Genetic Evaluation of Natalizumab-Treated Patients With Progressive Multifocal Leukoencephalopathy



Status:Recruiting
Conditions:Neurology
Therapuetic Areas:Neurology
Healthy:No
Age Range:18 - Any
Updated:2/7/2015
Start Date:October 2010
Contact:Biogen-Idec Investigator
Email:neurologyclinicaltrials@biogenidec.com

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The purpose of this study is to explore host genetic mutations which may render individual
subjects more susceptible (or resistant) to developing Progressive Multifocal
Leukoencephalopathy (PML). Samples will also be collected to determine Deoxyribonucleic Acid
(DNA) sequence of JC Virus (JCV). Analysis of the JC Virus (JCV) genome may provide
information about viral genotypes that may be associated with higher pathogenicity, and help
to identify individuals who may be at higher risk of developing Progressive Multifocal
Leukoencephalopathy (PML) due to chronic infection with a more pathogenic variant of JC
Virus (JCV).

The purpose of this study is to explore host genetic mutations which may render individual
subjects more susceptible (or resistant) to developing Progressive Multifocal
Leukoencephalopathy (PML). Deoxyribonucleic acid (DNA) will be analyzed from
natalizumab-treated subjects who develop Progressive Multifocal Leukoencephalopathy (PML).
The genetic analysis of the subjects will directly seek mutations that could identify
subjects at risk.

Inclusion Criteria:

- Approximately 50 subjects with Multiple Sclerosis (MS) or Crohn's Disease (CD) who
develop Progressive Multifocal Leukoencephalopathy (PML) while receiving natalizumab
treatment
We found this trial at
11
sites
Hastings, Nebraska 68901
1164
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Hastings, NE
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60 Crittenden Blvd # 70
Rochester, New York 14642
(585) 275-2121
University of Rochester The University of Rochester is one of the country's top-tier research universities....
2244
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Rochester, NY
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825
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Aurora, CO
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Bend, Oregon 97701
712
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Bend, OR
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1726
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Chicago, IL
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1880
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from 91732
Cincinnati, OH
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1780
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from 91732
Cullman, AL
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Fort Wayne, Indiana 46805
1852
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Fort Wayne, IN
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1791
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Indianapolis, IN
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2433
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from 91732
New York, NY
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1298
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from 91732
Omaha, NE
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