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Published in: Archives of Gynecology and Obstetrics 3/2017

01-03-2017 | Gynecologic Oncology

Increased expression of miR-15b is associated with clinicopathological features and poor prognosis in cervical carcinoma

Authors: Fang Wen, Jia-Zhen Xu, Xian-Rong Wang

Published in: Archives of Gynecology and Obstetrics | Issue 3/2017

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Abstract

Objective

The aims of this study were to explore the expression of microRNA-15b (miR-15b) in cervical carcinoma and to correlate its expression with clinicopathological characteristics and prognosis.

Methods

Quantitative reverse transcriptase polymerase chain reaction analysis was conducted to quantify the expression level of miR-15b in 607 cervical tissues, including 185 cervical carcinoma tissues, 124 CIN I lesions, 148 CIN II-III lesions, and 150 normal cervical tissues. The 5-year overall cumulative survival rates for all patients with cervical carcinoma were calculated using Kaplan–Meier survival analysis, and multivariate survival analysis of these patients was completed using the stepwise Cox proportional hazards regression model.

Results

The expression of miR-15b gradually increased from normal cervical tissues to CIN lesions and then to cervical carcinoma tissues (all P < 0.05), and it was strongly correlated with degree of differentiation, clinical stage, tumor diameter, and lymph-node metastases (all P < 0.05). When the median value of miR-15b expression was used as the cut-off point, patients with high miR-15b expression (above the median) had worse 5-year overall cumulative survival rates than those who exhibited low miR-15b expression (below the median; P < 0.05). Multivariate analysis using the Cox regression model identified miR-15b expression, clinical stage, tumor diameter, and lymph-node metastasis as independent risk factors for cervical carcinoma prognosis (all P < 0.05).

Conclusion

Our results indicate that elevated miRNA-15b expression is a typical feature in cervical carcinoma, which could be a useful clinical predictor for the early diagnosis and evaluation of cervical carcinoma prognosis.
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Metadata
Title
Increased expression of miR-15b is associated with clinicopathological features and poor prognosis in cervical carcinoma
Authors
Fang Wen
Jia-Zhen Xu
Xian-Rong Wang
Publication date
01-03-2017
Publisher
Springer Berlin Heidelberg
Published in
Archives of Gynecology and Obstetrics / Issue 3/2017
Print ISSN: 0932-0067
Electronic ISSN: 1432-0711
DOI
https://doi.org/10.1007/s00404-016-4286-4

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