Condition
Sexually Transmitted Infections (STIs) clinical trials and research
As of November 12, 2026, Find a Trial lists 7 Sexually Transmitted Infections (STIs) clinical trials that are recruiting, at sites in 4 countries (most in Thailand (4), United States (1), Spain (1)). By phase: Phase 4 (1), Phase 3 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 7Clinical trials
- 4Countries
Newest Sexually Transmitted Infections (STIs) clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Host-led harm reduction for men who have sex with men who engage in chemsex in Bangkok | — | Pathum Wan, Bangkok | Recruiting | Apr 6, 2026 |
| Transgender-tailored harm reduction and PrEP service for people who engage in chemsex in Bangkok | — | Pathum Wan, Bangkok | Recruiting | Apr 6, 2026 |
| Adding sexual-pleasure conversations to harm reduction services for MSM and transgender people who do chemsex in Thailand | — | Pathum Wan, Bangkok | Recruiting | Apr 3, 2026 |
| Developing transgender-tailored chemsex harm-reduction services in Thailand | — | Pathum Wan, Bangkok | Recruiting | Apr 1, 2026 |
| Offering STI testing to boost PrEP use during and after pregnancy | Phase 3 | Gaborone | Recruiting | Apr 9, 2025 |
| Predicting STIs in people using HIV prevention medication in Spain | — | Almería and 25 other locations | Recruiting | Mar 6, 2025 |
| Doxycycline Prophylaxis to Prevent STIs in Adolescent and Young Women | Phase 4 | Los Angeles, California and 12 other locations | Recruiting | Dec 17, 2024 |
All recruiting trials (7)
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Host-led harm reduction for men who have sex with men who engage in chemsex in Bangkok
This project will try a host-led harm reduction approach to reduce substance-related, sexual, mental health, and legal harms among men who have sex with men who engage in chemsex in Bangkok.
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Transgender-tailored harm reduction and PrEP service for people who engage in chemsex in Bangkok
This project will try a comprehensive harm-reduction service tailored for transgender and non-binary adults in Bangkok who engage in chemsex or substance use to increase PrEP use, reduce HIV/STIs, and address mental health and socio-legal needs.
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Adding sexual-pleasure conversations to harm reduction services for MSM and transgender people who do chemsex in Thailand
This project will try using a 'Pleasuremeter' to guide sexual-pleasure conversations in harm reduction services for MSM and transgender people who engage in chemsex or substance use in Thailand to see if it improves sexual health, substance use, and related outcomes.
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Developing transgender-tailored chemsex harm-reduction services in Thailand
This project will try to understand chemsex experiences among transgender adults in Thailand to help design harm-reduction services that meet their needs.
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Offering STI testing to boost PrEP use during and after pregnancy
This trial will test whether offering STI testing together with PrEP options helps pregnant women in Botswana start and keep using PrEP during pregnancy and up to 9 months after delivery.
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Predicting STIs in people using HIV prevention medication in Spain
This study is trying to see if a new way to predict sexually transmitted infections can help people using HIV prevention medication in Spain stay healthier.
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Doxycycline Prophylaxis to Prevent STIs in Adolescent and Young Women
This trial tests whether taking doxycycline after sex or every week can reduce gonorrhea, chlamydia, and early syphilis in girls and young women, compared with usual care.
Related topics
Quick answers
How many Sexually Transmitted Infections (STIs) clinical trials are recruiting right now?
7, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 4 countries. The most sites are in Thailand (4 trials), United States (1 trial), Spain (1 trial), Botswana (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 4: 1, Phase 3: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.