During the past 6 years, clinical trials employing alpha-interferon (alpha-IFN) in hairy cell leukemia (HCL) have shown dramatic improvement in the management of this disease. Complete remissions (CR), however, are relatively rare (10-15%) and a minority of patients (10-25%) do not respond adequately to alpha-IFN. The possibility that the poor response to alpha-IFN treatment could be related to a peculiar immunological phenotype of the hairy cell (HC) was investigated in this study. The results demonstrated that, in the majority of patients who failed to respond to alpha-IFN, HC showed an immunological phenotype characterized by positivity with the CD5 monoclonal antibody which is usually absent on HC and characteristically expressed on B-chronic lymphocytic leukemia cells. In fact, among the 10 HCL patients who presented with this phenotype, only 5 partial remissions (PR) and 5 minor responses (MR) were achieved, as opposed to the 3 complete remissions (CR), 19 PR and 3 MR observed in the 25 CD5-negative patients. The possibility that a more extensive immunological analysis of HCL patients at diagnosis may be predictive of the response to IFN treatment is postulated.
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|Titolo:||Relationship between immunological response to alpha-IFN treatment in 35 patients with hairy cell leukemia.|
|Rivista:||EUROPEAN JOURNAL OF HAEMATOLOGY|
|Citazione:||Lauria, F., Zinzani, P.l., Raspadori, D., Foa, R., Buzzi, M., Gugliotta, L., et al. (1990). Relationship between immunological response to alpha-IFN treatment in 35 patients with hairy cell leukemia. EUROPEAN JOURNAL OF HAEMATOLOGY, 45 Suppl 52, 3-6.|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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