Efficacy of Maraviroc-Containing HIV PrEP in Women Evaluated

HealthDay News — Maraviroc (MVC)-containing HIV pre-exposure prophylaxis (PrEP) regimens are well tolerated for preventing HIV infection in uninfected women, according to a study published in the Annals of Internal Medicine.

Roy M. Gulick, MD, MPH, from Weill Cornell Medicine in New York City, and colleagues conducted a phase 2 study of 4 antiretroviral regimens used as PrEP in 12 clinical research sites among HIV-uninfected women reporting condom-less vaginal or anal intercourse with at least one man with HIV infection or unknown serostatus. Participants received MVC only, MVC-emtricitabine (FTC), MVC-tenofovir disoproxil fumarate (TDF), and TDF-FTC (control).

Eighty-five percent of the 188 participants completed follow-up; 19% discontinued their regimen prematurely. The researchers observed no difference among regimens in the number discontinuing and the time to discontinuation. Five MVC, 13 MVC-FTC, 9 MVC-TDF, and 8 TDF-FTC participants had grade 3 or 4 adverse events; the rates did not differ among regimens. The MVC-TDF group had one death by suicide, which was judged not to be related to study drugs. Sixty percent of the 126 available plasma samples at week 48 showed detectable drug concentrations. There were no new HIV infections.

“Maraviroc-containing PrEP regimens were safe and well tolerated compared with TDF-FTC in US women,” the authors write. “Maraviroc-containing PrEP for women may warrant further study.”

Several authors disclosed financial ties to the pharmaceutical industry.

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Gulick RM, Wilkin TJ, Chen YQ, et al. Safety and tolerability of Maraviroc-containing regimens to prevent HIV infection in women: a phase 2 randomized trial. Ann Intern Med. 2017 Sep 19;167(6):384-393.