Extended Follow-Up of Patients With Hairy Cell Leukemia After Treatment With Cladribine
2003
Purpose: Hairy cell leukemia (HCL) is an uncommon, indolent, chronic B-cell lymphoproliferative disorder involving the marrow and spleen. Therapy for HCL includes splenectomy, interferon alfa-2a and alfa-2b, pentostatin, and cladribine. The purpose of this article was to report the extended follow-up of HCL patients treated with cladribine. Patients and Methods: Two hundred nine patients with HCL who were treated with cladribine had at least 7 years of follow-up. A course of cladribine constituted a 7-day continuous intravenous infusion at a dose of 0.1 mg/kg/d. Results: Of the 207 assessable patients who had at least 7 years of follow-up, 196 (95%) achieved a complete response (CR) and 11 (5%) achieved a partial response (PR) after a single course of cladribine (overall response rate, 100%). The median first-response duration for all responders was 98 months. Seventy-six patients (37%) experienced relapse after their first course of cladribine. The median time to first relapse for all responders was 42 m...
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