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Abstract
Introduction: Insights into the role of the tumor microenvironment and of immune dysfunction in chronic lymphocytic leukemia (CLL) have opened the way for further augmenting the therapeutic armamentarium for CLL patients. In this respect, lenalidomide represents an exciting drug since it is able to eliminate CLL cells without immunosuppression.
Areas covered: Mechanism of action and clinical trials of lenalidomide in CLL, and suggestions for its future utilization are reviewed. The most relevant papers and the meeting abstracts published up to July 2010 were used as sources for this review. This review will help readers understand the mechanism of action of lenalidomide and will provide a comprehensive summary regarding efficacy and safety of this drug in CLL patients.
Expert opinion: Lenalidomide shows good activity against CLL. However, the toxicity profile is significant and can result in serious and potentially life-threatening side effects. Definitive data from ongoing trials will aid better definition of its status in CLL therapy. Moreover, clarification of the exact mechanism(s) of action in CLL will allow more precise use of lenalidomide and design of more efficacious combination therapies.
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Acknowledgements
This work was in part supported by the Associazione Italiana Ricerca sul Cancro (AIRC) RG no. 6432 to F Morabito supported by CARICAL, Fondazione A. Scorza e Provincia di Cosenza. The authors thank B Gulino for precious secretarial assistance.