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  • Title: Adherence and acceptability in MTN 001: a randomized cross-over trial of daily oral and topical tenofovir for HIV prevention in women.
    Author: Minnis AM, Gandham S, Richardson BA, Guddera V, Chen BA, Salata R, Nakabiito C, Hoesley C, Justman J, Soto-Torres L, Patterson K, Gomez K, Hendrix CW.
    Journal: AIDS Behav; 2013 Feb; 17(2):737-47. PubMed ID: 23065145.
    Abstract:
    We compared adherence to and acceptability of daily topical and oral formulations of tenofovir (TFV) used as pre-exposure prophylaxis (PrEP) for HIV prevention among women in South Africa, Uganda and the United States. 144 sexually active, HIV-uninfected women participated in a cross-over study of three regimens: oral tablet, vaginal gel, or both. We tested for differences in adherence and evaluated product acceptability. Self-reported adherence for all regimens was high (94 %), but serum TFV concentrations indicated only 64 % of participants used tablets consistently. Most women in the U.S. (72 %) favored tablets over gel; while preferences varied at the African sites (42 % preferred gel and 40 % tablets). Findings indicate a role for oral and vaginal PrEP formulations and highlight the importance of integrating pharmacokinetics-based adherence assessment in future trials. Biomedical HIV prevention interventions should consider geographic and cultural experience with product formulations, partner involvement, and sexual health benefits that ultimately influence use.
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