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Syncope clinical trials

The registry lists 201 studies for Syncope across more than 10 countries. 36 are recruiting or about to start. 93 of them are mainly about Syncope (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-03. Counting its narrower condition Syncope, Vasovagal too: 256 studies, 55 open.

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Status

Completed
114
Status unknown
29
Recruiting
26
Terminated
9
Not yet recruiting
7
Withdrawn
6

Phase

Phase 2
12
Phase 3
10
Phase 4
3
Phase 1
2

Where

United States
66
Italy
36
Canada
24
Germany
22
France
20
United Kingdom
17

Who runs them

Biotronik SE & Co. KG (9) · Istituto Auxologico Italiano (7) · Abbott Medical Devices (6) · Medtronic Cardiac Rhythm and Heart Failure (5) · University of Calgary (5) · National Institute of Neurological Disorders and Stroke (NINDS) (4) · Ottawa Hospital Research Institute (4) · NHS Lothian (3)

What is being tested here

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

DrugOpenPhase 3All
Ondansetron101
Ampreloxetine033
Clobazam022
Midodrine012
QCC374002
Mirabegron001
Acarbose001
Ajmaline001
Propranolol001
Metoprolol001

Coming up

1phase 3 study under way
13studies 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 26 Syncope studies recruiting now, 17 (65%) set no upper age limit and 4 (15%) stop at 75 or younger. 3 (12%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 3 (12%) take healthy volunteers.

Recruiting studies that take each age, of 26
AgeWomenMen
101 (4%)1 (4%)
1822 (85%)22 (85%)
3023 (88%)23 (88%)
4024 (92%)24 (92%)
5025 (96%)25 (96%)
6524 (92%)24 (92%)
7522 (85%)22 (85%)
8520 (77%)20 (77%)

Across all 201 studies, recruiting or not: 20% stop at 75 or younger and 19% at 65; 23% take children; <1% are for women only and 1% for men only; 13% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Syncope studies take

Of 48 interventional studies with no phase under Syncope, half reached primary completion within 28 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase28 mo13–52 · 48 studies—39 mo13–52 · 39 studies
Observational34 mo13–… · 44 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.

Newly registered2

Studies

Recruiting first, then most recently updated. Showing 50 of 201. Browse all 201 → or search them.