A Controlled Trial of a Human Papillomavirus Type 16 Vaccine
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Résumé
BACKGROUND: Approximately 20 percent of adults become infected with human papillomavirus type 16 (HPV-16). Although most infections are benign, some progress to anogenital cancer. A vaccine that reduces the incidence of HPV-16 infection may provide important public health benefits. METHODS: In this double-blind study, we randomly assigned 2392 young women (defined as females 16 to 23 years of age) to receive three doses of placebo or HPV-16 virus-like-particle vaccine (40 microg per dose), given at day 0, month 2, and month 6. Genital samples to test for HPV-16 DNA were obtained at enrollment, one month after the third vaccination, and every six months thereafter. Women were referred for colposcopy according to a protocol. Biopsy tissue was evaluated for cervical intraepithelial neoplasia and analyzed for HPV-16 DNA with use of the polymerase chain reaction. The primary end point was persistent HPV-16 infection, defined as the detection of HPV-16 DNA in samples obtained at two or more visits. The primary analysis was limited to women who were negative for HPV-16 DNA and HPV-16 antibodies at enrollment and HPV-16 DNA at month 7. RESULTS: The women were followed for a median of 17.4 months after completing the vaccination regimen. The incidence of persistent HPV-16 infection was 3.8 per 100 woman-years at risk in the placebo group and 0 per 100 woman-years at risk in the vaccine group (100 percent efficacy; 95 percent confidence interval, 90 to 100; P<0.001). All nine cases of HPV-16-related cervical intraepithelial neoplasia occurred among the placebo recipients. CONCLUSIONS: Administration of this HPV-16 vaccine reduced the incidence of both HPV-16 infection and HPV-16-related cervical intraepithelial neoplasia. Immunizing HPV-16-negative women may eventually reduce the incidence of cervical cancer.
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La notice
- Revue
- New England Journal of Medicine
- Thématique
- Cervical Cancer and HPV Research
- Domaine
- Medicine
- Établissements canadiens
- —
- Organismes subventionnaires
- McGill UniversityUniversity of California, Los AngelesJohns Hopkins UniversityUniversity of WashingtonCreighton University
- Mots-clés
- MedicineHuman papillomavirusIncidence (geometry)Human papillomavirus vaccineVirologyClinical trialCervical cancerInternal medicineImmunologyCancerOncologyGardasil
- Résumé présent dans OpenAlex
- oui