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MTN-024/IPM 031 is a multi-center, two-arm, randomized, double blind, placebo-controlled Phase 2a trial.  The study enrolled 96 healthy, HIV-uninfected, post-menopausal females, 45-65 (inclusive) years of age.  They were randomized in a 3:1 ratio to one of the following study groups: placebo VR or dapivirine (25 mg) VR.  Each enrolled participant was followed for approximately 13 weeks (12 weeks on study product and a final phone call one week after end of study product use). In addition to the primary objective stated above, the MTN-024/IPM 031 trial will evaluate additional secondary objectives including acceptability of and adherence to a dapivirine (25 mg) VR when inserted once every 4 weeks for a 12 week period in HIV uninfected postmenopausal women, as well as local and systemic dapivirine exposure.

The dapivirine (25 mg) VR is currently being evaluated in ASPIRE and other studies in women who are 18 to 40 years of age.  The FDA has requested additional safety data in post-menopausal women.  MTN-024/IPM 031 will fill a void in the dapivirine VR research portfolio, by providing the necessary safety and acceptability data in sexually-active, postmenopausal females.

Protocol Chair(s)
Chen, Beatrice (Protocol Chair)
Protocol Title
Phase 2a Safety Study of a Vaginal Matrix Ring Containing Dapivirine in a Post-Menopausal Female Population
DAIDS Protocol ID
Participants off Study and Primary Analysis Completed
Vaginal Ring
Study Focus/Product Administration
Study Type
Study Phase
Phase IIA
United States
Post Menopause  
Women (cisgender women, non‐transgender women)
Division of AIDS, US National Institute of Allergy and Infectious Diseases
US Eunice Kennedy Shriver National Institute of Child Health and Human Development
US National Institute of Mental Health
US National Institutes of Health
International Partnership for Microbicides