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Blood, 1 June 2001, Vol. 97, No. 11, pp. 3648-3650

BRIEF REPORT

Expression of nuclear transcription factor interferon consensus sequence binding protein in chronic myeloid leukemia correlates with pretreatment risk features and cytogenetic response to interferon-alpha

Manuel Schmidt, Andreas Hochhaus, Andreas Nitsche, Rüdiger Hehlmann, and Andreas Neubauer

From the Klinikum der Philipps-Universität Marburg, Zentrum Innere Medizin, Abteilung Hämatologie/Onkologie/Immunologie, Marburg, Germany; III. Medizinische Universitätsklinik, Klinikum Mannheim der Universität Heidelberg, Germany; and Klinik für Innere Medizin m.S. Hamatologie und Onkologie, Charité-Campus Virchow Klinikum, Humboldt Universität, Berlin, Germany.

Recently, it was shown that interferon consensus sequence binding protein (ICSBP), a member of the interferon regulatory factor (IRF) family, has a potential role in chronic myeloid leukemia (CML). Deletion of ICSBP gene in mice leads to a CML-like syndrome and samples from CML patients exhibited impaired ICSBP expression. The present study found that ICSBP expression correlated with risk features determined by Sokal score in untreated CML (P = .007 for high versus low risk). In addition, analyzing ICSBP expression during interferon-alpha (IFN-alpha ) therapy in "good" (n = 27) versus "poor" (n = 15) cytogenetic responders, high ICSBP levels were only observed in "good" responders (P = .0002). Together, these data suggest that ICSBP levels are related to initial presentation of CML and the therapeutic response of CML to IFN-alpha , indicating an important role of ICSBP in CML.

© 2001 by The American Society of Hematology.
 

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