Skip to main content

Find trials
Conditions
Drugs
Sponsors
Institutions
Countries
Phases

AzTrials

Find trialsSearch every registered study
ConditionsTrials by disease or condition
DrugsTrials by drug or intervention
SponsorsCompany pipelines and studies
InstitutionsUniversities, hospitals and agencies
CountriesTrials by where they run
PhasesPhase 1 to Phase 4, explained

Browse

Recruitment status
Study types

About

About AzTrials
Data and methodology
Saved trials

Home
Countries

Browse

Clinical Trials by Country

Studies with at least one site in each country. Pick a country to see what is open to enrolment, who runs it and how far along it is.

154 listed

Starting with Y

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
0–9

Yemen 44

Source: ClinicalTrials.gov (U.S. National Library of Medicine)

Reference information only, as the sponsor registered it. Only a study’s team can confirm who can take part. How AzTrials handles data.

What is being tested, where, by whom, and who can take part. Every record comes from ClinicalTrials.gov, the registry run by the U.S. National Library of Medicine, and is refreshed every night.

Thinking about joining a trial? Take the record to your doctor and contact the study team listed on it.

Find trials

Search all trials
By condition
By country
By drug or intervention

Browse

Pharmaceutical sponsors
Research institutions
Trial phases
Recruitment status
Study types

About

About AzTrials
Data and methodology
Saved trials

AzTrials is independent and is not affiliated with or endorsed by the NLM, NIH, FDA or any trial sponsor. Information is for reference and is not medical advice.

© 2026 AzTrials
Privacy Policy
Terms of Use
Medical Disclaimer

AzTrials uses cookies for analytics and advertising. You can accept or reject them; the site works either way. Privacy Policy.

Free account

Keep searching with a free account

You’ve used your 3 free searches for this session. Log in or create a free AzTrials account to keep searching clinical trials and save the ones you want to follow.

Create a free account Log in