scholarly journals Combining Machine Learning with Bayesian Inverse Modelling to Estimate the Conditional Probability of Developing Oropharyngeal Cancer following an Oral Human Papilloma Virus Infection

2020 ◽  
Author(s):  
Prerna Tewari ◽  
Eugene Kashdan ◽  
Cathal Walsh ◽  
Cara Martin ◽  
Andrew Parnell ◽  
...  
Keyword(s):  
Machine Learning ◽  
Natural History ◽  
Human Papilloma Virus ◽  
Marital Status ◽  
Conditional Probability ◽  
Hpv Infection ◽  
Papilloma Virus ◽  
White Males ◽  
Oral Hpv ◽  
Hispanic White

Abstract Background Despite an epidemic increase in the prevalence of Human Papilloma Virus (HPV) related Oropharyngeal Squamous Cell Carcinomas (OPSCCs) in Northern America and parts of Europe, there is virtually no information about the natural history of these cancers. The lack of well–defined precursor lesions and limited data on oral HPV persistence and clearance rates, poses a challenge for disease modelling. We propose a novel mathematical modelling approach to estimate the conditional probability of developing HPV related OPSCCs following a prevalent HPV infection and other covariates. Methods We developed a double-Bayes method, whereby a Bayesian machine learning model first estimates the probability of an individual having an oral HPV infection, given OPSCC and other covariate information. The model is then inverted using Bayes’ theorem to reverse the probability relationship. The mathematical model was derived from two datasets representing the adult population in the United States (US), the Surveillance Epidemiology and End Results Program (SEER) Head and Neck with HPV Status Database and the National Health and Nutrition Examination Survey (NHANES) 2011-2014. Results The model dataset contains 8,623 subjects of which 70.7% had a prevalent oral HPV positive infection. When stratified by age, sex, marital status and race/ethnicity, the model estimated higher conditional probability for developing OPSCCs following an oral HPV infection in non-Hispanic White males and females compared to other race/ethnicities. Non-Hispanic White males with an oral HPV infection had nearly two fold higher risk of developing OPSCC than non-Hispanic White females (10.6 cases per 10,000 thousand vs 5.05 cases per 10,000) in the age range 50-60. Conclusion We have employed a novel statistical approach to estimate the conditional probability of developing OPSCCs following an oral HPV infection and covariates age, sex, ethnicity and marital status in the US population. We recognise that at best this is a first guess estimate of a natural history model of HPV driven OPSCCs within the existing limitations of the model.

scholarly journals Estimating the conditional probability of developing human papilloma virus related oropharyngeal cancer by combining machine learning and inverse Bayesian modelling

2021 ◽  
Vol 17 (8) ◽  
pp. e1009289
Author(s):  
Prerna Tewari ◽  
Eugene Kashdan ◽  
Cathal Walsh ◽  
Cara M. Martin ◽  
Andrew C. Parnell ◽  
...  
Keyword(s):  
Machine Learning ◽  
Natural History ◽  
Human Papilloma Virus ◽  
Conditional Probability ◽  
The United States ◽  
Hpv Infection ◽  
Health Concern ◽  
Prevention Strategies ◽  
Papilloma Virus ◽  
Oral Hpv

The epidemic increase in the incidence of Human Papilloma Virus (HPV) related Oropharyngeal Squamous Cell Carcinomas (OPSCCs) in several countries worldwide represents a significant public health concern. Although gender neutral HPV vaccination programmes are expected to cause a reduction in the incidence rates of OPSCCs, these effects will not be evident in the foreseeable future. Secondary prevention strategies are currently not feasible due to an incomplete understanding of the natural history of oral HPV infections in OPSCCs. The key parameters that govern natural history models remain largely ill-defined for HPV related OPSCCs and cannot be easily inferred from experimental data. Mathematical models have been used to estimate some of these ill-defined parameters in cervical cancer, another HPV related cancer leading to successful implementation of cancer prevention strategies. We outline a “double-Bayesian” mathematical modelling approach, whereby, a Bayesian machine learning model first estimates the probability of an individual having an oral HPV infection, given OPSCC and other covariate information. The model is then inverted using Bayes’ theorem to reverse the probability relationship. We use data from the Surveillance, Epidemiology, and End Results (SEER) cancer registry, SEER Head and Neck with HPV Database and the National Health and Nutrition Examination Surveys (NHANES), representing the adult population in the United States to derive our model. The model contains 8,106 OPSCC patients of which 73.0% had an oral HPV infection. When stratified by age, sex, marital status and race/ethnicity, the model estimated a higher conditional probability for developing OPSCCs given an oral HPV infection in non-Hispanic White males and females compared to other races/ethnicities. The proposed Bayesian model represents a proof-of-concept of a natural history model of HPV driven OPSCCs and outlines a strategy for estimating the conditional probability of an individual’s risk of developing OPSCC following an oral HPV infection.

