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Communication clinical trials

The registry lists 719 studies for Communication across more than 10 countries. 159 are recruiting or about to start. 367 of them are mainly about Communication (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10. Counting its 10 narrower conditions too, such as Speech: 1,508 studies, 402 open.

ClinicalTrials.gov finds 3,798 studies for Communication. How that becomes 719 here

This page counts the studies the registry files under Communication, and those it files under no condition that list Communicationthemselves. 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. 3,798Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −615Filed under a narrower condition, counted on its own pageSpeech 182 · Language 137 · Literacy 87 · Crying 37 · Narration 37 · Cell Phone Use 34 · 4 more
  3. −134List Communication as a condition, but the registry did not file them under itMost often written as “Communication Disorders” (16), “Health Communication” (13), and “Multidisciplinary Communication” (10). The registry filed 1 of them under no condition at all, and the others under other conditions only, most often Communication Disorders (25) and Teach-Back Communication (13).
  4. −2,330Match it another way857 name it in the title, 318 in a keyword, and 1,155 by a synonym or other text the search reads.
  5. 719The count on this page102 of them list Communication in their own words; the registry filed them under no condition.

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Status

Completed
462
Recruiting
89
Not yet recruiting
56
Status unknown
37
Active, not recruiting
32
Withdrawn
15

Phase

Phase 2
14
Phase 3
9
Phase 1
8
Phase 4
2

Where

United States
369
Turkey
40
Canada
35
France
21
Taiwan
18
United Kingdom
16

Who runs them

University of Wisconsin, Madison (16) · University of Pennsylvania (15) · Johns Hopkins University (11) · VA Office of Research and Development (11) · University of Pittsburgh (10) · Duke University (10) · University of Chicago (9) · Memorial Sloan Kettering Cancer Center (9)

What is being tested here

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

DrugOpenPhase 3All
Ethanol101
Cycloserine011
Memantine001

Coming up

3phase 3 studies under way
70studies finish main data collection within a year2 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 89 Communication studies recruiting now, 54 (61%) set no upper age limit and 28 (31%) stop at 75 or younger. 32 (36%) take children under 18. 6 (7%) are for women only and 1 (1%) for men only; 35 (39%) take healthy volunteers.

Recruiting studies that take each age, of 89
AgeWomenMen
1013 (15%)13 (15%)
1860 (67%)57 (64%)
3059 (66%)57 (64%)
4058 (65%)56 (63%)
5061 (69%)59 (66%)
6563 (71%)59 (66%)
7561 (69%)58 (65%)
8559 (66%)57 (64%)

Across all 719 studies, recruiting or not: 28% stop at 75 or younger and 25% at 65; 32% take children; 5% are for women only and 1% for men only; 46% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Communication studies take

Of 394 interventional studies with no phase under Communication, half reached primary completion within 18 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase18 mo6–36 · 394 studies—18 mo6–36 · 390 studies
Observational25 mo9–61 · 53 studies—25 mo10–61 · 51 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 recruiting2

Results posted1

Stopped1

Newly registered6

Show 1 more

Studies

Recruiting first, then most recently updated. Showing 50 of 719. Browse all 719 → or search them.