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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

Schmidt, M.; Hochhaus, A.; Nitsche, A.; Hehlmann, R.; Neubauer, A.

Blood 97(11): 3648-3650

2001


ISSN/ISBN: 0006-4971
PMID: 11369663
Accession: 010642416

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. (Blood. 2001;97:3648-3650)

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