A survey on prevalence, risk factors and knowledge for oral human papilloma virus infections among university students

2021 ◽  
Author(s):  
Mümtaz Güran ◽  
Pavlos I Neophytou ◽  
Gizem Şanlıtürk ◽  
Damla Kanlıada Demirdöv ◽  
Maram Al-sharakhi ◽  
...  
Keyword(s):  
Risk Factors ◽  
University Students ◽  
Human Papilloma Virus ◽  
Sexual Experience ◽  
Hpv Infection ◽  
Virus Infections ◽  
Papilloma Virus ◽  
Healthy Sample ◽  
Oral Hpv ◽  
Significant Factors

Aim: This study analyses the prevalence, risk factors and knowledge levels for oral human papilloma virus (HPV) infection in healthy university students. Materials & methods: A questionnaire was distributed to 452 participants. Also, oral-rinsed samples were collected for molecular screening and genotyping studies by using validated protocols. Results: The prevalence of HPV was 0.7% (HPV type 72var [0.5%; n = 2] and HPV type 13 [0.2%; n = 1]). Male circumcision and age of first sexual experience were the significant factors associated with oral HPV positivity. Several factors found to be predictors for HPV positivity including not being vaccinated. Conclusion: Here, the prevalence of oral HPV infection was low among a healthy sample pool. Further studies are suggested to clarify relations between the infection and risk factors.

scholarly journals Awareness and Knowledge about Human Papilloma Virus Infection among Students at Secondary Occupational Health School in China

2021 ◽  
Vol 18 (12) ◽  
pp. 6321
Author(s):  
Xin Wang ◽  
Taifeng Du ◽  
Xiaoling Shi ◽  
Kusheng Wu
Keyword(s):  
Occupational Health ◽  
Human Papilloma Virus ◽  
Healthcare Providers ◽  
Human Papilloma Virus Infection ◽  
First Grade ◽  
Hpv Infection ◽  
Cross Sectional Study ◽  
Causal Link ◽  
Cross Sectional ◽  
Papilloma Virus

Cervical cancer (CC) is one of the most common causes of cancer-related deaths worldwide. CC is mainly caused by human papilloma virus (HPV), which can be prevented by vaccination. We conducted a cross-sectional study in secondary occupational health school (SOHS) through a questionnaire aimed to assess the awareness and knowledge regarding HPV infection of students. A total of 2248 students participated in the survey, 45.3% of them had heard about CC, while only 21.9% of them had heard about HPV; and 74.2% had no idea of the causal link between HPV infection and CC. Most participants displayed poor awareness and knowledge about HPV infection. The results suggested that age, grade, major, academic performance, etc. were correlated with higher awareness of CC, HPV and HPV infection (p < 0.05). In multivariable logistic analysis, third-grade students had the most increased awareness of CC (OR = 17.13, 95%CI: [8.11, 36.15]), HPV (OR = 6.59, 95%CI: [4.16, 10.43]) and HPV vaccine (OR = 2.78, 95%CI: [1.78, 4.32]) when compared to first-grade. Awareness and knowledge regarding HPV infection were insufficient among students in SOHS. As the future healthcare providers, these results highlight the need to supplement targeted education to improve their awareness and knowledge of HPV and vaccination.

