The Ring Study

The Ring Study, a clinical trial now underway by the International Partnership for Microbicides, is designed to determine whether a monthly vaginal ring that delivers the ARV drug dapivirine helps prevent HIV infection in women and is safe for long-term use.

The first efficacy study of a vaginal ring for HIV prevention, The Ring Study has reached its target enrollment of 1,950 women ages 18-45 across six sites in South Africa and one site in Uganda.

The dapivirine ring licensure program

The Ring Study is part of IPM’s broader Dapivirine Ring Licensure Program.

The full licensure program also includes ASPIRE, a "sister" efficacy and safety study of the dapivirine ring being led by the US NIH-funded Microbicide Trials Network (MTN) and currently enrolling across sites in Malawi, South Africa, Uganda, and Zimbabwe. Together, the two studies will involve thousands of women volunteers across Africa and last about three years (2012-2016). 

Should the studies show the ring to be safe and effective, IPM will seek regulatory approval for product licensure and collaborate with key partners to help ensure the ring is made available at low cost as soon as possible to women in developing countries.

The ring

IPM’s ring uses a novel delivery method that slowly releases the ARV dapivirine over time, and is designed to remain in place for at least one month to provide sustained, discreet and easy-to-use protection against HIV.

Learn more about IPM.