1. Decreased expression of microRNA-126 is associated with poor prognosis in patients with cervical cancer.
- Author
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Yang Y, Song KL, Chang H, and Chen L
- Subjects
- Aged, Down-Regulation, Female, Gene Expression Regulation, Neoplastic, Humans, Kaplan-Meier Estimate, Middle Aged, Multivariate Analysis, Neoplasm Grading, Neoplasm Invasiveness, Neoplasm Staging, Polymerase Chain Reaction, Predictive Value of Tests, Proportional Hazards Models, Risk Factors, Uterine Cervical Neoplasms mortality, Uterine Cervical Neoplasms pathology, Biomarkers, Tumor genetics, MicroRNAs genetics, Uterine Cervical Neoplasms genetics
- 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.diagnosticpathology.diagnomx.eu/vs/13000_2014_220.
- Published
- 2014
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