Department of Cancer Epidemiology, H Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA.
Int J Cancer. 2012 Aug 1;131(3):E282-91. doi: 10.1002/ijc.27397. Epub 2012 Jan 11.
Human papillomavirus (HPV) causes anal, penile and oropharyngeal cancers in men. Genital HPV prevalence in men appears to vary by world region with men residing in Asia having among the lowest prevalence. Unfortunately, there is little information on prevalence of HPV infection in men by race. The purpose of this study was to examine HPV prevalence by race across three countries. 3,909 men ages 18-70 years enrolled in an ongoing prospective cohort study of the natural history of HPV in men (The HIM Study) were included in the analysis. Participants completed risk factor questionnaires and samples were taken from the penile epithelium and scrotum for HPV detection. HPV testing of the combined DNA extract was conducted using PCR and genotyping. Asian/Pacific Islanders had the lowest HPV prevalence of 42.2% compared to Blacks (66.2%), and Whites (71.5%). The Asian/Pacific Islander race was strongly protective in univariate analysis (prevalence ratio (PR) = 0.59; 95% confidence interval (CI): 0.48-0.74) and multivariate analysis for any HPV infection (PR = 0.65; 95% CI: 0.52-0.8). Stratified analysis by lifetime number of female partners also showed strong inverse associations with the Asian/Pacific Islander race. We consistently observed the lowest prevalence of HPV infection among Asian/Pacific Islanders with moderate inverse associations even after various adjustments for potential confounding factors. Unmeasured behavioral factors, sexual mixing with low risk women, and/or race-specific differences in the frequency of germline variations among immune regulating genes may underlie these associations. Further studies among Asian populations that incorporate measures of immuno-genetics are needed to understand this phenomenon.
人乳头瘤病毒(HPV)可导致男性肛门、阴茎和口咽癌。男性人群中的生殖器 HPV 流行率似乎因世界区域而异,亚洲男性的流行率最低。不幸的是,关于男性 HPV 感染的种族流行率的信息很少。本研究旨在通过种族检查三个国家的 HPV 流行率。共纳入了 3909 名年龄在 18-70 岁之间的男性参加一项正在进行的关于男性 HPV 自然史的前瞻性队列研究(HIM 研究)。参与者完成了危险因素问卷,从阴茎上皮和阴囊采集样本进行 HPV 检测。采用 PCR 和基因分型对合并 DNA 提取物进行 HPV 检测。与黑人(66.2%)和白人(71.5%)相比,亚洲/太平洋岛民的 HPV 流行率最低,为 42.2%。在单变量分析中,亚洲/太平洋岛民种族具有很强的保护作用(流行率比(PR)=0.59;95%置信区间(CI):0.48-0.74),多变量分析中任何 HPV 感染(PR=0.65;95%CI:0.52-0.8)。按终生女性伴侣数量分层分析也显示出与亚洲/太平洋岛民种族的强烈反比关系。我们一致观察到亚洲/太平洋岛民的 HPV 感染率最低,即使在对潜在混杂因素进行各种调整后,也存在中度反比关系。未测量的行为因素、与低风险女性的性混合以及/或免疫调节基因中种系变异的种族特异性差异可能是这些关联的基础。需要在亚洲人群中进行进一步的研究,这些研究应包含免疫遗传学的测量方法,以了解这一现象。