Human papilloma virus (HPV) infection in children and adolescents

2008 ◽  
Vol 168 (3) ◽  
pp. 267-273 ◽  
Author(s):  
Ioannis N. Mammas ◽  
George Sourvinos ◽  
Demetrios A. Spandidos
Keyword(s):  
Human Papilloma Virus ◽  
Children And Adolescents ◽  
Hpv Infection ◽  
Papilloma Virus

scholarly journals Gastric-type mucinous adenocarcinoma of the cervix in a woman with Peutz-Jeghers syndrome

2021 ◽  
Author(s):  
Tong Tong ◽  
Qiong Fan ◽  
Shu Shi ◽  
Yuhong Li ◽  
Yudong Wang
Keyword(s):  
Human Papilloma Virus ◽  
Mucinous Adenocarcinoma ◽  
Clinical Stage ◽  
Young Patients ◽  
Hpv Infection ◽  
Sexual Life ◽  
Autosomal Dominant Disorder ◽  
Papilloma Virus ◽  
Gastric Type ◽  
Peutz Jeghers Syndrome

Abstract Background: Peutz-Jeghers syndrome(PJS) is a very rare autosomal dominant disorder with predisposition to multiple neoplasms. Gastric-type adenocarcinoma (GAS) is a less common carcinoma of the cervix than squamous cell carcinoma, which is more aggressive and has lower 5 year survival rate than usual type endocervical adenocarcinoma (ECA), and unrelated to human papilloma virus(HPV) infection as well. We present a 32 year-old patient with Peutz-Jeghers syndrome who was found to have gastric-type adenocarcinoma of the cervix.Case presentation: A 32-year-old woman without sexual life ever who was diagnosed Peutz-Jeghers syndrome when she was two years old presented with watery discharge for more than 6 months. A tumor around 6cm was found on the cervix and she was diagnosed gastric-type mucinous adenocarcinoma of the cervix clinical stage IB3. She was treated with artery intervention chemotherapy for one course followed by radical surgery and then systematic chemotherapy.Conclusions: The case suggests more thorough cancer screening for patients with PJS as the disorder is rare and has high risk of malignancies. Young patients with Peutz-Jeghers syndrome, including those without sexual life, who have watery discharge or bleeding should be screened for cervical carcinoma even if cytologic results or human papilloma virus (HPV) is negative.

scholarly journals Human Papilloma Virus: Current Knowledge and Focus on Oral Health

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Luca Fiorillo ◽  
Gabriele Cervino ◽  
Giovanni Surace ◽  
Rosa De Stefano ◽  
Luigi Laino ◽  
...  
Keyword(s):  
Early Diagnosis ◽  
Human Papilloma Virus ◽  
Current Knowledge ◽  
Therapeutic Strategies ◽  
Papilloma Virus ◽  
Scientific Databases ◽  
Different Types ◽  
Oral Hpv ◽  
Type Of Injury

The human papilloma virus (HPV) is responsible for different pathological manifestations in humans. This agent gives rise to lesions of different types and in different areas of the organism, including the oral cavity. The aim of this study is to show which are the main diseases for which HPV is responsible and to bring to light some of the interceptive and therapeutic strategies. The analysis was conducted by consulting the major scientific databases with the aim of obtaining information on the characteristics of oral HPV and its management; furthermore, the literature was supported by some clinical cases proposed by the authors. The role of dentistry is essential in the early diagnosis of this type of pathologies and above all in knowing how to direct patients towards a path that can lead to patient management, especially in the event that these lesions have a malignant potential. Enhancing the knowledge and role of dentistry can lead to early diagnosis of this type of injury, intercepting a pathology that could have multiorgan implications.

scholarly journals Prognostic Influence of Tobacco Smoking on Human Papilloma Virus-Related Oropharyngeal Cancer is Dependent Upon Treatment Modality

2020 ◽  
Author(s):  
Jun ITAMI ◽  
Kenya KOBAYASHI ◽  
Taisuke MORI ◽  
Yoshitaka HONMA ◽  
Yuko KUBO ◽  
...  
Keyword(s):  
Human Papilloma Virus ◽  
Tobacco Smoking ◽  
Tnm Classification ◽  
Hpv Infection ◽  
Single Institution ◽  
Papilloma Virus ◽  
Therapeutic Modalities ◽  
The Subject ◽  
The Impact ◽  
Disease Specific

