Article

Incidence and clearance of genital human papillomavirus infection in men (HIM): a cohort study

H Lee Moffitt Cancer Center, Tampa, FL, USA. anna.giuliano@moffi tt.org
The Lancet (Impact Factor: 45.22). 02/2011; 377(9769):932-40. DOI: 10.1016/S0140-6736(10)62342-2
Source: PubMed

ABSTRACT Human papillomaviruses (HPVs) cause genital warts and cancers in men. The natural history of HPV infection in men is largely unknown, and that information is needed to inform prevention strategies. The goal in this study was to estimate incidence and clearance of type-specific genital HPV infection in men, and to assess the associated factors.
Men (aged 18-70 years), residing in Brazil, Mexico, and the USA, who were HIV negative and reported no history of cancer were recruited from the general population, universities, and organised health-care systems. They were assessed every 6 months for a median follow-up of 27·5 months (18·0-31·2). Specimens from the coronal sulcus, glans penis, shaft, and scrotum were obtained for the assessment of the status of HPV genotypes.
In 1159 men, the incidence of a new genital HPV infection was 38·4 per 1000 person months (95% CI 34·3-43·0). Oncogenic HPV infection was significantly associated with having a high number of lifetime female sexual partners (hazard ratio 2·40, 1·38-4·18, for at least 50 partners vs not more than one partner), and number of male anal-sexual partners (2·57, 1·46-4·49, for at least three male partners vs no recent partners). Median duration of HPV infection was 7·52 months (6·80-8·61) for any HPV and 12·19 months (7·16-18·17) for HPV 16. Clearance of oncogenic HPV infection decreased in men with a high number of lifetime female partners (0·49, 0·31-0·76, for at least 50 female partners vs not more than one partner), and in men in Brazil (0·71, 0·56-0·91) and Mexico (0·73, 0·57-0·94) compared with the USA. Clearance of oncogenic HPV was more rapid with increasing age (1·02, 1·01-1·03).
The data from this study are useful for the development of realistic cost-effectiveness models for male HPV vaccination internationally.
National Cancer Institute.

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    • "A high prevalence of HPV (44.8%) is found in U.S. women 20 to 24 years old (30% low and 28% high-risk subtypes), compared with 24.5% for U.S. women over the broader age range of 14 to 49 (Dunne et al., 2007). Risk might be even greater for men: 50% prevalence was reported among men 18 to 70 years old (38% low risk and 30% high risk subtypes; Giuliano et al., 2011). There is no treatment for the virus, and although most precancerous cells normalize on their own, some do not and can cause anogenital warts and cervical, vulvar, vaginal, penile, anal, or oropharangeal cancer (CDC, 2013b), as well as psychological and sexual consequences (e.g., anger, anxiety, stigma, lower sexual desire) for the individual and relationship partner(s) (Chaturvedi, 2010). "
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