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Diagnostic Pathology
Published in: Diagnostic Pathology 1/2014

Open Access 01-12-2014 | Research

Decreased expression of microRNA-126 is associated with poor prognosis in patients with cervical cancer

Authors: Yao Yang, Kun-ling Song, Hong Chang, Long Chen

Published in: Diagnostic Pathology | Issue 1/2014

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Abstract

Background

MicroRNA-126(miR-126) has been shown to be frequently down-regulated in a variety of malignancies and act as a potential tumor suppressor. However, its correlations with the clinicopathological characters of cervical cancer remain unclear.

Methods

TaqMan quantitative RT-PCR was used to determine the expression level of miR-126 in tissue samples. The associations of miR-126 expression with clinicopathologic variables were analyzed. Kaplan-Meier survival analysis was performed to analyze the association of miR-126 expression with overall survival (OS) of patients. Univariate and multivariate Cox regression analyses were performed.

Results

miR-126 expression level in human cervical cancer tissues was significantly lower than that in adjacent nontumorous tissues (mean ± SD: 0.59 ± 0.44 vs. 1.00 ± 0.51, P < 0.0001). Decreased miR-126 expression in cervical cancer was found to be significantly associated with lymphatic invasion (P = 0.002), distant metastasis (P < 0.001), FIGO stage (P = 0.009), and histological grade (P = 0.005). Kaplan-Meier analysis showed that patients with lower levels of miR-126 had significantly poorer survival than those with higher expression of this miRNA in patients, with a 5-year OS of 45.7% and 70.9%, respectively (P = 0.002). Multivariate analysis revealed that miR-126 expression (HR = 3.97, 95% CI: 2.01-20.22; P = 0.003) was independently associated with the OS.

Conclusion

Our data suggests the potential of miR-126 as a prognostic biomarker for cervical cancer.

Virtual Slides

The virtual slide(s) for this article can be found here: http://​www.​diagnosticpathol​ogy.​diagnomx.​eu/​vs/​13000_​2014_​220
Appendix
Available only for authorised users
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Metadata
Title
Decreased expression of microRNA-126 is associated with poor prognosis in patients with cervical cancer
Authors
Yao Yang
Kun-ling Song
Hong Chang
Long Chen
Publication date
01-12-2014
Publisher
BioMed Central
Published in
Diagnostic Pathology / Issue 1/2014
Electronic ISSN: 1746-1596
DOI
https://doi.org/10.1186/s13000-014-0220-x

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