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  • Title: Chronic lymphocytic leukemia-associated immune thrombocytopenia treated with rituximab: a retrospective study of 21 patients.
    Author: D'Arena G, Capalbo S, Laurenti L, Del Poeta G, Nunziata G, Deaglio S, Spinosa G, Tarnani M, De Padua L, Califano C, Ferrara F, Cascavilla N.
    Journal: Eur J Haematol; 2010 Dec; 85(6):502-7. PubMed ID: 20846302.
    Abstract:
    INTRODUCTION: There are no standard therapies for chronic lymphocytic leukemia (CLL)-associated immune thrombocytopenia (IT) so far. PATIENTS AND METHODS: We report the results of therapy with single agent rituximab in 21 patients with CLL-associated IT. The mean age at CLL and IT diagnosis was 64 and 68 yr, respectively. IT developed at a mean time of 44 months from the diagnosis of CLL. In four cases, IT was diagnosed at the same time as CLL. For three patients, IT was considered fludarabine-related and two patients showed autoimmune hemolysis also. All patients but one received steroids as first-line treatment for IT. Some patients received intravenous high-dose Ig, vincristine, and Cytoxan also, without beneficial effect. After a mean time of 43 d from the diagnosis of IT, all patients were scheduled to receive rituximab at a dosage of 375 mg/mq/weekly. RESULTS: Eighteen (86%) patients completed the scheduled four cycles of rituximab. Irrelevant first infusion side effects were seen only in one patient. Twelve (57%) patients showed a complete response (CR), six (29%) patients a partial response (PR), and three (14%) patients did not respond. In responding patients, the mean duration of response was 21 months (4-49 months). At a mean follow-up of 28 months, 14 (66%) patients were still alive, 10 (48%) of them in CR and three (14%) in PR. CONCLUSIONS: This retrospective analysis prove that rituximab is an effective and well-tolerated alternative treatment for CLL-associated IT.
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