ArticleClinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico2019
The clinical significance of the alternative Wilms tumor gene overexpression-hypermethylation signature in acute myeloid leukemia.
Article in Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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- [Expression ofZhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2019Article
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4 authors at 1 institution in 1 country.
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Abstract
backgroundWilms tumor 1 (WT1) gene is overexpressed in numerous cancers, including acute myeloid leukemia (AML). The alternative WT1 gene (AWT1) is generated from alternative transcription start site in the WT1 first intron and encodes an N-terminal-truncated protein lacking the repressor domain. Although WT1 overexpression is a common feature in AML, the expression levels of the AWT1 and its underlying epigenetic alterations, as well as their clinical relevance in AML remain unknown.
methodsQuantitative assessment of AWT1 gene transcripts was performed using real-time polymerase chain reaction (PCR). Bisulfite PCR followed by pyrosequencing was done to determine the methylation status of the AWT1 promoter. The bone marrow samples were collected at diagnosis and after completion of induction chemotherapy from 80 newly diagnosed AML patients. Forty non-malignant BM samples were recruited as controls.
resultsThe AWT1 was significantly overexpressed in AML patients. Robust hypermethylation of the AWT1 promoter was found to be a highly specific and sensitive marker for AML (p < 0.001). Significant positive correlations between the AWT1 expression and methylation levels with BM blast counts at both initial diagnosis and after induction therapy were observed (p < 0.001). AWT1 overexpression at the initial diagnosis of AML was found to be an independent negative factor for complete remission response after induction therapy (p = 0.014).
conclusionThe AWT1 gene overexpression-hypermethylation signature is a characteristic marker that positively correlates with the leukemic burden in AML. AWT1 overexpression at AML diagnosis is an independent negative predictor for CR after induction chemotherapy.
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