Viral load as a predictor of the risk of cervical intraepithelial neoplasia

Nicolas F. Schlecht, Andrea Trevisan, Eliane Duarte-Franco, Thomas E. Rohan, Alex Ferenczy, Luisa L. Villa, Eduardo L. Franco

Research output: Contribution to journalArticle

123 Citations (Scopus)

Abstract

HPV infections are believed to be a necessary cause of cervical cancer. Viral burden, as a surrogate indicator for persistence, may help predict risk of subsequent SIL. We used results of HPV test and cytology data repeated every 4-6 months in 2,081 women participating in a longitudinal study of the natural history of HPV infection and cervical neoplasia in São Paulo, Brazil. Using the MY09/11 PCR protocol, 473 women were positive for HPV DNA during the first 2 visits. We retested all positive specimens by a quantitative, low-stringency PCR method to measure viral burden in cervical cells. Mean viral loads and 95% CIs were calculated using log-transformed data. RRs and 95% CIs of incident SIL were calculated by proportional hazards models, adjusting for age and HPV oncogenicity. The risk of incident lesions increased with viral load at enrollment. The mean number of viral copies/cell at enrollment was 2.6 for women with no incident lesions and increased (trend p = 0.003) to 15.1 for women developing 3 or more SIL events over 6 years of follow-up. Compared to those with < 1 copy per cell in specimens tested during the first 2 visits, RRs for incident SIL increased from 1.9 (95% CI 0.8-4.2) for those with 1-10 copies/cell to 4.5 (95% CI 1.9-10.7) for those with > 1,000 copies/cell. The equivalent RR of HSIL for > 1,000 copies/cell was 2.6 (95% CI 0.5-13.2). Viral burden appears to have an independent effect on SIL incidence. Measurement of viral load, as a surrogate for HPV persistence, may identify women at risk of developing cervical cancer precursors.

Original languageEnglish (US)
Pages (from-to)519-524
Number of pages6
JournalInternational Journal of Cancer
Volume103
Issue number4
DOIs
StatePublished - Feb 10 2003

Fingerprint

Cervical Intraepithelial Neoplasia
Viral Load
Uterine Cervical Neoplasms
Polymerase Chain Reaction
Infection
Natural History
Proportional Hazards Models
Brazil
Longitudinal Studies
Cell Biology
DNA
Incidence
Neoplasms

Keywords

  • Cohort study
  • Human papillomavirus
  • Longitudinal analysis
  • Survical neoplasia
  • Viral load

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Schlecht, N. F., Trevisan, A., Duarte-Franco, E., Rohan, T. E., Ferenczy, A., Villa, L. L., & Franco, E. L. (2003). Viral load as a predictor of the risk of cervical intraepithelial neoplasia. International Journal of Cancer, 103(4), 519-524. https://doi.org/10.1002/ijc.10846

Viral load as a predictor of the risk of cervical intraepithelial neoplasia. / Schlecht, Nicolas F.; Trevisan, Andrea; Duarte-Franco, Eliane; Rohan, Thomas E.; Ferenczy, Alex; Villa, Luisa L.; Franco, Eduardo L.

In: International Journal of Cancer, Vol. 103, No. 4, 10.02.2003, p. 519-524.

Research output: Contribution to journalArticle

Schlecht, NF, Trevisan, A, Duarte-Franco, E, Rohan, TE, Ferenczy, A, Villa, LL & Franco, EL 2003, 'Viral load as a predictor of the risk of cervical intraepithelial neoplasia', International Journal of Cancer, vol. 103, no. 4, pp. 519-524. https://doi.org/10.1002/ijc.10846
Schlecht NF, Trevisan A, Duarte-Franco E, Rohan TE, Ferenczy A, Villa LL et al. Viral load as a predictor of the risk of cervical intraepithelial neoplasia. International Journal of Cancer. 2003 Feb 10;103(4):519-524. https://doi.org/10.1002/ijc.10846
Schlecht, Nicolas F. ; Trevisan, Andrea ; Duarte-Franco, Eliane ; Rohan, Thomas E. ; Ferenczy, Alex ; Villa, Luisa L. ; Franco, Eduardo L. / Viral load as a predictor of the risk of cervical intraepithelial neoplasia. In: International Journal of Cancer. 2003 ; Vol. 103, No. 4. pp. 519-524.
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