9-Valent human papillomavirus vaccine: a review of the clinical development program
2017
ABSTRACTIntroduction: The 9-valent human papillomavirus (9vHPV) vaccine covers the same HPV types (6/11/16/18) as the quadrivalent HPV (qHPV) vaccine and 5 additional cancer-causing types (31/33/45/52/58). Epidemiological studies indicate that the 9vHPV vaccine could prevent approximately 90% of cervical cancers, 70–85% of high-grade cervical dysplasia (precancers), 85–95% of HPV-related vulvar, vaginal, and anal cancers, and 90% of genital warts.Areas covered: Study design features and key findings from the 9vHPV vaccine clinical development program are reviewed. In particular, 9vHPV vaccine efficacy was established in a Phase III study in young women age 16–26 years. Efficacy results in young women were extrapolated to pre- and young adolescent girls and boys and young men by immunological bridging (i.e., demonstration of non-inferior immunogenicity in these groups versus young women).Expert commentary: The development of the 9vHPV vaccine is the outcome of 20 years of continuous clinical research. Broa...
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