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Blood, 15 October 2009, Vol. 114, No. 16, pp. 3382-3391. Prepublished online as a Blood First Edition Paper on July 15, 2009; DOI 10.1182/blood-2009-02-206185.
CLINICAL TRIALS AND OBSERVATIONS First-line therapy with fludarabine compared with chlorambucil does not result in a major benefit for elderly patients with advanced chronic lymphocytic leukemia1 Department I of Internal Medicine, Centre of Integrated Oncology Köln Bonn, University of Cologne, Cologne; 2 Institute of Medical Statistics and Epidemiology, Technical University, Munich; 3 Department of Internal Medicine III, University of Ulm, Ulm; 4 Private practice, Kronach; 5 Department of Internal Medicine III, University of Munich, Munich; 6 Department of Internal Medicine II, University of Schleswig-Holstein, Kiel; 7 Department of Internal Medicine, University of Saarland, Homburg; 8 Private practice, Halle; 9 Private practice, Kassel; 10 Private practice, Worms; 11 Department of Hematology, University of Duisburg-Essen, Essen; and 12 Department of Internal Medicine Innenstadt, Ludwig-Maximilians-University of Munich, Munich, Germany Although chronic lymphocytic leukemia (CLL) is a disease of elderly patients, subjects older than 65 years are heavily underrepresented in clinical trials. The German CLL study group (GCLLSG) initiated a multicenter phase III trial for CLL patients older than 65 years comparing first-line therapy with fludarabine with chlorambucil. A total of 193 patients with a median age of 70 years were randomized to receive fludarabine (25 mg/m2 for 5 days intravenously, every 28 days, for 6 courses) or chlorambucil (0.4 mg/kg body weight [BW] with an increase to 0.8 mg/kg, every 15 days, for 12 months). Fludarabine resulted in a significantly higher overall and complete remission rate (72% vs 51%, P = .003; 7% vs 0%, P = .011). Time to treatment failure was significantly shorter in the chlorambucil arm (11 vs 18 months; P = .004), but no difference in progression-free survival time was observed (19 months with fludarabine, 18 months with chlorambucil; P = .7). Moreover, fludarabine did not increase the overall survival time (46 months in the fludarabine vs 64 months in the chlorambucil arm; P = .15). Taken together, the results suggest that in elderly CLL patients the first-line therapy with fludarabine alone does not result in a major clinical benefit compared with chlorambucil. This trial is registered with www.isrctn.org under identifier ISRCTN 36294212.
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