The decision, backing the earlier recommendation of the FDA’s Antimicrobial Drugs Advisory Committee, was based upon results from DISCOVER, a pivotal, multiyear, global phase 3 clinical trial that evaluated the safety and efficacy of Descovy (emtricitabine 200 mg and tenofovir alafenamide 25-mg tablets for PrEP, compared with Truvada (emtricitabine 200 mg and tenofovir disoproxil fumarate 300-mg tablets).
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DISCOVER included more than 5,300 adult cisgender men who have sex with men or transgender women who have sex with men.
In the trial, Descovy achieved noninferiority to Truvada.
Descovy has a Boxed Warning in its U.S. product label regarding the risk of posttreatment acute exacerbation of hepatitis B, according to the company.
The Descovy label also includes a Boxed Warning regarding the risk of drug resistance with PrEP use in undiagnosed early HIV-1 infection. The effectiveness of Descovy for PrEP in individuals at risk of HIV-1 from receptive vaginal sex was not tested, and thus cisgender women at risk for infection from vaginal sex were not included in the population for which the drug was approved.
The Descovy label and safety information is available here.
The FDA version of the announcement is available here.