Comparing the performance of FAM19A4 methylation analysis, cytology and HPV16/18 genotyping for the detection of cervical (pre)cancer in high-risk HPV-positive women of a gynecologic outpatient population (COMETH study)

Int J Cancer. 2016 Feb 15;138(4):992-1002. doi: 10.1002/ijc.29824. Epub 2015 Sep 14.

Abstract

Recently, DNA methylation analysis of FAM19A4 in cervical scrapes has been shown to adequately detect high-grade cervical intraepithelial neoplasia and cervical cancer (≥ CIN3) in high-risk HPV (hrHPV)-positive women. Here, we compared the clinical performance of FAM19A4 methylation analysis to cytology and HPV16/18 genotyping, separately and in combination, for ≥ CIN3 detection in hrHPV-positive women participating in a prospective observational multi-center cohort study. The study population comprised hrHPV-positive women aged 18-66 years, visiting a gynecological outpatient clinic. From these women, cervical scrapes and colposcopy-directed biopsies (for histological confirmation) were obtained. Cervical scrapes were analyzed for FAM19A4 gene promoter methylation, cytology and HPV16/18 genotyping. Methylation analysis was performed by quantitative methylation-specific PCR (qMSP). Sensitivities and specificities for ≥ CIN3 were compared between tests. Stratified analyses were performed for variables that potentially influence marker performance. Of all 508 hrHPV-positive women, the sensitivities for ≥ CIN3 of cytology, FAM19A4 methylation analysis, and cytology combined with HPV16/18 genotyping were 85.6, 75.6 and 92.2%, respectively, with corresponding specificities of 49.8, 71.1 and 29.4%, respectively. Both sensitivity and specificity of FAM19A4 methylation analysis were associated with age (p ≤ 0.001 each). In women ≥ 30 years (n = 287), ≥ CIN3 sensitivity of FAM19A4 methylation analysis was 88.3% (95%CI: 80.2-96.5) which was noninferior to that of cytology [85.5% (95%CI: 76.0-94.0)], at a significantly higher specificity [62.1% (95%CI: 55.8-68.4) compared to 47.6% (95%CI: 41.1-54.1)]. In conclusion, among hrHPV-positive women from an outpatient population aged ≥ 30 years, methylation analysis of FAM19A4 is an attractive marker for the identification of women with ≥ CIN3.

Keywords: DNA methylation; cervical cancer; cervical intraepithelial neoplasia; cervical scrapes; human papillomavirus; qMSP.

Publication types

  • Comparative Study
  • Multicenter Study
  • Observational Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Biomarkers, Tumor / genetics*
  • Cervical Intraepithelial Neoplasia / diagnosis*
  • Cervical Intraepithelial Neoplasia / genetics
  • Cervical Intraepithelial Neoplasia / virology
  • Chemokines / genetics*
  • Cohort Studies
  • Cytokines / genetics*
  • DNA Methylation / genetics*
  • Female
  • Genotype
  • Human papillomavirus 16 / genetics*
  • Human papillomavirus 18 / genetics*
  • Humans
  • Middle Aged
  • Odds Ratio
  • Outpatients
  • Papillomavirus Infections / complications
  • Risk Factors
  • Sensitivity and Specificity
  • Uterine Cervical Neoplasms / diagnosis*
  • Uterine Cervical Neoplasms / genetics
  • Uterine Cervical Neoplasms / virology
  • Vaginal Smears

Substances

  • Biomarkers, Tumor
  • Chemokines
  • Cytokines
  • TAFA4 protein, human