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Strong Relationship Between Oral Dose And Tenofovir Hair Levels In A Randomized Trial: Hair As A Potential Adherence Measure For Pre-Exposure Prophylaxis (Prep)., Albert Y. Liu, Qiyun Yang, Yong Huang, Peter Bacchetti, Peter L. Anderson, Chengshi Jin, Kathy Goggin, Kristefer Stojanovski, Robert Grant, Susan P. Buchbinder, Ruth M. Greenblatt, Monica Gandhi
Strong Relationship Between Oral Dose And Tenofovir Hair Levels In A Randomized Trial: Hair As A Potential Adherence Measure For Pre-Exposure Prophylaxis (Prep)., Albert Y. Liu, Qiyun Yang, Yong Huang, Peter Bacchetti, Peter L. Anderson, Chengshi Jin, Kathy Goggin, Kristefer Stojanovski, Robert Grant, Susan P. Buchbinder, Ruth M. Greenblatt, Monica Gandhi
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BACKGROUND: Pre-exposure prophylaxis (PrEP) trials using tenofovir-based regimens have demonstrated that high levels of adherence are required to evaluate efficacy; the incorporation of objective biomarkers of adherence in trial design has been essential to interpretation, given the inaccuracy of self-report. Antiretroviral measurements in scalp hair have been useful as a marker of long-term exposure in the HIV treatment setting, and hair samples are relatively easy and inexpensive to collect, transport, and store for analysis. To evaluate the relationship between dose and tenofovir concentrations in hair, we examined the dose proportionality of tenofovir in hair in healthy, HIV-uninfected adults.
METHODS: A …