Hormone Therapy clinical trials at UCSD

The purpose of this study is to evaluate Pre-Exposure Prophylaxis (PrEP) levels in transgender-identifying or gender non-binary individuals taking versus not taking gender affirming hormone therapy. Subjects who have previously taken F/TDF as PrEP will continue with a fixed dose combination of daily oral F/TAF substituting for F/TDF. Subjects will receive the iTAB text messaging adherence reminders to provide personalized, automated text messages to support and monitor adherence that will vary by participant choice until 12 weeks after switching medication. This study will enroll 60 individuals to take F/TAF as PrEP for 48 weeks.