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J Neurol Sci. 2013 Jan 15;324(1-2):190-4. doi: 10.1016/j.jns.2012.11.004. Epub 2012 Nov 22.

Failure of mefloquine therapy in progressive multifocal leukoencephalopathy: report of two Japanese patients without human immunodeficiency virus infection.

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  • 1Department of Neurology, JA Toride Medical Center, Ibaraki, Japan. zen@bg7.so-net.ne.jp

Abstract

Although progressive multifocal leukoencephalopathy (PML) cases showing responses to mefloquine therapy have been reported, the efficacy of mefloquine for PML remains unclear. We report on the failure of mefloquine therapy in two Japanese patients with PML unrelated to human immunodeficiency virus. One of the patients was a 47-year-old male who had been treated with chemotherapy for Waldenström macroglobulinemia, and the other was an 81-year-old male with idiopathic CD4(+) lymphocytopenia. Diagnosis of PML was established based on MRI findings and increased JC virus DNA in the cerebrospinal fluid in both patients. Mefloquine was initiated about 5 months and 2 months after the onset of PML, respectively. During mefloquine therapy, clinical and radiological progression was observed, and JC virus DNA in the cerebrospinal fluid was increased in both patients. Both patients died about 4 months and 2 months after initiation of mefloquine, respectively. Further studies are necessary to clarify the differences between mefloquine responders and non-responders in PML.

Copyright © 2012 Elsevier B.V. All rights reserved.

PMID:
23182496
[PubMed - indexed for MEDLINE]
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