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Prognostic Significance of Overexpressed p16INK4a in Patients with Cervical Cancer: A Meta-Analysis

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  • Jiaying Lin
  • Andreas E Albers
  • Jinbao Qin
  • Andreas M Kaufmann

Abstract

Background: p16INK4a is a tumor suppressor protein which is induced in cells upon the interaction of high-risk HPV E7 with the retinoblastoma protein by a positive feedback loop, but cannot exert its suppressing effect. Previous reports suggested that p16INK4a immunostaining allows precise identification of even small CIN or cervical cancer lesions in biopsies. The prognostic value of overexpressed p16INK4a in cervical cancer has been evaluated for several years while the results remain controversial. We performed a systematic review and meta-analysis of studies assessing the clinical and prognostic significance of overexpression of p16INK4a in cervical cancer. Methods: Identification and review of publications assessing clinical or prognostic significance of p16INK4a overexpression in cervical cancer until March 1, 2014. A meta-analysis was performed to clarify the association between p16INK4a overexpression and clinical outcomes. Results: A total of 15 publications met the criteria and comprised 1633 cases. Analysis of these data showed that p16INK4a overexpression was not significantly associated with tumor TNM staging (I+II vs. III+IV) (OR = 0.75, 95% confidence interval [CI]: 0.35–1.63, P = 0.47), the tumor grade (G1+ G2 vs. G3) (OR = 0.78, 95% CI: 0.39–1.57, P = 0.49), the tumor size (

Suggested Citation

  • Jiaying Lin & Andreas E Albers & Jinbao Qin & Andreas M Kaufmann, 2014. "Prognostic Significance of Overexpressed p16INK4a in Patients with Cervical Cancer: A Meta-Analysis," PLOS ONE, Public Library of Science, vol. 9(9), pages 1-7, September.
    • Handle: RePEc:plo:pone00:0106384
    DOI: 10.1371/journal.pone.0106384
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    Cited by:

    1. Hanyu Cao & Si Wang & Zhenyu Zhang & Jiangyan Lou, 2016. "Prognostic Value of Overexpressed p16INK4a in Vulvar Cancer: A Meta-Analysis," PLOS ONE, Public Library of Science, vol. 11(3), pages 1-11, March.

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