Maximizing impact: the power of early HPV vaccination for long-term protection-lessons from a systematic review and meta-regression analysis

Resumo original em inglês

O que aconteceu

This systematic review and meta-regression analysis assessed the impact of human papillomavirus 16/18 (HPV16/18)-AS04 vaccine (Cervarix®) on advanced cervical lesions, including grade 3 cervical intraepithelial neoplasia or worse (CIN3, CIN3+), or cervical cancer, highlighting age-at-vaccination-dependent vaccine efficacy and effectiveness.

Studies reporting HPV16/18-AS04 vaccine efficacy or effectiveness were included with an intervention group receiving HPV16/18-AS04 vaccine and comparator group receiving placebo, another vaccine or being unvaccinated. Of 53 articles identified, nine were selected. Meta-analysis and meta-regression models with random effects and data-driven model selection determined vaccine effects (VEs) and impactful covariates.

O que encontraram

HPV16/18-AS04 vaccine effectively prevented advanced cervical premalignant lesions and cancer in adolescent girls and women vaccinated at 12-25 years. Combined randomized controlled trials and observational studies VEs on CIN3+ ranged between 76.78% (95% CI 28.15-92.49) for HPV16/18 and 56.19% (95% CI 24.76-74.49) irrespective of HPV type. Vaccine effectiveness was greatest in those vaccinated at the youngest ages.

Por que isso importa

HPV16/18-AS04 vaccine provides long-term protection against cervical premalignant lesions and cervical cancer in both controlled and real-world settings, particularly when administered at younger ages. The evidence urges policymakers and the community to ensure HPV vaccination begins at the youngest recommended ages.

Resumo publicado sob licença CC BY. A tradução para o português ainda não chegou a este estudo.