Absence of prolonged benefit of initial leukapheresis therapy for hairy cell leukemia

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Abstract
Four patients with the leukemic phase of hairy cell leukemia were treated with leukapheresis. Two patients failed to respond, and the other two had only transient responses; hematologic improvement lasted one month in one case and four months in the second. The patient with a four‐month response underwent a second series of leukapheresis resulting in a response lasting at least 8 months. Two of the four patients subsequently had an adequate trial of prolonged chlorambucil therapy and continued to have a clinical response. We conclude that leukapheresis has little to offer to the majority of hairy cell patients for the long‐term management of post‐splenectomy patients who develop the leukemic phase. However, an occasional patient can have a transient, and even, rarely, a prolonged response.