ClinicalTrials.gg
Sign In

Sexually Transmitted Diseases clinical trials

The registry lists 523 studies for Sexually Transmitted Diseases across more than 10 countries. 77 are recruiting or about to start. 234 of them are mainly about Sexually Transmitted Diseases (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-12. Counting its 18 narrower conditions too, such as HIV Infections: 8,213 studies, 801 open.

ClinicalTrials.gov finds 7,927 studies for Sexually Transmitted Diseases. How that becomes 522 here

This page counts the studies the registry files under Sexually Transmitted Diseases, and those it files under no condition that list Sexually Transmitted Diseasesthemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 7,927Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −7,353Filed under a narrower condition, counted on its own pageHIV Infections 4,545 · Acquired Immunodeficiency Syndrome 1,831 · Papillomavirus Infections 511 · HIV Seropositivity 123 · Gonorrhea 89 · Condylomata Acuminata 75 · 7 more
  3. −12List Sexually Transmitted Diseases as a condition, but the registry did not file them under itMost often written as “Sexually Transmitted Diseases, Bacterial” (6), “Prevention of Sexually Transmitted Infections” (3), and “STD” (1). The registry filed 6 of them under no condition at all, and the others under other conditions only, most often Sexually Transmitted Diseases, Bacterial (6).
  4. −40Match it another way18 name it in the title, 1 in a keyword, and 21 by a synonym or other text the search reads.
  5. 522The count on this page

Get an email when these change. Save the Sexually Transmitted Diseases studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

Watch these studies
See an example email

Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

One email a week for all your saved searches. Stop any time.

Status

Completed
364
Recruiting
47
Status unknown
36
Not yet recruiting
26
Terminated
21
Active, not recruiting
20

Phase

Phase 2
47
Phase 3
45
Phase 1
25
Phase 4
21
Early Phase 1
2

Where

United States
282
South Africa
30
France
20
Kenya
17
Uganda
17
Spain
12

Who runs them

Emory University (19) · National Institute of Allergy and Infectious Diseases (NIAID) (17) · University of Washington (17) · Centers for Disease Control and Prevention (16) · University of Pennsylvania (13) · University of California, San Francisco (13) · University of North Carolina, Chapel Hill (12) · University of California, Los Angeles (10)

What is being tested here

Drugs under test in Sexually Transmitted Diseases studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Doxycycline5111
Temocillin111
Pentoxifylline111
Nitazoxanide111
Tinidazole101
Acyclovir044
Chondrus crispus carrageenan014
Human Papillomavirus Recombinant Vaccine Quadrivalent, Types 6, 11, 16, 18003
Valacyclovir033
4CMenB vaccine022

Drug classes tested here Reverse transcriptase inhibitors 4

Coming up

9phase 3 studies under way
32studies finish main data collection within a year1 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 47 Sexually Transmitted Diseases studies recruiting now, 29 (62%) set no upper age limit and 16 (34%) stop at 75 or younger. 22 (47%) take children under 18. 13 (28%) are for women only and 13 (28%) for men only; 33 (70%) take healthy volunteers.

Recruiting studies that take each age, of 47
AgeWomenMen
103 (6%)0 (0%)
1832 (68%)33 (70%)
3025 (53%)27 (57%)
4023 (49%)26 (55%)
5022 (47%)26 (55%)
6521 (45%)24 (51%)
7521 (45%)24 (51%)
8521 (45%)24 (51%)

Across all 523 studies, recruiting or not: 50% stop at 75 or younger and 48% at 65; 41% take children; 31% are for women only and 21% for men only; 71% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Sexually Transmitted Diseases studies take

Of 14 phase 4 interventional studies under Sexually Transmitted Diseases, half reached primary completion within 32 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 432 mo15–42 · 14 studies——
Interventional, no phase31 mo16–46 · 182 studies—32 mo17–47 · 172 studies
Observational26 mo15–49 · 47 studies—33 mo15–57 · 42 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 14, 2026.

Results posted2

Newly registered4

Studies

Recruiting first, then most recently updated. Showing 50 of 523. Browse all 523 → or search them.