PMID: 16620548Apr 20, 2006Paper

Significance of quantification of WT1 mRNA for monitoring minimal residual disease in acute myeloid leukemia patients

Zhonghua xue ye xue za zhi = Zhonghua xueyexue zazhi
Ya-zhen QinShan-shan Chen

Abstract

To evaluate the significance of quantification of WT1 mRNA for monitoring minimal residual disease (MRD) in patients with acute myeloid leukemia (AML). WT1 mRNA level was detected with real-time quantitative RT-PCR (RQ-PCR) technique in bone marrow samples from 15 normal subjects (NBM) and 123 AML patients. Sixty-two AML samples were also detected AML1-ETO mRNA expression by RQ-PCR. Simultaneously follow-up of WT1 and AML1-ETO levels were carried out in 50 samples from 8 AML patients. WT1 and AML1-ETO levels were normalized by internal control ABL gene. All correlation co-efficiencies were over 0.99 for WT1, AML1-ETO and ABL standard curves. Co-efficiencies of both interassay and intraassay variation were below 4%. The WT1 expression levels in NBM were 0.001 to 0.019 with a median level of 0.008. Higher levels of WT1 expression were found in 61 of 67 (91%) newly diagnosed AML patients compared with NBMs and 37 of the 67 (55.2%) showed 100-fold higher WT1 levels than that in NBMs. WT1 mRNA levels were highest in M(4EO) and M(3) and lowest in M(1) and M(5) patients. There was an excellent correlation between WT1 and AML1-ETO gene expression levels (r = 0.88, P < 0.001). WT1 expression levels in three patients who were in continuo...Continue Reading

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