HPV antibody levels and clinical efficacy following administration of a prophylactic quadrivalent HPV vaccine

Elmar A Joura, Susanne K Kjaer, Cosette M Wheeler, Kristján Sigurdsson, Ole-Erik Iversen, Mauricio Hernandez-Avila, Gonzalo Perez, Darron R Brown, Laura A Koutsky, Eng Hseon Tay, Patricia García, Kevin A Ault, Suzanne M Garland, Sepp Leodolter, Sven-Eric Olsson, Grace W K Tang, Daron G Ferris, Jorma Paavonen, Matti Lehtinen, Marc StebenXavier Bosch, Joakim Dillner, Robert J Kurman, Slawomir Majewski, Nubia Muñoz, Evan R Myers, Luisa L Villa, Frank J Taddeo, Christine Roberts, Amha Tadesse, Janine Bryan, Lisa C Lupinacci, Katherine E D Giacoletti, Shuang Lu, Scott Vuocolo, Teresa M Hesley, Richard M Haupt, Eliav Barr

176 Citationer (Scopus)

Abstract

The efficacy of the quadrivalent Human Papillomavirus (HPV) vaccine is thought to be mediated by humoral immunity. We evaluated the correlation between quadrivalent HPV vaccine-induced serum anti-HPV responses and efficacy. 17,622 women were vaccinated at day 1, and months 2 and 6. At day 1 and at 6-12 months intervals for up to 48 months, subjects underwent Papanicolaou and genital HPV testing. No immune correlate of protection could be found due to low number of cases. Although 40% of vaccine subjects were anti-HPV 18 seronegative at end-of-study, efficacy against HPV 18-related disease remained high (98.4%; 95% CI: 90.5-100.0) despite high attack rates in the placebo group. These results suggest vaccine-induced protection via immune memory, or lower than detectable HPV 18 antibody titers.

OriginalsprogEngelsk
TidsskriftVaccine
Vol/bind26
Udgave nummer52
Sider (fra-til)6844-51
Antal sider8
ISSN0264-410X
DOI
StatusUdgivet - 9 dec. 2008
Udgivet eksterntJa

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