Assessment of Drug-drug Interactions Between Feminizing Hormone Therapy and Emtricitabine/Tenofovir Alafenamide Concomitantly for Pre-exposure Prophylaxis Among Transgender Women
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- STATUS
- Recruiting
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- End date
- Oct 1, 2022
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- participants needed
- 20
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- sponsor
- Thai Red Cross AIDS Research Centre
Summary
Recent studies have showed that there were significant drug-drug interactions (DDI) from feminizing hormone therapy (FHT) towards emtricitabine/tenofovir disoproxil fumarate (F/TDF)-based pre-exposure prophylaxis (PrEP) among transgender women (TGW). New strategies for PrEP among TGW who use FHT are urgently needed. Because tenofovir alafenamide (TAF) can achieve higher intracellular TFV-DP levels with lower tenofovir plasma concentrations, it is promising that both plasma TFV and intracellular TFV-DP levels might not be significantly affected by FHT. The current study aims to determine the pharmacokinetics DDI between FHT and F/TAF-based PrEP among TGW.
Description
Two full pharmacokinetic (PK) measurements will be performed. Samples collected will include: plasma for estradiol (E2), emtricitabine (FTC), tenofovir (TFV), and tenofovir alafenamide (TAF) measurement; and peripheral blood mononuclear cells (PBMC) for emtricitabine-triphosphate (FTC-TP) and tenofovir-diphosphate (TFV-DP) intracellular quantification.
Details
| Condition | Drug interaction, drug interactions, drug-drug interaction |
|---|---|
| Treatment | Estradiol valerate 2 mg, cyproterone acetate 25 mg |
| Clinical Study Identifier | NCT04590417 |
| Sponsor | Thai Red Cross AIDS Research Centre |
| Last Modified on | 25 January 2021 |
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