Efficacy of the human papillomavirus (HPV)-16/18 AS04-adjuvanted vaccine in women aged 15-25 years with and without serological evidence of previous exposure to HPV-16/18

Int J Cancer. 2012 Jul 1;131(1):106-16. doi: 10.1002/ijc.26362. Epub 2011 Oct 23.

Abstract

In the Phase III PATRICIA study (NCT00122681), the human papillomavirus (HPV)-16/18 AS04-adjuvanted vaccine (Cervarix(®), GlaxoSmithKline Biologicals) was highly efficacious against HPV-16/18 infections and precancerous lesions in women HPV-16/18 deoxyribose nucleic acid (DNA) negative and seronegative at baseline. We present further data on vaccine efficacy (VE) against HPV-16/18 in the total vaccinated cohort including women who may have been exposed to HPV-16/18 infection before vaccination. In women with no evidence of current or previous HPV-16/18 infection (DNA negative and seronegative), VE was 90.3% (96.1% confidence interval: 87.3-92.6) against 6-month persistent infection (PI), 91.9% (84.6-96.2) against cervical intraepithelial neoplasia (CIN)1+ and 94.6% (86.3-98.4) against CIN2+ [97.7% (91.1-99.8) when using the HPV type assignment algorithm (TAA)]. In women HPV-16/18 DNA negative but with serological evidence of previous HPV-16/18 infection (seropositive), VE was 72.3% (53.0-84.5) against 6-month PI, 67.2% (10.9-89.9) against CIN1+, and 68.8% (-28.3-95.0) against CIN2+ [88.5% (10.8-99.8) when using TAA]. In women with no evidence of current HPV-16/18 infection (DNA negative), regardless of their baseline HPV-16/18 serological status, VE was 88.7% (85.7-91.1) against 6-month PI, 89.1% (81.6-94.0) against CIN1+ and 92.4% (84.0-97.0) against CIN2+ [97.0% (90.6-99.5) when using TAA]. In women who were DNA positive for one vaccine type, the vaccine was efficacious against the other vaccine type. The vaccine did not impact the outcome of HPV-16/18 infections present at the time of vaccination. Vaccination was generally well tolerated regardless of the woman's HPV-16/18 DNA or serological status at entry.

Publication types

  • Clinical Trial, Phase III
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adjuvants, Immunologic
  • Adolescent
  • Adult
  • Antibodies, Viral / blood
  • Cervical Intraepithelial Neoplasia / pathology
  • Cervical Intraepithelial Neoplasia / prevention & control
  • Cohort Studies
  • DNA, Viral / blood
  • Female
  • Human papillomavirus 16 / immunology*
  • Human papillomavirus 18 / immunology*
  • Humans
  • Papillomavirus Infections / immunology*
  • Papillomavirus Infections / pathology
  • Papillomavirus Infections / prevention & control*
  • Papillomavirus Infections / virology
  • Papillomavirus Vaccines / administration & dosage
  • Papillomavirus Vaccines / adverse effects
  • Papillomavirus Vaccines / immunology*
  • Treatment Outcome
  • Vaccination
  • Young Adult

Substances

  • Adjuvants, Immunologic
  • Antibodies, Viral
  • DNA, Viral
  • Papillomavirus Vaccines
  • human papillomavirus vaccine, L1 type 16, 18

Associated data

  • ClinicalTrials.gov/NCT00122681