PMID- 20818792 OWN - NLM STAT- MEDLINE DCOM- 20100924 LR - 20211028 IS - 1531-8249 (Electronic) IS - 0364-5134 (Print) IS - 0364-5134 (Linking) VI - 68 IP - 3 DP - 2010 Sep TI - JC virus persistence following progressive multifocal leukoencephalopathy in multiple sclerosis patients treated with natalizumab. PG - 384-91 LID - 10.1002/ana.22137 [doi] AB - JC virus (JCV) DNA in the cerebrospinal fluid (CSF) provides the laboratory confirmatory diagnosis of progressive multifocal leukoencephalopathy (PML) in patients whose clinical symptoms and magnetic resonance imaging findings are consistent with PML.The Laboratory of Molecular Medicine and Neuroscience (LMMN), National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), made the confirmatory laboratory diagnosis in 35 multiple sclerosis (MS) patients treated with natalizumab. Thirteen patients had 3 or more CSF samples taken from weeks to months following PML diagnosis. Seven of the 13 patients demonstrated persistence of JCV DNA in the CSF even though all patients experienced immune reconstitution inflammatory syndrome (IRIS), 11 patients had plasma exchange, and 2 had immunoabsorption. Specific anti-JCV antibody was measured in plasma/sera samples from 25 of the 35 patients. Most of the samples showed moderate to high or rising antibody levels from the time of PML diagnosis. However, plasma from 1 patient at or near the time of PML diagnosis had a titer considered seronegative and 2 other plasma samples from patients had titers considered at baseline for seropositivity. In several PML cases, viral persistence and neurological deficits have continued for several years, indicating that once initiated, JCV infection may not entirely clear, even with IRIS. FAU - Ryschkewitsch, Caroline F AU - Ryschkewitsch CF AD - Laboratory of Molecular Medicine and Neuroscience, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA. FAU - Jensen, Peter N AU - Jensen PN FAU - Monaco, Maria Chiara AU - Monaco MC FAU - Major, Eugene O AU - Major EO LA - eng GR - Z01 NS001983-37/ImNIH/Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Intramural PL - United States TA - Ann Neurol JT - Annals of neurology JID - 7707449 RN - 0 (Antibodies) RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (DNA, Viral) RN - 0 (Natalizumab) SB - IM CIN - Ann Neurol. 2011 Feb;69(2):429-30; author reply 430-1. PMID: 21246607 MH - Antibodies/blood MH - Antibodies, Monoclonal/*therapeutic use MH - Antibodies, Monoclonal, Humanized MH - DNA Copy Number Variations/physiology MH - DNA, Viral/blood/*cerebrospinal fluid MH - Enzyme-Linked Immunosorbent Assay/methods MH - Female MH - Humans MH - JC Virus/*immunology MH - Leukoencephalopathy, Progressive Multifocal/*drug therapy/*etiology/metabolism/virology MH - Longitudinal Studies MH - Male MH - Multiple Sclerosis/cerebrospinal fluid/*complications/virology MH - Natalizumab PMC - PMC3739486 MID - NIHMS219570 EDAT- 2010/09/08 06:00 MHDA- 2010/09/25 06:00 PMCR- 2013/08/09 CRDT- 2010/09/07 06:00 PHST- 2010/09/07 06:00 [entrez] PHST- 2010/09/08 06:00 [pubmed] PHST- 2010/09/25 06:00 [medline] PHST- 2013/08/09 00:00 [pmc-release] AID - 10.1002/ana.22137 [doi] PST - ppublish SO - Ann Neurol. 2010 Sep;68(3):384-91. doi: 10.1002/ana.22137.