Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Cognitive Symptom: early-phase trial registry
2 of 4 indexed Cognitive Symptom trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #4,115 of 28,707 conditions by registered trial count.
4 US clinical trials · 2 currently recruiting · #4,115 of 28,707 conditions by registered trial count
Cognitive Symptom: 4 US clinical trials tracked, 2 recruiting.
Cognitive Symptom is the subject of 4 registered US clinical trials on ClinicalTrials.gov, 2 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 1 in Phase 1-2 (earlier-stage). The most active sponsor is David Brunk, PA-C, MMS, running 1 of these trials.
Enrollment posture brief
Registry condition cognitive-symptom
OPEN 2 | RECR 50% | LATE 0 | EARLY 1 | RANK #4115 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Abdominal Aortic Aneurysms (50% recruiting · 6 trials)
Cognitive Symptom lists 2 open slots (50% of 4 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 Cognitive Symptom 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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Cognitive Symptom is recruiting above its size-band peers.
2 of 4 indexed trials (50%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
Open and recent trials
4 total, page 1 of 1
Personalized Brain Stimulation to Treat Chronic Concussive Symptoms
University of California, Los Angeles
NCT06073886
Using Non-invasive Brain Stimulation to Treat Word Finding Difficulty in Chronic Traumatic Brain Injury
Beth Israel Deaconess Medical Center
NCT06848140
Acute Cognitive Changes During Atrial Fibrillation Episodes (AFCOG)
David Brunk, PA-C, MMS
NCT04033510
Cognitive Enhancement in Depression (The COG-D Study)
Vanderbilt University Medical Center
NCT05400512
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Cognitive Symptom records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Cognitive Symptom 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 Cognitive Symptom page
4 registered trials, 2 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 2 Cognitive Symptom trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- David Brunk, PA-C, MMS sponsors the most Cognitive Symptom trials on record, review their full trial history before evaluating a specific study. See David Brunk, PA-C, MMS'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 Cognitive Symptom condition card totals 4 registered trials; most-linked intervention tDCS (sham stimulation); top US site state Tennessee. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.