Detection and Type-Distribution of Human Papillomavirus in Vulva and Vaginal Abnormal Cytology Lesions and Cancer Tissues from Thai Women

Ngamkham, Jarunya; Boonmark, Krittika; Phansri, Thainsang

doi:10.7314/apjcp.2016.17.3.1129

Cited by 7 publications

(7 citation statements)

References 31 publications

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“…A comprehensive table of study characteristics is presented in Supporting Information Table S1. The included studies were published between 1989 and 2016 and originated from USA (n = 11), Europe (n = 9) and Asia (n = 9), and one study reported prevalence of HPV and p16 overexpression in samples from several continents …”

Section: Resultsmentioning

confidence: 99%

“…A comprehensive table of study characteristics is presented in Supporting Information Table S1. The included studies were published between 1989 and 2016 and originated from USA (n = 11), [26][27][28][29][30][31][32][33][34][35][36] Europe (n = 9) 37-45 and Asia (n = 9), [46][47][48][49][50][51][52][53][54] and one study reported prevalence of HPV and p16 overexpression in samples from several continents. 55 The vast majority (n = 19) of studies used formalin fixed paraffin embedded tissue for HPV DNA and/or p16 testing.…”

Section: Study Characteristicsmentioning

confidence: 99%

“…54 The majority of studies (n = 20) used a PCR-based method for HPV DNA detection, whereas seven studies used HC2. 32,33,43,45,47,49,51 Among the studies using a PCR-based test, 12 used a single set of consensus primers, 27,28,31,36,39,40,42,48,[52][53][54][55] three used a combination of consensus primers, 30,35,38 two used combinations of typespecific and consensus primers, 44,46 two used type-specific primers alone, 26,37 and one study used in house primers. 41 All studies examining p16 positivity (n = 6) used immunohistochemistry (IHC) to detect overexpression of the p16 protein.…”

Section: Study Characteristicsmentioning

confidence: 99%

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Human papillomavirus and p16 in squamous cell carcinoma and intraepithelial neoplasia of the vagina

Bertoli

Rasmussen

Sand

et al. 2019

Intl Journal of Cancer

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We estimated the overall and type‐specific prevalence of human papillomavirus (HPV) and p16 overexpression in vaginal cancer and vaginal intraepithelial neoplasia (VaIN). We conducted a systematic search of PubMed, Embase and Cochrane Library to identify studies published between 1986 and 2017 using PCR‐based or Hybrid Capture 2 tests to evaluate the presence of HPV DNA and/or using any method to detect p16 overexpression in VaIN, vaginal squamous cell carcinoma (VaSCC), or other types of vaginal cancer. Applying a random effects model, we estimated the pooled prevalence of HPV and p16 overexpression along with 95% confidence intervals (CIs). The I2 statistic was used to assess heterogeneity. We included 26 studies, reporting HPV prevalence and six studies evaluating p16 overexpression. The pooled HPV prevalences in VaSCC (n = 593) and VaIN (n = 1,374) were 66.7% (95% CI = 54.7–77.8) and 85.2% (95% CI = 78.2–91.0), respectively. Substantial inter‐study heterogeneity was observed, and analyses stratified on geographic region, type of tissue, HPV detection method or PCR primer type did not fully explain the observed heterogeneity. The most predominant HPV type among the HPV positive VaSCC and VaIN cases was HPV16, followed by HPV33, and HPV45 (in VaIN) and HPV18, and HPV33 (in VaSCC). In pooled analyses, 89.9% (95% CI = 81.7–94.6) of HPV positive and 38.9% (95% CI = 0.9–90.0) of HPV negative vaginal cancers were positive for p16 overexpression. Our findings suggest that vaccination against HPV might prevent a substantial proportion of vaginal neoplasia and highlight the need for further studies of the possible clinical value of p16 testing in these patients.

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“…A comprehensive table of study characteristics is presented in Supporting Information Table S1. The included studies were published between 1989 and 2016 and originated from USA (n = 11), Europe (n = 9) and Asia (n = 9), and one study reported prevalence of HPV and p16 overexpression in samples from several continents …”

Section: Resultsmentioning

confidence: 99%

“…A comprehensive table of study characteristics is presented in Supporting Information Table S1. The included studies were published between 1989 and 2016 and originated from USA (n = 11), [26][27][28][29][30][31][32][33][34][35][36] Europe (n = 9) 37-45 and Asia (n = 9), [46][47][48][49][50][51][52][53][54] and one study reported prevalence of HPV and p16 overexpression in samples from several continents. 55 The vast majority (n = 19) of studies used formalin fixed paraffin embedded tissue for HPV DNA and/or p16 testing.…”

