Reduced Dose Study of the Nine-Valent HPV Vaccine for Women Living with HIV Comparing Two versus Three Doses for Immune Response and Safety

What this Trial Is About

This research aims to study the immune response to the nonavalent HPV 9vHPV vaccine in women living with HIV WLWH, a group particularly vulnerable to HPV and cervical cancer. There is limited data on reduced-dose schedules of the 9vHPV vaccine in this population, which is important as the previously used quadrivalent HPV vaccine has been discontinued. The study seeks to inform global strategies for cervical cancer elimination by evaluating different dosing schedules in WLWH aged 18 to 45 years. Participants will be randomly assigned to one of two groups one group will receive three doses of the 9vHPV vaccine following the routine schedule at 0, 2, and 6 months, while the other group will receive two doses at 0 and 6 months, with a third dose at month 12. This design follows current recommendations and allows comparison of immune responses between the routine and extended dosing schedules. During the two-year follow-up, participants will undergo regular assessments to measure immune responses, specifically anti-HPV1618 antibody levels at months 7 and 24. Researchers will also evaluate vaccine safety, effectiveness, and attitudes toward self-collected HPV samples. Surveys will assess vaccine acceptability and comfort. The study includes monitoring for adverse events and aims to provide data to improve HPV vaccination programs for WLWH globally.

A Study of Reduced Dosing of the Nonavalent HPV Vaccine in Women Living With HIV