Σφακιανάκης Αλέξανδρος
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Τρίτη 9 Ιανουαρίου 2018

Overexpression of CTNNB1: Clinical implication in Chinese de novo acute myeloid leukemia

Publication date: Available online 9 January 2018
Source:Pathology - Research and Practice
Author(s): Xi-xi Li, Hong Guo, Jing-dong Zhou, De-hong Wu, Ji-chun Ma, Xiang-mei Wen, Wei Zhang, Zi-jun Xu, Jiang Lin, Jun Qian
CTNNB1 expression has been identified in numerous solid tumors. The present study was designed to determine CTNNB1 expression and its clinical significance in Chinese de novo acute myeloid leukemia (AML) patients. Real-time quantitative PCR was carried out to detect the pattern of CTNNB1 expression in 140 AML patients and 46 controls. The level of CTNNB1 transcript in AML patients was significantly up-regulated compared with controls (P < 0.001). CTNNB1high patients showed significantly older age than CTNNB1low patients (P < 0.05). The frequency of high CTNNB1 expression was significantly observed in patients with intermediate/poor karyotypes. CTNNB1high patients had a significantly lower complete remission (CR) rate than CTNNB1low patients (P = 0.004). Among cytogenetically normal AML (CN-AML), CTNNB1high patients presented significantly shorter overall survival (OS, P = 0.004) and leukemia-free survival (LFS, P = 0.038) than CTNNB1low patients. Multivariate analysis confirmed that CTNNB1 expression was an independent prognostic factor in affecting OS among CN-AML. Moreover, our study revealed that CTNNB1 level significantly decreased after CR in 59 AML patients (P = 0.032) and increased in 28 relapsed AML patients (P = 0.015). Our findings suggest that Wnt/β-catenin is overexpressed and confers a poor prognosis in AML, and could be used in the monitoring of CN-AML.



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