The purpose of this study is to gather preliminary data on several parameters to guide in more focused research on the duration effect.

Key facts

Study ID

NCT01070719

Run by

John F. Foley, MD

People needed

270

Starts

2010-02-01

Expected to finish

2010-05-01

Last updated by the study team

2012-03-01

Who can join

Age: 18 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Ability to understand the purpose and risks of the study and provide signed and dated informed consent and authorization to use protected health information (PHI) in accordance with national and local subject privacy regulations.
• Aged 18 to 75 years old, inclusive, at the time of informed consent.
• Must be a patient with a relapsing form of Multiple Sclerosis enrolled in the TOUCH Prescribing Program who is not expected to discontinue Tysabri® therapy prior to completion of the requirements of this study.
• Must have been treated with monthly IV infusions of Tysabri® 300 mg for at least 1 month.
• Must have a magnetic resonance imaging (MRI) brain scan, performed prior to the initiation of treatment with Tysabri®, on file.
• Must weigh between 42 and 126 kg, inclusive.
• Fifteen patients who are 1 month to-12 months of natalizumab therapy, fifteen patients who are 24 months and over of natalizumab therapy will be asked to participate in the TNF alpha subset.

You may not qualify if…

• Medical History:
• History of, or abnormal laboratory results indicative of, any clinically significant cardiac, endocrinologic, hematologic, hepatic, immunologic, metabolic, urologic, pulmonary, gastrointestinal, dermatologic, psychiatric, and renal, or other major disease, as determined by the Investigator.
• If subject answers 'Yes" to any question on the PML questionnaire that is not resolved prior to infusion as per standard operating procedure for natalizumab infusion.

Where it is running

• Rocky Mountain Multiple Sclerosis Clinic — Salt Lake City, Utah, United States

Full record on ClinicalTrials.gov

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