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Castellsagué, Xavier; Naud, Paulo; Chow, Song-Nan; Wheeler, Cosette M.; Germar, Maria Julieta V.; Lehtinen, Matti; Paavonen, Jorma; Jaisamrarn, Unnop; Garland, Suzanne M.; Salmerón, Jorge; Apter, Dan; Kitchener, Henry; Teixeira, Julio C.; Skinner, S. Rachel; Limson, Genara; Szarewski, Anne; Romanowski, Barbara; Aoki, Fred Y.; Schwarz, Tino F.; Poppe, Willy A. J.; Bosch, F. Xavier; de Carvalho, Newton S.; Peters, Klaus; Tjalma, Wiebren A. A.; Safaeian, Mahboobeh; Raillard, Alice; Descamps, Dominique; Struyf, Frank; Dubin, Gary; Rosillon, Dominique; Baril, Laurence
The Journal of infectious diseases, 08/2014, Volume: 210, Issue: 4Journal Article
Background. We examined risk of newly detected human papillomavirus (HPV) infection and cervical abnormalities in relation to HPV type 16/18 antibody levels at enrollment in PATRICIA (Papilloma Trial Against Cancer in Young Adults; NCT00122681). Methods. Using Poisson regression, we compared risk of newly detected infection and cervical abnormalities associated with HPV-16/18 between seronegative vs seropositive women (15-25 years) in the control arm (DNA negative at baseline for the corresponding HPV type HPV-16: n = 8193; HPV-18: n = 8463). Results. High titers of naturally acquired HPV-16 antibodies and/or linear trend for increasing antibody levels were significantly associated with lower risk of incident and persistent infection, atypical squamous cells of undetermined significance or greater (ASCUS+), and cervical intraepithelial neoplasia grades 1/2 or greater (CIN1+, CIN2+). For HPV-18, although seropositivity was associated with lower risk of ASCUS+ and CIN1+, no association between naturally acquired antibodies and infection was demonstrated. Naturally acquired HPV-16 antibody levels of 371 (95% confidence interval CI, 242-794), 204 (95% CI, 129-480), and 480 (95% CI, 250-5756) EU/mL were associated with 90% reduction of incident infection, 6-month persistent infection, and ASCUS+, respectively. Conclusions. Naturally acquired antibodies to HPV-16, and to a lesser extent HPV-18, are associated with some reduced risk of subsequent infection and cervical abnormalities associated with the same HPV type.
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