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Summary: Background: HPV-related oropharyngeal squamous cell carcinoma (OPSCC) is increasing in incidence, yet there are few well-designed oral HPV epidemiology studies in general populations. This study assessed oral HPV prevalence and risk-factors among a general population in Europe and the United States (US). Methods: The cross-sectional study was conducted between November 2020 and July 2023 in 105 dental offices in France, Germany, Spain, the United Kingdom (UK) and US. Participants were aged 18–60 and visiting dental clinics for routine examination. Participants provided oral gargle specimen for HPV DNA and genotyping and completed behavioral questionnaires. HPV DNA detection and genotyping was performed using SPF10/DEIA/LiPA25 at central laboratories. Findings: Of 7674 participants, mean (SD) age was 40.0 (11.9), and 45.8% were males. Among men, any oral HPV prevalence ranged between countries from 6.6% to 15.0% and 1.8%–4.5% for high-risk (HR) types. Among women, any oral HPV prevalence ranged between countries from 3.6% to 6.8% and 0.2%–2.1% for HR types. HR infection among men was associated with older age (AOR 1.04; 95% CI: 1.02, 1.06); marijuana use (AOR 1.92; 95% CI: 1.19–3.11); increasing number of lifetime female oral sex partners; and by country, residing in the UK compared to Spain (AOR 2.89; 95% CI: 1.30–6.43). HR infection among women was associated with lifetime marijuana use (AOR 2.33; 95% CI: 1.18–4.60) and by country, residing in France compared to Spain (AOR 4.46; 95% CI: 1.26–15.77). Interpretation: Oral HPV burden was highest among older men who may be at risk of developing OPSCC. Funding: Funding for this research was provided by Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc., Rahway, NJ, USA.

Aims: Neuroendocrine tumors (NET) of the cervix are rare tumors with a very aggressive course. The human papillomavirus (HPV) has been linked to its etiology. The objective of this study is to describe HPV prevalence and genotype distribution of NET. Methods and Results: Forty-nine tumors with histological neuroendocrine features were identified among 10,575 invasive cervical cancer (ICC) cases from an international study. HPV DNA detection was done using SPF10/DEIA /LiPA25 system. Immunohistochemical (IHC) staining for neuroendocrine markers (chromogranin A, synaptophysin, CD56) and for p16INK4a as a surrogate for HPV transforming infection was performed. In 13 samples with negative IHC for all 3 neuroendocrine markers studied, it was possible to conduct electron microscopy (EM).NET represented 0.5% of the total ICC series and HPV was detected in 42 out of 49 samples (85.7%, 95%CI:72.8%,94.1%). HPV16 was the predominant type (54.8%), followed by HPV18 (40.5%). p16INK4a overexpression was observed in 38/44 cases (86.4%). Neuroendocrine IHC markers could be demonstrated in 24/37 (64.9%) cases. EM identified neuroendocrine granules in 8 samples with negative IHC markers. Conclusions: Our data confirms the association of cervical NET with HPV and p16INK4a overexpression. Specifically, HPV16 and 18 accounted together for over 95% of the HPV positive cases. Current HPV vaccines could largely prevent these aggressive tumors. Keywords: Neuroendocrine Tumor, Cervical Cancer, Human Papillomavirus, Immunohistochemistry, PCR