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Progressive Multifocal Leukoencephalopathy Press Releases

JC Virus - credit Eugene Major, NINDS

NINDS Lab Helps Track a Viral Brain Disease
Friday, Oct 28, 2011
NINDS intramural scientists led by Eugene Major have developed a sensitive laboratory assay to detect JC virus. The test has become an important resource for diagnosing cases of progressive multifocal leukoencephalopathy or PML, a brain disease that is a rare side effect associated with some monoclonal antibody therapies used to treat multiple sclerosis (MS) and other autoimmune disorders.

Evaluation of Patients Treated With Natalizumab Finds No New Cases of Progressive Multifocal Leukoencephalopathy
Wednesday, Mar 1, 2006
An independent clinical and laboratory study of more than 3000 people treated with the drug natalizumab (Tysabri®) for multiple sclerosis (MS), Crohn’s disease, and rheumatoid arthritis has found no evidence of new cases of the often-fatal disorder called progressive multifocal leukoencephalopathy (PML). The laboratory component of the study was coordinated by the National Institute of Neurological Disorders and Stroke (NINDS) at the National Institutes of Health (NIH), working in conjunction with the NIH Clinical Center.

Serotonin Receptor Lets JC Virus Enter Brain Cells
Friday, Jan 14, 2005
Researchers funded in part by the National Institute of Neurological Disorders and Stroke (NINDS) have identified the cellular receptor for the JC virus, which causes the fatal neurological disease progressive multifocal leukoencephalopathy (PML). Generic medicines currently available may be useful in preventing the infection.

Study Detects Brain Virus in HIV-Positive Patients
Tuesday, May 5, 1992
Scientists at the National Institute of Neurological Disorders and Stroke (NINDS) have identified a potentially fatal virus in the bloodstream in half of a small group of HIV-positive patients without neurological symptoms, they announced today at the annual meeting of the American Academy of Neurology in San Diego.