4.6 Article

Age-related distribution of uncommon HPV genotypes in cervical intraepithelial neoplasia grade 3

Journal

GYNECOLOGIC ONCOLOGY
Volume 161, Issue 3, Pages 741-747

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygyno.2021.03.025

Keywords

Human papillomavirus; Non-screening type-HPV; Non-HPV-16; 18; Age; Cervical intraepithelial neoplasia

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This study evaluated the age-related distribution of HPV genotypes affecting the risk-assessment in cervical cancer screening programs, showing that non-screening-type-HPV and non-HPV-16/18 genotypes have an impact on CIN3 lesions and their prevalence varies with age.
Aim. Cervical cancer prevention guidelines include Human Papillomavirus (HPV) test, cytology, and HPV-16/ 18 typing for triage to determine the risk of cervical intraepithelial neoplasia (CIN) grade 3 as the best proxy of cervical cancer risk. In doing that, they do not consider how age can modify the type-specific risk of CIN3. The present study aimed to evaluate the age-related distribution of HPV genotypes affecting the risk-assessment in cervical cancer screening programs: non-screening-type-HPV and non-HPV-16/18 in unvaccinated women with CIN3. Methods. Retrospective multi-institutional study, including HPV genotyped women with CIN3 on cone histology treated between 2014 and 2019. The sample was divided into three categories of age: <30, 30-44, >= 45. HPV genotypes were grouped in non-screening-type-HPV (not-including genotypes 16/18/31/33/35/39/45/51/52/ 56/58/59/66/68) and non-HPV-16/18. Associations and trends between different age-groups and HPV genotypes were measured. Results. 1332 women were analyzed. Non-screening-type-HPV CIN3 were 73 (5.5%). Non-HPV-16/18 were found in 417 participants (31.3%). Women over 45 associated with non-screening-type HPV [odds ratio (OR) = 1.87, 95% confidence interval (CI) 1.07-3.25; p = 0.027]. Non-screening-type-HPV prevalence increased significantly with age (3.9% vs 5.1% vs 9.0%, p = 0.016). Women under 30 showed a lower rate of non-HPV-16/18 (OR = 0.65, 95% CI 0.47-0.89; p = 0.007). There was a positive trend with age of non-HPV-16/18 CIN3 (23.6% vs 32.1% vs 38.0%, p = 0.0004). Conclusion. The proportion of CIN3 lesions unrelated to genotypes detected by primary screening tests in-creased with age. This implies that age probably modifies the risk of CIN3 and possibly of cancer associated with HPV types. The risk-based recommendation should take into consideration age to define the management of HPV positive women. (c) 2021 Elsevier Inc. All rights reserved.

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