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Leuk Res. 2011 May;35(5):598-603. doi: 10.1016/j.leukres.2010.12.006. Epub 2011 Jan 15.

BCR-ABL1 mutations in patients with imatinib-resistant Philadelphia chromosome-positive leukemia by use of the PCR-Invader assay.

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  • 1Cancer Education and Research Center, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan. takaono@hama-med.ac.jp

Abstract

BCR-ABL1 kinase domain mutations were evaluated in 60 imatinib-resistant patients with Philadelphia-positive (Ph(+)) leukemia using PCR-Invader assay and direct sequencing. In chronic myelogenous leukemia (CML)--chronic phase (CP), 5 had P-loop mutations and 3 had T315I mutations. CML-CP patients with high Sokal score showed significantly higher incidence of mutations. P-loop mutations were associated with higher risk of disease progression. In CML-advanced phase, P-loop mutations and T315I mutation were associated with significantly shorter survival. In Ph(+) acute lymphoblastic leukemia, overall survival was poor irrespective of mutational status. The PCR-Invader assay is useful for screening of mutations and prediction of prognosis.

Copyright © 2010 Elsevier Ltd. All rights reserved.

PMID:
21239056
[PubMed - indexed for MEDLINE]
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