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From the Departments of Neurology and the Rudolf Magnus Institute for Neuroscience (J.M.F.N., M.E., J.H.J.W. N.C.N.), Clinical Neurophysiology (H.F.), and Hematology (H.L., R.F.), University Medical Center Utrecht, the Netherlands.
Address correspondence and reprint requests to J.M.F. Niermeijer, MD, Department of Neurology and Neurosurgery, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, the Netherlands; e-mail: J.M.F.Niermeijer{at}umcutrecht.nl
We studied the efficacy of fludarabine in 16 patients with immunoglobulin M monoclonal gammopathy of unknown significance polyneuropathy in a prospective uncontrolled trial. The modified Rankin scale improved in 5/16 patients, all of whom had a demyelinating polyneuropathy. The motor conduction velocity improved by more than 10% in two or more nerves for four of five of these patients. Hematologic response in bone marrow occurred in three of five of these patients, whereas two of five already had small polyclonal B cell populations. There were no serious side effects.
Additional material related to this article can be found on the Neurology Web site. Go to www.neurology.org and scroll down the Table of Contents for the December 12 issue to find the title link for this article.
Disclosure: The authors report no conflicts of interest.
Presented in part at the Annual Meeting of the European Neurological Society in Barcelona, Spain, July 2004.
Received November 29, 2005. Accepted in final form August 22, 2006.
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