Long-term risk of cervical intraepithelial neoplasia grade 3 or worse according to high-risk human papillomavirus genotype and semi-quantitative viral load among 33,288 women with normal cervical cytology.
Int J Cancer
; 137(1): 193-203, 2015 Jul 01.
Article
em En
| MEDLINE
| ID: mdl-25471319
ABSTRACT
In this prospective cohort study, we estimated the long-term risk of cervical intraepithelial neoplasia grade 3 or cancer (CIN3+) by high-risk human papillomavirus (hrHPV) genotype and semi-quantitative viral load at baseline among 33,288 women aged 14-90 years with normal baseline cytology. During 2002-2005, residual liquid-based cervical cytology samples were collected from women screened for cervical cancer in Copenhagen, Denmark. Samples were HPV-tested with Hybrid Capture 2 (HC2) and genotyped with INNO-LiPA. Semi-quantitative viral load was measured by HC2 relative light units in women with single hrHPV infections. The cohort was followed in a nationwide pathology register for up to 11.5 years. In women aged ≥30 years at baseline, the 8-year absolute risk for CIN3+ following baseline detection of HPV16 was 21.8% (95% confidence interval [CI] 18.0-25.6%). The corresponding risks for HPV18, HPV31, HPV33, and other hrHPV types, respectively, were 12.8% (95% CI 7.6-18.0%), 11.3% (95% CI 7.7-14.9%), 12.9% (95% CI 7.0-18.8%) and 3.9% (95% CI 2.7-5.2%). Similar absolute risk estimates were observed in women aged <30 years. Higher HPV16-viral load was associated with increased risk of CIN3+ (hazard ratio = 1.34, 95% CI 1.10-1.64, per 10-fold increase in viral load). A similar trend, although statistically nonsignificant, was found for viral load of HPV18. The 8-year absolute risk of CIN3+ in women with HPV16-viral load ≥100.0 pg/ml was 30.2% (95% CI 21.9-38.6%). Our results support that hrHPV genotyping during cervical cancer screening may help identify women at highest risk of CIN3+.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Displasia do Colo do Útero
/
Neoplasias do Colo do Útero
/
Infecções por Papillomavirus
/
Alphapapillomavirus
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Adolescent
/
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Middle aged
País/Região como assunto:
Europa
Idioma:
En
Revista:
Int J Cancer
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Dinamarca