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Behavior clinical trials

The registry lists 1,573 studies for Behavior across more than 10 countries. 313 are recruiting or about to start. 729 of them are mainly about Behavior (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10. Counting its 130 narrower conditions too, such as Motor Activity: 41,787 studies, 8,603 open.

ClinicalTrials.gov finds 50,874 studies for Behavior. How that becomes 1,572 here

This page counts the studies the registry files under Behavior, and those it files under no condition that list Behaviorthemselves. 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. 50,874Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −39,295Filed under a narrower condition, counted on its own pageMotor Activity 9,691 · Depression 7,973 · Psychological Well-Being 1,609 · Smoking Cessation 1,516 · Smoking 1,004 · Breast Feeding 984 · 123 more
  3. −452List Behavior as a condition, but the registry did not file them under itMost often written as “REM Sleep Behavior Disorder” (60), “Behavior Problem” (26), and “Child Behavior Disorders” (19). The registry filed them under other conditions only, most often REM Sleep Behavior Disorder (88) and Mental Disorders (72).
  4. −9,555Match it another way1,731 name it in the title, 630 in a keyword, and 7,194 by a synonym or other text the search reads.
  5. 1,572The count on this page165 of them list Behavior in their own words; the registry filed them under no condition.

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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

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Status

Completed
1,007
Recruiting
178
Status unknown
137
Not yet recruiting
108
Active, not recruiting
58
Withdrawn
30

Phase

Phase 2
44
Phase 3
33
Phase 4
19
Phase 1
16
Early Phase 1
4

Where

United States
584
Turkey
140
France
68
Canada
62
United Kingdom
53
Spain
42

Who runs them

Cairo University (16) · University of Michigan (15) · Geisinger Clinic (13) · University of Colorado, Denver (11) · Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) (11) · University of Minnesota (11) · Stanford University (9) · Emory University (9)

What is being tested here

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

DrugOpenPhase 3All
Midazolam122
Ketamine101
Alpha-casozepine111
Orforglipron111
Coenzyme Q10101
Beta-hydroxybutyrate-1,3-butanediol monoester101
Liraglutide101
Vitamin D101
Probiotic101
Psilocybin002

Drug classes tested here Serotonin receptor agonists 3 · Psychedelics 3

Coming up

5phase 3 studies under way
119studies finish main data collection within a year4 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 178 Behavior studies recruiting now, 76 (43%) set no upper age limit and 74 (42%) stop at 75 or younger. 58 (33%) take children under 18. 19 (11%) are for women only and 6 (3%) for men only; 100 (56%) take healthy volunteers.

Recruiting studies that take each age, of 178
AgeWomenMen
1036 (20%)36 (20%)
18121 (68%)107 (60%)
30116 (65%)105 (59%)
40113 (63%)103 (58%)
50108 (61%)104 (58%)
65115 (65%)109 (61%)
75103 (58%)99 (56%)
8590 (51%)86 (48%)

Across all 1,573 studies, recruiting or not: 46% stop at 75 or younger and 42% at 65; 36% take children; 12% are for women only and 3% for men only; 61% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Behavior studies take

Of 757 interventional studies with no phase under Behavior, half reached primary completion within 13 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase13 mo5–32 · 757 studies—14 mo5–32 · 741 studies
Observational17 mo6–53 · 119 studies—16 mo6–57 · 113 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 11, 2026.

Started recruiting5

Results posted2

Stopped2

Newly registered13

Show 8 more

Studies

Recruiting first, then most recently updated. Showing 50 of 1,573. Browse all 1,573 → or search them.