Assessment of Drug-drug Interactions Between Feminizing Hormone Therapy and Emtricitabine/Tenofovir Alafenamide Concomitantly for Pre-exposure Prophylaxis Among Transgender Women

• Status: Recruiting
• Trial end date: 2025-10-01

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.

• Phase: N/A

Details

• Lead Sponsor: Thai Red Cross AIDS Research Centre
• Treatments: Cyproterone; Cyproterone Acetate; Estradiol; Estradiol 17 beta-cypionate; Estradiol 3-benzoate; Polyestradiol phosphate