Efficacy of alemtuzumab treatment for refractory T-cell large granular lymphocytic leukemia

Abstract
Alemtuzumab is a humanized monoclonal antibody directed against the CD52 antigen expressed on all lymphocytes: T cells more than B cells and monocytes.5,6 Alemtuzumab is approved for use in chronic lymphocytic leukemia and is being evaluated in the treatment of other hematologic malignancies as well as autoimmune diseases. The potential efficacy of alemtuzumab in treatment of T-LGL has not been described previously. Herein, we describe a patient with CD52+ T-LGL who, after failing multiple treatment modalities, achieved long-term disease control with alemtuzumab.