201. Efficacy of the HPV-16/18 AS04-adjuvanted vaccine against low-risk HPV types (PATRICIA randomized trial): an unexpected observation
- Author
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Anne Szarewski, Warner K. Huh, Tino F. Schwarz, Wiebren A.A. Tjalma, Maria Castro-Sanchez, Diane M. Harper, Mark G. Martens, Willy Poppe, Matti Lehtinen, Aureli Torné, Song Nan Chow, Suzanne M. Garland, Archana Chatterjee, Barbara Romanowski, M. Rowena Del Rosario-Raymundo, S. Rachel Skinner, Marie Pierre David, Kim A. Papp, José Bajo-Arenas, Gary Dubin, Xavier Castellsagué, Ronald T. Ackerman, Frank Struyf, Julio Cesar Teixeira, Newton Sérgio de Carvalho, Dan Apter, Philippe De Sutter, Jorma Paavonen, and UZB Other
- Subjects
Aluminum Hydroxide ,Genital warts ,law.invention ,0302 clinical medicine ,Randomized controlled trial ,law ,Immunology and Allergy ,Multicenter Studies as Topic ,030212 general & internal medicine ,Young adult ,human papillomavirus ,Randomized Controlled Trials as Topic ,Human papillomavirus 16 ,Incidental Findings ,Human papillomavirus 18 ,Incidence (epidemiology) ,Incidence ,Vaccination ,virus diseases ,female genital diseases and pregnancy complications ,3. Good health ,Infectious Diseases ,Lipid A ,Treatment Outcome ,Condylomata Acuminata ,030220 oncology & carcinogenesis ,Viruses ,Coinfection ,Female ,genital warts ,medicine.medical_specialty ,HPV ,Cervical intraepithelial neoplasia ,03 medical and health sciences ,Papillomavirus Vaccines ,Major Articles and Brief Reports ,Adjuvants, Immunologic ,Double-Blind Method ,Internal medicine ,medicine ,Journal Article ,Humans ,Biology ,HPV vaccine ,business.industry ,medicine.disease ,Human papillomavirus 6 ,Clinical Trials, Phase III as Topic ,Immunology ,Human medicine ,business - Abstract
(See the major article by Howell-Jones et al on pages 1397–403.) The human papillomavirus (HPV)-16/18 AS04-adjuvanted vaccine (Cervarix®; GlaxoSmithKline Vaccines) has been demonstrated to have high efficacy against infection and both low- and high-grade cervical intraepithelial neoplasia (CIN; caused by oncogenic HPV types 16 and 18, with substantial cross protection against other high-risk HPV types 31, 33, 45, and 51 [1, 2]. Low-risk HPV types are found in approximately 12% of low-grade CIN, although there is likely to be coinfection with high-risk types [3]. While immunogenicity has been demonstrated in boys [4], the HPV-16/18 AS04-adjuvanted vaccine is not currently licensed for use in boys. Genital warts (GWs) are the most common viral sexually transmitted infection in the Western world, and a 30% increase in new diagnoses was seen in the United Kingdom between 2000 and 2009 [5]. Treatment has a significant morbidity and can be frustrating, and recurrences are common. This causes psychosocial distress to patients and results in substantial financial costs [6, 7]. GWs result from persistent infection with low-risk HPV genotypes, predominantly 6 and 11, although other low-risk types were not evaluated in the former study [8, 9]. It has been suggested that a small proportion of GWs may be caused by HPV types 16 and 18; [10, 11] if true, limited efficacy against warts could occur with a vaccine directed against these types [10, 11]. The HPV-16/18 AS04-adjuvanted vaccine was chosen for the UK national vaccination program, which commenced in September 2008 and has achieved >84% uptake in 12- to 15-year-old girls for all 3 doses. A catch-up program to the age of 18 years achieved between 50% and 70% uptake for all 3 doses [12]. Public Health England (formerly the Health Protection Agency), which monitors rates of sexually transmitted infections in England, has reported a decrease in new diagnoses of GWs in genitourinary medicine clinics among young women since 2008 [13]. By 2011, the overall reduction was 13.3% among 16- to 19-year-olds, with the greatest decline (20.8%) in 17-year-olds, for whom HPV-16/18 AS04-adjuvanted vaccine coverage in 2011 was estimated at 64%. By contrast, rates in the older age groups were generally either static or increasing [14]. Among the potential reasons for this decrease, as discussed by Howell-Jones et al [14], is the possibility of an effect of the HPV-16/18 ASO4-adjuvanted vaccine on low-risk HPV types. A post hoc analysis of the PATRICIA (PApilloma TRIal against Cancer In young Adults) trial was therefore performed to ascertain whether any protection against low-risk HPV types was apparent.
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- 2013