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Sleep Apnea Syndromes clinical trials

The registry lists 1,084 studies for Sleep Apnea Syndromes across more than 10 countries. 171 are recruiting or about to start. 477 of them are mainly about Sleep Apnea Syndromes (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-12. Counting its 3 narrower conditions too, such as Sleep Apnea, Obstructive: 3,028 studies, 575 open.

ClinicalTrials.gov finds 3,190 studies for Sleep Apnea Syndromes. How that becomes 1,083 here

This page counts the studies the registry files under Sleep Apnea Syndromes, and those it files under no condition that list Sleep Apnea Syndromesthemselves. 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. 3,190Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −1,941Filed under a narrower condition, counted on its own pageSleep Apnea, Obstructive 1,780 · Obesity Hypoventilation Syndrome 58 · Sleep Apnea, Central 33
  3. −42List Sleep Apnea Syndromes as a condition, but the registry did not file them under itMost often written as “Obstructive Sleep Apnea of Adult” (9), “Pediatric Sleep Apnea” (5), and “Obstructive Sleep Apnea of Child” (4). The registry filed 10 of them under no condition at all, and the others under other conditions only, most often Disorders of Excessive Somnolence (3) and Motor Activity (3).
  4. −124Match it another way112 name it in the title, 4 in a keyword, and 8 by a synonym or other text the search reads.
  5. 1,083The count on this page

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Status

Completed
618
Status unknown
158
Recruiting
117
Terminated
57
Withdrawn
43
Not yet recruiting
43

Phase

Phase 2
74
Phase 4
66
Phase 3
46
Phase 1
27
Early Phase 1
7

Where

United States
369
France
121
Canada
63
Spain
58
Germany
58
Switzerland
37

Who runs them

VA Office of Research and Development (28) · Brigham and Women's Hospital (22) · ResMed (21) · Sociedad Española de Neumología y Cirugía Torácica (20) · University Hospital, Grenoble (20) · University of Michigan (17) · University of Pennsylvania (15) · Johns Hopkins University (14)

What is being tested here

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

DrugOpenPhase 3All
Acetazolamide2011
Trazodone205
Berobenatide222
Eszopiclone212
Montelukast113
Oxygen102
Zolpidem102
Oxytocin102
Buspirone102
Tirzepatide111

Drug classes tested here Diuretics 2 open · Opioids 1 open · Serotonin receptor agonists 1 open · SGLT2 inhibitors 1 open · GLP-1 receptor agonists 1 open

Coming up

6phase 3 studies under way
58studies finish main data collection within a year1 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 117 Sleep Apnea Syndromes studies recruiting now, 57 (49%) set no upper age limit and 36 (31%) stop at 75 or younger. 24 (21%) take children under 18. 1 (1%) are for women only and 1 (1%) for men only; 27 (23%) take healthy volunteers.

Recruiting studies that take each age, of 117
AgeWomenMen
1019 (16%)19 (16%)
1883 (71%)83 (71%)
3088 (75%)88 (75%)
4090 (77%)90 (77%)
5090 (77%)90 (77%)
6592 (79%)92 (79%)
7583 (71%)83 (71%)
8570 (60%)70 (60%)

Across all 1,084 studies, recruiting or not: 35% stop at 75 or younger and 21% at 65; 15% take children; 3% are for women only and 3% for men only; 22% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Sleep Apnea Syndromes studies take

Of 25 phase 4 interventional studies under Sleep Apnea Syndromes, half reached primary completion within 34 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 246 mo26–56 · 17 studies——
Phase 434 mo18–72 · 25 studies——
Interventional, no phase26 mo11–56 · 268 studies11 mo4–18 · 68 studies42 mo15–60 · 200 studies
Observational43 mo15–83 · 149 studies—43 mo16–83 · 130 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 recruiting3

Newly registered10

Show 5 more

Studies

Recruiting first, then most recently updated. Showing 50 of 1,084. Browse all 1,084 → or search them.