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Patient Participation clinical trials

The registry lists 409 studies for Patient Participation across more than 10 countries. 100 are recruiting or about to start. 100 of them are mainly about Patient Participation (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-12.

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

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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
244
Recruiting
48
Not yet recruiting
41
Status unknown
36
Active, not recruiting
12
Enrolling by invitation
11

Phase

Phase 3
5
Phase 1
4
Phase 2
3
Phase 4
2
Early Phase 1
1

Where

United States
154
Turkey
41
Canada
33
Denmark
19
Spain
15
Germany
14

Who runs them

VA Office of Research and Development (9) · University Health Network, Toronto (7) · Johns Hopkins University (6) · University of Aarhus (6) · University of Washington (6) · Radboud University Medical Center (5) · Yale University (5) · University of California, San Francisco (5)

What is being tested here

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

DrugOpenPhase 3All
Methadone001
Liposomal doxorubicin001
Doxorubicin001
Melphalan001
Bortezomib001

Coming up

1phase 3 study under way
33studies finish main data collection within a year

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

Who these studies take

Of the 48 Patient Participation studies recruiting now, 32 (67%) set no upper age limit and 9 (19%) stop at 75 or younger. 10 (21%) take children under 18. 6 (13%) are for women only and 1 (2%) for men only; 11 (23%) take healthy volunteers.

Recruiting studies that take each age, of 48
AgeWomenMen
106 (13%)7 (15%)
1838 (79%)34 (71%)
3035 (73%)31 (65%)
4036 (75%)31 (65%)
5038 (79%)33 (69%)
6541 (85%)36 (75%)
7538 (79%)34 (71%)
8536 (75%)32 (67%)

Across all 409 studies, recruiting or not: 22% stop at 75 or younger and 16% at 65; 16% take children; 8% are for women only and 2% for men only; 24% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Patient Participation studies take

Of 226 interventional studies with no phase under Patient Participation, half reached primary completion within 20 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase20 mo9–34 · 226 studies—21 mo9–34 · 219 studies
Observational17 mo8–37 · 44 studies—15 mo8–37 · 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.

Started recruiting1

Results posted4

Studies

Recruiting first, then most recently updated. Showing 50 of 409. Browse all 409 → or search them.