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Hematology 2005
© 2005 The American Society of Hematology

Aggressive Peripheral T-Cell Lymphomas (Specified and Unspecified Types)

Kerry J. Savage

Correspondence: Kerry J. Savage, MD, British Columbia Cancer Agency, 600 West 10th Avenue, Vancouver BC V5Z 4E6, Canada; Phone (604) 877-6000, Fax (604) 877-0585, ksavage{at}bccancer.bc.ca

Abstract

Peripheral T-cell lymphomas (PTCLs) are a biologically diverse and uncommon group of diseases. Compared to their B-cell counterparts, PTCLs remain largely unexplored and the optimal treatment ill-defined due to disease rarity and biological heterogeneity. For the majority of PTCL subtypes, prognosis is poor with a 5-year overall survival of approximately 30% in most series.

The notable exception is ALK-positive anaplastic large-cell lymphoma (ALK-pos ALCL), which has a superior outcome. The international prognostic index can be used to some extent to define risk groups within some PTCL subtypes, including PTCL unspecified (PTCLUS). It is likely that the observed clinical heterogeneity reflects differences at the molecular level. With the more widespread availability of gene expression profiling, it may be possible in the future to further refine the classification of PTCLs and elucidate novel therapeutic targets. Future clinical trials are needed that focus specifically on PTCL to advance our understanding and define the optimal management in this disease.


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Copyright © 2005 by the American Society of Hematology.