Failure of Cytarabine in Progressive Multifocal Leukoencephalopathy Associated with Human Immunodeficiency Virus Infection
Colin D. Hall, M.B., Ch.B., Urania Dafni, Sc.D., David Simpson, M.D., David Clifford, M.D., Patricia E. Wetherill, M.D., Bruce Cohen, M.D., Justin McArthur, M.B., B.S., M.P.H., Harry Hollander, M.D., Constantin Yainnoutsos, Ph.D., Eugene Major, Ph.D., Linda Millar, B.S., Joseph Timpone, M.D., for The AIDS Clinical Trials Group 243 Team
Background Progressive multifocal leukoencephalopathy affectsabout 4 percent of patients with the acquired immunodeficiencysyndrome (AIDS), and survival after the diagnosis of leukoencephalopathyaverages only about three months. There have been anecdotalreports of improvement but no controlled trials of therapy withantiretroviral treatment plus intravenous or intrathecal cytarabine.
Methods In this multicenter trial, 57 patients with human immunodeficiencyvirus (HIV) infection and biopsy-confirmed progressive multifocalleukoencephalopathy were randomly assigned to receive one ofthree treatments: antiretroviral therapy alone, antiretroviraltherapy plus intravenous cytarabine, or antiretroviral therapyplus intrathecal cytarabine. After a lead-in period of 1 to2 weeks, active treatment was given for 24 weeks. For most patients,antiretroviral therapy consisted of zidovudine plus either didanosineor stavudine.
Results At the time of the last analysis, 14 patients in eachtreatment group had died, and there were no significant differencesin survival among the three groups (P = 0.85 by the log-ranktest). The median survival times (11, 8, and 15 weeks) weresimilar to those in previous studies. Only seven patients completedthe 24 weeks of treatment. Anemia and thrombocytopenia weremore frequent in patients who received antiretroviral therapyin combination with intravenous cytarabine than in the othergroups.
Conclusions Cytarabine administered either intravenously orintrathecally does not improve the prognosis of HIV-infectedpatients with progressive multifocal leukoencephalopathy whoare treated with the antiretroviral agents we used, nor doeshigh-dose antiretroviral therapy alone appear to improve survivalover that reported in untreated patients.
Source Information
From the University of North Carolina at Chapel Hill School of Medicine, Chapel Hill (C.D.H.); Harvard School of Public Health, Boston (U.D., C.Y.); Mount Sinai School of Medicine, New York (D.S.); Washington University School of Medicine, St. Louis (D.C.); Yale University School of Medicine, New Haven, Conn. (P.E.W.); Northwestern University School of Medicine, Chicago (B.C.); the Departments of Neurology and Epidemiology, Johns Hopkins School of Medicine, Baltimore (J.M.); the University of California at San Francisco School of Medicine, San Francisco (H.H.); the National Institute of Neurological Disorders and Stroke, Bethesda, Md. (E.M.); Frontier Science and Technology Research Foundation, Amherst, N.Y. (L.M.); and Washington, D.C., General Hospital, Washington, D.C. (J.T.).
Address reprint requests to Dr. Hall at the Department of Neurology, CB7025, University of North Carolina School of Medicine, Chapel Hill, NC 27599-7025.
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