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Concentrative nucleoside transporter 3 as a prognostic indicator for favorable outcome of t(8;21)-positive acute myeloid leukemia patients after cytarabine-based chemotherapy

Authors
Song, Ju HanCho, Kyung-MinKim, Hyeoung-JoonKim, Yeo-KyeoungKim, Nan YoungKim, Hee-JeLee, Tae-HyangHwang, Seung YongKim, Tae Sung
Issue Date
7월-2015
Publisher
SPANDIDOS PUBL LTD
Keywords
acute myeloid leukemia; CNT3; cytarabine; t(8; 21) translocation; prognosis
Citation
ONCOLOGY REPORTS, v.34, no.1, pp.488 - 494
Indexed
SCIE
SCOPUS
Journal Title
ONCOLOGY REPORTS
Volume
34
Number
1
Start Page
488
End Page
494
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/93120
DOI
10.3892/or.2015.3959
ISSN
1021-335X
Abstract
Although acute myeloid leukemia (AML) exhibits diverse responses to chemotherapy, patients harboring the 48;21) translocation are part of a favorable risk group. However, the reason why this subgroup is more responsive to cytarabine-based therapy has not been elucidated. In the present study, we analyzed expression levels of cytarabine metabolism-related genes in patients diagnosed with AML with or without t(8;21) and investigated their correlation with clinical outcomes after cytarabine-based therapy. Among the 8 genes studied, expression of the concentrative nucleoside transporter 3 (CNT3) gene was significantly higher in t(8;21)positive patients compared to the others in the test population and the validation cohort (P<0.001 in Mann-Whitney U test; P<0.002 in Pearson's correlation analysis). Additionally, in both multivariate and univariate analyses, t(8;21)-positive patients categorized in a higher CNT3 expression tertile had longer disease-free survival [hazard ratio (HR), 0.117; 95% confidence interval (CI), 0.025-0.557; P=0.008] and overall survival (HR, 0.062; 95% CI, 0.007-0.521; P=0.010) compared to t(8;21)-positive patients in a lower CNT3 expression tertile. Notably, these trends did not occur in t(8;21)-negative patients. Our results demonstrate that CNT3 expression is associated with overall favorable outcomes and is predictive of clinical outcomes in AML patients with t(8;21). This suggests that CNT3 expression can be used to optimize treatment strategies for AML patients.
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