← Eichor
Study identifier: NCT06414408 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Randomized Directly Observed Therapy Study to Interpret Clinical Trials of Doxy-PEP

Condition: Sexually Transmitted Diseases, Bacterial  ·  Sponsor: University of California, San Francisco

PhaseEARLY_Phase 1
Planned participants48
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersYes

About this study

Rates of bacterial sexually transmitted infections (STIs) are rising globally, demanding innovative interventions beyond the scope of current efforts to prevent STIs. The United States Doxycycline Post-exposure Prophylaxis (DoxyPEP) Study has demonstrated the efficacy of doxycycline post-exposure prophylaxis (PEP) among men who have sex with men and transgender women; but puzzlingly, doxycycline PEP was found ineffective in cisgender women in the Kenyan doxycycline Post-Exposure Prophylaxis (dPEP) study, with preliminary data suggesting the low medication adherence may explain the null result. By study end, the investigators will have developed adherence measurement methods for doxycycline in hair, blood, and urine, and will use these techniques to help interpret the Kenyan dPEP study, and to examine the relative performance of these methods within the United States DoxyPEP trial, establishing adherence metrics for current and future rollout studies of doxycycline post-exposure prophylaxis

This description comes directly from the study's public registry record.

Talk to the study team

Shivani Mahuvakar  ·  415-878-6384  ·  DOTDoxyPEP@ucsf.edu

Always discuss trial participation with your own doctor first.

Locations (1)

University of California, San Francisco/San Francisco General HospitalSan Francisco, California, United StatesRecruiting

Follow this study

Get one email when the public record changes — results posted, or the study's status changes. Nothing else, ever.

We email about this public record only. Unsubscribe anytime with one click. Never medical advice.

Is this your study? This page was generated automatically from the public registry record. Sponsors can claim it — free — to add branding and verified contact routing. Claim this page →

This page is independently generated by Eichor from the public ClinicalTrials.gov record and re-synced daily. It is not the sponsor's official website unless claimed. Nothing here is medical advice; eligibility is always determined by the study team — talk to your own doctor first.

Source record: clinicaltrials.gov/study/NCT06414408