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  • Title: Pentostatin in refractory chronic lymphocytic leukemia: a phase II trial of the European Organization for Research and Treatment of Cancer.
    Author: Ho AD, Thaler J, Stryckmans P, Coiffier B, Luciani M, Sonneveld P, Lechner K, Rodenhuis S, Peetermans ME, deCataldo F.
    Journal: J Natl Cancer Inst; 1990 Sep 05; 82(17):1416-20. PubMed ID: 2388293.
    Abstract:
    Pentostatin was used to treat 26 patients with advanced B-cell chronic lymphocytic leukemia resistant to conventional treatment. Twenty patients had progressive disease on previous regimens and six had had partial remission and then relapsed 3-34 months after previous chemotherapy. Eleven patients had previously been treated with three different regimens. 10 had been treated with two regimens, and five had been treated with one regimen. Pentostatin was administered at a dosage of 4 mg/m2 weekly for 3 weeks, then 4 mg/m2 every other week for 6 weeks and once a month for 6 months. Seven of 26 assessable patients (27%) achieved partial remission and five (19%) achieved clinical improvement. The median duration of partial remission until relapse or death was 210 days. Myelosuppression was minor and transient in responsive patients, indicating some degree of selective effect on lymphocytes. Except for one patient who died of cerebral hemorrhage during the first 6 weeks of treatment, no drug-related deaths were registered. Major toxic effects included nausea in 17 patients (mainly grade 1), infections in 15, and liver enzyme elevations in five. Thus, pentostatin is active, even in patients with advanced B-cell chronic lymphocytic leukemia that is refractory to multiple chemotherapy regimens. Response can be achieved with mild myelosuppression.
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