Influence of Human Papillomavirus Infection on the Natural History of Cervical Intraepithelial Neoplasia 1: A Meta-Analysis

Biomed Res Int. 2017:2017:8971059. doi: 10.1155/2017/8971059. Epub 2017 Jul 24.

Abstract

Objective: To provide a scientific basis for the prevention and treatment of cervical intraepithelial neoplasia grade 1 (CIN1). This study evaluated the impact of human papillomavirus (HPV) infection on the natural history of CIN1.

Methods: Electronic databases of Cochrane Library, EMBASE, PubMed, CNKI, CBM, and Wanfang were searched in April 2016. The eligibility criteria were documented by Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). We used the Newcastle-Ottawa scale (NOS) to assess study quality.

Results: Thirty-eight studies out of 3,246 identified papers were eligible for inclusion. The risk of CIN1 progression (relative risk [RR]: 3.04; 95% confidence interval [CI]: 2.41-3.83; P < 0.00001) and persistence (RR: 1.48; 95% CI: 1.17-1.87; P = 0.001) was higher in the HPV-positive group than HPV-negative group. Specifically, the risk of CIN1 progression (RR: 13.91; 95% CI: 3.46-55.90; P = 0.000) was higher among persistent high-risk HPV-positive patients and the ratio of CIN1 regression (RR: 0.65; 95% CI: 0.59-0.71; P < 0.00001) was lower in the HPV-positive group than HPV-negative group.

Conclusion: HPV infection resulted in an increased risk of CIN1 progression and decreased disease reversibility. Persistent high-risk HPV infection resulted in a further increased risk of CIN1 progression.

Publication types

  • Meta-Analysis
  • Review

MeSH terms

  • Adult
  • Disease Progression
  • Female
  • Humans
  • Middle Aged
  • Papillomaviridae / pathogenicity*
  • Papillomavirus Infections / pathology*
  • Papillomavirus Infections / prevention & control
  • Papillomavirus Infections / therapy
  • Papillomavirus Infections / virology
  • Risk Factors
  • Uterine Cervical Dysplasia / pathology*
  • Uterine Cervical Dysplasia / prevention & control
  • Uterine Cervical Dysplasia / therapy
  • Uterine Cervical Dysplasia / virology