Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Parkinson Disease (PD): early-phase trial registry
4 of 4 indexed Parkinson Disease (PD) 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 · 4 currently recruiting · #4,115 of 28,707 conditions by registered trial count
Parkinson Disease (PD): 4 US clinical trials tracked, 4 recruiting.
Parkinson Disease (PD) is the subject of 4 registered US clinical trials on ClinicalTrials.gov, 4 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 Cristina Colon-Semenza, running 1 of these trials.
Enrollment posture brief
Registry condition parkinson-disease-pd
OPEN 4 | RECR 100% | LATE 0 | EARLY 1 | RANK #4115 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Aortic Arch Aneurysm (100% recruiting · 5 trials)
Parkinson Disease (PD) lists 4 open slots (100% 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 Parkinson Disease (PD) 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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Parkinson Disease (PD) is recruiting above its size-band peers.
4 of 4 indexed trials (100%) 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
Safety, PK and Biodistribution of 18F-OP-801 in Patients With ALS, AD, MS, PD and Healthy Volunteers
Ashvattha Therapeutics
NCT05395624
Daily Amino Acid Supplementation for People With Parkinson's Disease
Cristina Colon-Semenza
NCT07115563
Robotic Apparel to Prevent Freezing of Gait in Parkinson Disease
Harvard Medical School (HMS and HSDM)
NCT06602544
Safety and Usability of the Cionic Neural Sleeve for Parkinson's Disease
Cionic
NCT07284823
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Parkinson Disease (PD) records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Parkinson Disease (PD) 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 Parkinson Disease (PD) page
4 registered trials, 4 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 4 Parkinson Disease (PD) trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Cristina Colon-Semenza sponsors the most Parkinson Disease (PD) trials on record, review their full trial history before evaluating a specific study. See Cristina Colon-Semenza'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 Parkinson Disease (PD) condition card totals 4 registered trials; most-linked intervention Robotic Apparel; top US site state California. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.