Abstract [Purpose] Tobacco smoking has been reported to influence the prognosis of human papilloma virus (HPV)-related orophageyngeal squamous cell carcinoma (OPSCC). However, it remains to be studied whether tobacco smoking equally affects the patients treated by various modalities. [Material and Method] From 2010 through 2018, 241 patients with OPSCC were treated in a single institution, out of which 144 patients had HPV-related OPSCC. P16 immunohistochemical staining was used as a surrogate of HPV infection. Two patients was excluded because of inadequate radiation dose, and the remaining　142 patients were the subject of this study. Median age was 63.8 years and more than 80% were male. More than 70% were smokers or ex-smokers with a median pack year of 17.3. Eighty-seven patients (61.3%) were classified as stage I.[Results] For all 142 patients with HPV-related OPSCC, overall survival (OS) and disease-specific survival (DSS) were 87.0% and 93.4% in 3 years, respectively. There were no differences of OS and DSS according to the stages by 8th edition of tumor, node, and metastasis (TNM) classification and the primary sites. OS and DSS were different by the amount of tobacco smoking expressed in pack year (PY) > 30 and < 30. Also the presence of secondary cancer impacted OS. However, the influence of the amount of tobacco smoking was reduced in the patients treated by radiation therapy. [Conclusions] The impact of tobacco smoking upon the prognosis of HPV-related OPSCC seems to be dependent upon therapeutic modalities.

scholarly journals 1641. A Comparison of Human Papilloma Virus Infection Prevalence Trends Pre- and Post-HPV Vaccine Implementation

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S599-S599
Author(s):  
Patrick Ovie. Fueta ◽  
Onyema Greg Chido-Amajuoyi
Keyword(s):  
United States ◽  
Human Papilloma Virus ◽  
Hpv Vaccine ◽  
Human Papilloma Virus Infection ◽  
The United States ◽  
Hpv Infection ◽  
Infection Prevalence ◽  
Transmitted Infection ◽  
Papilloma Virus ◽  
The Impact

Abstract Background Human papilloma virus (HPV) is the most common sexually transmitted infection in the United States, with an annual incidence rate of approximately 14 million people. The HPV vaccine has been demonstrated to be highly effective in the prevention of HPV infection and HPV-associated diseases. This study aims to evaluate the impact of HPV vaccine on the prevalence of HPV infection in the United States and evaluate the trends of disease prevalence pre- and post-HPV vaccine implementation. Methods We conducted a secondary data analysis of the National Health and Education Survey (NHANES) for trends in HPV infection from 2003 to 2016. The analysis was grouped into a pre-HPV vaccine implementation (2003–2006) cohort including 4064 females, aged 18–59 years; and a post-HPV vaccine implementation (2007–2016) cohort which included 10718 females, aged 18–59 years. Further analysis of HPV infection prevalence, pre- and post-HPV vaccine implementation, stratified by sociodemographic characteristics were conducted. Results The prevalence of HPV infection prior to HPV vaccine implementation was 43.98% (95 CI 42.71%–46.58%) compared with 40.55% (95 C.I 40.55%–40.56%) in the post-HPV vaccine implementation era. Among females with HPV infections in the post-HPV vaccine implementation cohort 82.6 (95% CI 80.41%–83.42%) were unvaccinated. In both cohorts, black females had a significantly higher prevalence of HPV with a prevalence rate of 18.56% (95% CI 18.23%–20.56%) in the pre-HPV vaccine implementation cohort, and 15.61% (95% CI 14.82 – 19.4%) in the post-HPV vaccine implementation cohort. Females with less than high school education had a higher prevalence of HPV in the pre and post- HPV vaccine implementation cohorts with prevalence rates of 25.77% (95% CI 23.44%–28.72%) and 24.96% (95% CI 23.41%–25.67%), respectively. Conclusion The results suggest that HPV infection prevalence has declined since the implementation of HPV vaccine to US national immunization program. Our findings highlight disparities in HPV infection prevalence by race and educational status, and these patterns are in keeping with HPV-associated disease such as warts and HPV-associated cancers. Disclosures All authors: No reported disclosures.

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