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Clinical trialNCT03980223CompletedPhase 4Interventional

Evaluation of Doxycycline Post-exposure Prophylaxis to Reduce Sexually Transmitted Infections in PrEP Users and HIV-infected Men Who Have Sex With Men

SponsorUniversity of California, San FranciscoEnrollment641ChlamydiaGonorrheaSyphilis
View the registry record on ClinicalTrials.gov

Summary

The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

3 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • San Francisco City Clinic / San Francisco Department of Public Health

    San Francisco, California, United States

  • University of California, San Francisco / Zuckerberg San Francisco General Hospital/ucsf

    San Francisco, California, United States

  • University of Washington

    Seattle, Washington, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
26 Nov 2019
Primary completion
12 Jun 2023
Completion
12 Jun 2023
Last update posted
12 Jul 2024
Registered enrollment
641
Registry id
NCT03980223

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.