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Key Record Dates Identifier: NCT01211639
Brief Title: Genetic Evaluation of Natalizumab-Treated Patients With Progressive Multifocal Leukoencephalopathy

First Submitted : September 16, 2010
First Submitted that Met QC Criteria : September 28, 2010
First Posted : September 29, 2010 (Estimate)

Last Update Submitted that Met QC Criteria : January 15, 2015
Last Update Posted : January 19, 2015 (Estimate)