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Doxycycline Prophylaxis for Prevention of Sexually Transmitted Infections

NCT06738407 on ClinicalTrials.gov

Study listings come from ClinicalTrials.gov, where sponsors register and update their own studies. A listing does not mean a study is safe or effective, and DatenUS does not recommend any study. Talk with your doctor before joining a clinical trial, and use ClinicalTrials.gov for contact details and full eligibility rules.

Status
Recruiting
Phase
Phase 4
Interventional
Planned enrollment
760
Participants, all sites
U.S. sites
13
In 12 states

Study details

Conditions
Gonorrhea, Chlamydia, Syphilis, Sexually Transmitted Infections (STIs)
Sponsor
Westat (University, hospital or other organization)
Ages
13 to 29 years
Sex
Female only
Healthy volunteers
Not accepted
Start
02/27/2026
Primary completion (expected)
06/30/2029
Last updated by sponsor
10/16/2026

Full eligibility rules, contacts and site names: NCT06738407 on ClinicalTrials.gov

Where the study has sites

Cities with at least one listed U.S. site. Some sites may not be enrolling yet.

  • California: Los Angeles, San Francisco
  • District of Columbia: Washington D.C.
  • Florida: Tampa
  • Georgia: Atlanta
  • Illinois: Chicago
  • Louisiana: New Orleans
  • Maryland: Baltimore
  • New York: New York
  • North Carolina: Chapel Hill
  • Pennsylvania: Philadelphia
  • Tennessee: Memphis
  • Texas: Houston

Frequently asked questions

What does recruiting mean?
Recruiting means the study is currently enrolling participants. Not yet recruiting means it has been registered but has not started enrolling. Enrolling by invitation means participants are selected by the study team rather than through open enrollment.
How do I join a clinical trial?
Read the full eligibility criteria and contact information on ClinicalTrials.gov, then talk with your doctor about whether a study may be right for you. The study team decides who can enroll.

Source: ClinicalTrials.gov, National Library of Medicine · Last updated 10/16/2026