Vaginal Ring Might Shield Girls From HIV for 3 Months

Vaginal Ring Could Protect Women From HIV for 3 Months

TUESDAY, March 9, 2021 (HealthDay Information) — A vaginal ring that slowly releases an antiviral remedy may shield ladies towards HIV for as much as three months, a preliminary trial suggests.

It assessed two formulations of a vaginal ring that releases the antiretroviral dapivirine within the vagina over the course of 90 days. One model contained 100 milligrams (mg) of dapivirine and the opposite contained 200 mg.

The trial was performed at two U.S. websites affiliated with the U.S. Nationwide Institutes of Well being-funded Microbicide Trials Community (MTN).

It included 49 wholesome HIV-negative ladies. They had been divided into three teams: one used the 100 mg dapivirine ring repeatedly for 13 weeks; a second group used the 200 mg ring repeatedly for 13 weeks; and a 3rd group used a 30-day ring, changing it each 4 weeks through the research interval.

All three rings had been nicely tolerated by the members and there have been no security issues. In comparison with these with the month-to-month ring, these with the 2 90-day rings had 1.3 to 1.9 occasions larger concentrations of dapivirine in blood plasma and 1.5 to 2.9 occasions larger ranges of the drug in vaginal fluid, in addition to larger concentrations of the drug in cervical tissue.


The outcomes — to be introduced Tuesday at a digital assembly of the Convention on Retroviruses and Opportunistic Infections — recommend that the 90-day ring might present long-acting and sustained HIV safety, in line with the researchers. However such analysis is taken into account preliminary till revealed in a peer-reviewed journal.

The three-month ring builds on the event by the nonprofit Worldwide Partnership for Microbicides (IPM) of a month-to-month dapivirine ring, which final 12 months acquired a optimistic opinion from the European Medicines Company for its use amongst ladies aged 18 and older in growing international locations.

Quickly after, the month-to-month ring was added to the World Well being Group record of pre-qualified medicines, and earlier this 12 months WHO advisable the ring as one other HIV prevention selection for girls at excessive threat of HIV.

IPM is in search of approval of the month-to-month dapivirine ring in japanese and southern Africa, and the primary of those choices could possibly be made by mid-year. IPM can be in search of regulatory approval of the ring from the U.S. Meals and Drug Administration.


“Regulatory approval of the month-to-month ring could be an unbelievable milestone for girls, who’ve been the face of the HIV epidemic in a lot of the world and wish and need to have a spread of protected and efficient strategies,” research chair Dr. Albert Liu stated in an MTN information launch. He’s medical analysis director on the San Francisco Division of Public Well being.

“Hopefully, an extended-duration dapivirine ring that ladies exchange each three months may be but an alternative choice accessible to ladies within the not-too-distant future,” Liu stated.

Extra info

The U.S. Workplace on Girls’s Well being has extra about ladies and HIV prevention.

SOURCE: Microbicide Trials Community, information launch, March 9, 2021

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