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Stuttering clinical trials

The registry lists 74 studies for Stuttering across more than 10 countries. 23 are recruiting or about to start. 71 of them are mainly about Stuttering (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10.

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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
29
Recruiting
19
Status unknown
15
Not yet recruiting
3
Active, not recruiting
2
Suspended
2

Phase

Phase 2
9
Phase 3
4
Phase 1
2
Phase 4
1

Where

United States
35
Pakistan
8
Egypt
5
Turkey
4
United Kingdom
3
Belgium
2

Who runs them

University of Michigan (6) · Riphah International University (6) · Assiut University (4) · National Institute on Deafness and Other Communication Disorders (NIDCD) (4) · Sohag University (3) · Boston University Charles River Campus (3) · University of Oxford (2) · NYU Langone Health (2)

What is being tested here

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

DrugOpenPhase 3All
Psilocybin101
Aripiprazole101
Lumateperone101
Ecopipam012
Pagoclone011
Asenapine011

Drug classes tested here Antipsychotics 1 open

Coming up

1phase 3 study under way
8studies 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.

All 8

Who these studies take

Of the 19 Stuttering studies recruiting now, 3 (16%) set no upper age limit and 15 (79%) stop at 75 or younger. 6 (32%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 9 (47%) take healthy volunteers.

Recruiting studies that take each age, of 19
AgeWomenMen
104 (21%)4 (21%)
1814 (74%)14 (74%)
3015 (79%)15 (79%)
4014 (74%)14 (74%)
5014 (74%)14 (74%)
6512 (63%)12 (63%)
754 (21%)4 (21%)
854 (21%)4 (21%)

Across all 74 studies, recruiting or not: 68% stop at 75 or younger and 66% at 65; 43% take children; 0% are for women only and 7% for men only; 47% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Stuttering studies take

Of 37 interventional studies with no phase under Stuttering, half reached primary completion within 28 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase28 mo9–38 · 37 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 recruiting1

Studies

Recruiting first, then most recently updated. Showing 50 of 74. Browse all 74 → or search them.