The Wilms tumor suppressor gene (WT1) is overexpressed in a number of human hematological malignancies, including chronic myeloid leukemia (CML). Although at present, the biological significance of WT1 expression in CML in still unclear, this marker could represent a useful tool for molecular monitoring of CML patients prior to and post imatinib therapy. In fact, the use of real-time polymerase chaine reaction (PCR) to quantitatively measure the WT1 transcript amount may be a predictor of patient response to imatinib therapy.
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