Section: Study Characteristicsmentioning

confidence: 99%

Section: Study Characteristicsmentioning

confidence: 99%

See 1 more Smart Citation

Human papillomavirus and p16 in squamous cell carcinoma and intraepithelial neoplasia of the vagina

Bertoli

Rasmussen

Sand

et al. 2019

Intl Journal of Cancer

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“…The data on the prevalence of vulvar HPV infection among women in the general population are limited compared to other anogenital sites. Studies that reported on vulvar HPV infections were typically conducted among women that had vulvar lesions and were not representative of general population prevalence estimates of vulvar HPV infections [22,23]. Of the three studies that presented data on the prevalence of any vulvar HPV infection two (from China and UK) were population studies, while a study from the US was a review of medical records [24][25][26].…”

Section: Discussionmentioning

confidence: 99%

Prevalence and genotype specific concordance of oro-genital and anal human papillomavirus infections among sexually active Nigerian women

Morhason-Bello

Baisley

Pavón

et al. 2021

Infect Agents Cancer

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Background Human papillomavirus (HPV) associated cancers are increasingly reported globally, including in sub-Saharan Africa (SSA). However, with the exception of cervical HPV infection, data from SSA on the epidemiology of oral and genital HPV infections are limited. This study assessed the prevalence and concordance of oro-genital and anal HPV genotype specific infections among women in the general population. Methods We conducted a cross-sectional study in sexually active women aged 18–45 years in Ibadan, Nigeria. After a face-to-face interview and clinical examination, oral, cervical, vulvar, and anal samples were collected from participants and tested by the Anyplex II 28 HPV assay. Descriptive and multivariable analyses were used to report prevalence and risk factors associated with HPV infections. Results The prevalence of any vulva, cervical, anal, and oral HPV infections was 68.0% (210/309), 59.7% (182/305), 56.8% (172/303), and 16.1% (14/286), respectively. There was an inverse relationship between age-group and HPV prevalence of HPV in all anatomic sites except for the oral HPV infections. HPV 35 was the most prevalent high-risk HPV genotype in the vulva, cervix and oral cavity. Associated risk factors for HPV infection in each of the anatomic sites were reported. Overall, 10.0% (31/310) women had concordance of any HPV type in the four anatomic sites. Conclusion There was a high prevalence of oro-genital and anal HPV infections among sexually active Nigerian women, with concordance of HPV types in the cervix, vulva, anus and oral cavity. We advocate large longitudinal studies that will involve sampling of multiple anatomic sites and inclusion of other women in the community for better understanding of HPV epidemiology in this region.

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“…A number of studies reported various proportions of HPV infection in patients diagnosed with different type of HPV related cancers. Nevertheless, mostly the study population were living in city areas [37][38][39][40][41][42][43]. Only a few studies reported prevalence of HPV in the general Thai population.…”

Section: Plos Onementioning

confidence: 99%

Geographical risk pattern and temporal trends in incidence of HPV-related cancers in northern Thailand: A population-based study

et al. 2022

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Background The burden of HPV-related cancers in different regions worldwide varies according to several factors. This study aims to measure inequality in the risk of incidence of HPV-related cancers in term of geographical risk patterns in northern Thailand using a population-based cancer registry data. Methods Trends in age-standardized HPV-related cancer incidence were calculated for the 2008–2017 time period. The Besag-York-Molli´e model was used to explore the spatial distribution of the relative risk (RR) of HPV-related cancers at the district level. A higher RR reflects a larger disparity. The geographical risk pattern of the diseases in two periods, 2008–2012 and 2013–2017 were described and compared. Results From 2008 to 2017, the incidence of oropharyngeal and anal cancers showed a slightly increased trend in males but remained stable in females, the incidence of vulvar, vaginal and penile cancers were stable while the incidence of cervical cancer decreased. The RR range was closer to 1 in the second period compared to the first period. This suggests a decrease in the disparities of incidence of cervical cancer. However, in some areas near the Thai-Myanmar border, the RR values remained high. Conclusion The incidence rate of most HPV-related cancers remained low and stable over the study period in northern Thailand. For the most common HPV-related malignancy, cervical cancer, the incidence rate steadily decreased but with marked geographic disparities, possibly reflecting health inequity especially in the border areas.

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Detection and Type-Distribution of Human Papillomavirus in Vulva and Vaginal Abnormal Cytology Lesions and Cancer Tissues from Thai Women

Cited by 7 publications

References 31 publications

Human papillomavirus and p16 in squamous cell carcinoma and intraepithelial neoplasia of the vagina

Human papillomavirus and p16 in squamous cell carcinoma and intraepithelial neoplasia of the vagina

Prevalence and genotype specific concordance of oro-genital and anal human papillomavirus infections among sexually active Nigerian women

Geographical risk pattern and temporal trends in incidence of HPV-related cancers in northern Thailand: A population-based study

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