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Atrial Fibrillation: later-stage trial registry
60 of 204 indexed Atrial Fibrillation trials are currently recruiting, with more weight in Phase 3-4.
Corpus placement: #46 of 28,707 conditions by registered trial count.
204 US clinical trials · 60 currently recruiting · #46 of 28,707 conditions by registered trial count
Atrial Fibrillation: 204 US clinical trials tracked, 60 recruiting.
Atrial Fibrillation is the subject of 204 registered US clinical trials on ClinicalTrials.gov, 60 of them currently open to new participants. 45 are in Phase 3-4 (later-stage) and 19 in Phase 1-2 (earlier-stage). The most active sponsor is The Cleveland Clinic, running 9 of these trials.
Enrollment posture brief
Registry condition atrial-fibrillation
OPEN 60 | RECR 29% | LATE 45 | EARLY 19 | RANK #46 | SPON 9
Volume-matched condition peers
Nearest open-share peer: Addiction (29% recruiting · 17 trials)
Atrial Fibrillation lists 60 open slots (29% of 204 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Atrial Fibrillation on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Atrial Fibrillation is recruiting below its size-band peers.
60 of 204 indexed trials (29.4%) are open to enrollment, against a 37.1% average across 139 conditions with 100+ trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
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Sponsorship of Atrial Fibrillation trials is spread across many organizations.
The Cleveland Clinic accounts for 9 of 204 trials (4.4%). 109 distinct sponsors appear on at least one study for this condition label.
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Typical Atrial Fibrillation enrolment sits around 200 participants.
Median target enrolment is 200 among the 203 trials that report a genuine target (sentinel values excluded). 59 of those (29.1%) plan for fewer than 100 participants.
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Atrial Fibrillation splits between interventional and observational designs.
137 interventional and 67 observational studies make up this index (67.2% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
204 total, page 5 of 5
OFDI Capsule Imaging in Patients With Atrial Fibrillation Undergone Radio Frequency (RF) Ablation
Massachusetts General Hospital
NCT02204566
Advanced Cardiac Imaging To Predict Embolic Stroke On Brain MRI: A Pilot Study
Tulane University
NCT04769310
Reduction of Radiation Dose and Contrast Use During Cryoballoon Pulmonary Vein Isolation
University of Texas Southwestern Medical Center
NCT03786822
Intravenous Tedisamil in the Rapid Conversion of Atrial Fibrillation or Flutter to Normal Sinus Rhythm in Female Subjects
Solvay Pharmaceuticals
NCT00126022
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 7 |
| Phase 2 | 12 |
| Phase 3 | 26 |
| Phase 4 | 19 |
Top Sponsors
Named interventions
Most-linked intervention names on Atrial Fibrillation records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Atrial Fibrillation trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Atrial Fibrillation page
204 registered trials, 60 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 60 Atrial Fibrillation trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- The Cleveland Clinic sponsors the most Atrial Fibrillation trials on record, review their full trial history before evaluating a specific study. See The Cleveland Clinic's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Atrial Fibrillation condition card totals 204 registered trials; most-linked intervention Placebo; top US site state California. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.