Impact of Hormonal Contraceptives on HPV Dynamics in Adolescent Girls and Young Women: Insights from a Randomized Controlled Sub-Study in South Africa.

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Tác giả: Christina Balle, Linda-Gail Bekker, Katherine Gill, Anna-Ursula Happel, Heather B Jaspan, Iyaloo Konstantinus, Zizipho Z A Mbulawa, Jo-Ann S Passmore, Keletso Phohlo, Tanya Pidwell, Ongeziwe Taku, Ramla F Tanko, Anna-Lise Williamson

Ngôn ngữ: eng

Ký hiệu phân loại: 276 Christianity in Africa Christian church in Africa

Thông tin xuất bản: United States : medRxiv : the preprint server for health sciences , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 218621

OBJECTIVES: Human papillomavirus (HPV) is the leading cause of cervical cancer, with adolescent girls and young women (AGYW) in sub-Saharan Africa carrying a disproportionately high burden of infection. Hormonal contraceptives may influence HPV acquisition, persistence, and clearance, but evidence remains inconclusive. This sub-study aimed to evaluate the impact of different hormonal contraceptives on HPV prevalence and genotype distribution in AGYW. METHODS: Ninety-eight HIV-seronegative AGYW aged 15-19 years from South Africa were randomized to receive one of three hormonal contraceptive methods: norethisterone enanthate (Net-EN) injectable, combined oral contraceptive pills (COCPs), or the etonorgesterol/ethinyl estradiol combined contraceptive vaginal ring (CCVR). Cervical DNA samples were collected at baseline and after 16 weeks for HPV genotyping using the HPV Direct Flow Chip test. HPV prevalence, persistence, clearance, and acquisition were analyzed across contraceptive methods. RESULTS: At baseline, HPV prevalence was high (94.9%), with no differences among contraceptive arms. After 16 weeks, HPV prevalence remained high (89.5%) across groups. No significant differences were observed in overall HPV prevalence or genotype distribution by contraceptive method. Longitudinal analysis revealed that AGYW using Net-EN tended to have a higher cumulative number of high-risk HPV (HR-HPV) genotypes that cleared whereas those using CCVR acquired more HR-HPV types and had greater HR-HPV persistence compared to other groups. CONCLUSIONS: This study highlights the high burden of HPV among South African AGYW. However, different hormonal contraceptive methods did not significantly influence HR-HPV dynamics.
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