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Adherence and Clinical Correlates in Persons With HIV on TAF — ACT  

Hiv Clinical Trial

Official title:
Adherence and Clinical Correlates in Persons With HIV on TAF

Clinical Trial Summary

This is an observational, 48-week, prospective study of PWH treated with TAF in which the investigators will compare TFV-DP concentrations in DBS in virologically suppressed vs. non-suppressed individuals and evaluate the utility of TFV-DP in DBS to predict future viremia. To accomplish this, the investigators will approach PWH currently taking TAF (which is being prescribed by a primary care physician) and who present to the clinic for regular HIV care and HIV VL assessment. Participants will complete up to 3 visits (at least 2 weeks apart) during the 48-week study follow-up period.

Clinical Trial Description

Antiretroviral (ARV) drug exposure is directly linked to individual host factors, including age, weight, diet, and genetics. However, the main factor influencing long-term drug exposure is drug adherence. Adherence is a strong predictor of HIV treatment outcomes, but measuring adherence is difficult due to the inaccuracy of self-reporting and other commonly used monitoring methods. There is no gold-standard measure to monitor ARV exposure and adherence that has been implemented in clinical practice. Tenofovir diphosphate (TFV-DP), the phosphorylated anabolite of tenofovir (TFV), has distinct pharmacological characteristics that make it an ideal candidate for drug adherence and exposure monitoring. The long half-life of TFV-DP (~17 days) in red blood cells (RBC), which are abundant in dried blood spots (DBS) are properties that make it well suited for monitoring average TFV exposure over time both from tenofovir disoproxil fumarate (TDF) and tenofovir alafenamide (TAF). TFV-DP in DBS in persons with HIV (PWH) on TDF has been associated with viral suppression and is predictive of future viremia, even in patient who are virologically-suppressed. However, data on TFV-DP in DBS from TAF are lacking. To address this gap, this study will assess the association of TFV-DP in DBS from PWH on TAF with clinically-relevant virologic outcomes. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05335590
Study type Observational
Source University of Colorado, Denver
Contact Ryan P Coyle, MPH
Phone 720-695-8020
Email ryan.coyle@cuanschutz.edu
Status Recruiting
Phase
Start date April 25, 2022
Completion date December 2024
View Details
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