Recruiting Studies
Advanced SearchData: ClinicalTrials.gov · Source of record for eligibility and locations
Top Cities for Parkinsons Disease Clinical Trials
Parkinsons Disease clinical trials are recruiting across 174 cities. Here are the cities with the most active studies:
Parkinsons Disease Trial Phases
74 research organizations are sponsoring parkinsons disease trials.
About Parkinsons Disease
Parkinson's disease is a progressive nervous system disorder that affects movement, causing tremors, stiffness, and difficulty with balance. It results from the loss of dopamine-producing neurons in the brain. Treatment includes medications, deep brain stimulation, and emerging therapies targeting disease modification.
Clinical trials are advancing new treatments for parkinsons disease. Currently, 100 studies are recruiting a combined 1,604,662 participants across the United States. Research is being conducted by 74 organizations including Parkinson's Foundation, Michael J. Fox Foundation for Parkinson's Research, National Institutes of Health Clinical Center (CC) and 71 others.
2026 Parkinsons Disease Research Landscape
As of July 2026, the parkinsons disease clinical trial landscape includes 100 actively recruiting studies across 174 cities in the United States. These studies are collectively seeking 1,604,662 participants, with an average enrollment target of 16,047 per study.
The research spans multiple phases of development: 24 studies are in NA, 18 studies are in PHASE2, 10 studies are in PHASE3, 5 studies are in PHASE1, 2 studies are in PHASE4. The presence of Phase 3 trials indicates that some parkinsons disease treatments are in late-stage testing and may be approaching regulatory review.
Research is being led by 74 different organizations, including Parkinson's Foundation, Michael J. Fox Foundation for Parkinson's Research, National Institutes of Health Clinical Center (CC), AstraZeneca, Vanderbilt University Medical Center, and 69 others. The large number of sponsors reflects significant research interest and investment in parkinsons disease treatment advancement.
Geographically, parkinsons disease trials are most concentrated in Birmingham, Alabama (19 trials); Los Angeles, California (19 trials); Phoenix, Arizona (14 trials); Miami, Florida (13 trials); Tampa, Florida (11 trials) and 7 other cities.
Featured Parkinsons Disease Studies
Highlighted recruiting studies for parkinsons disease, selected by enrollment size and research scope.
Parkinson's Foundation Surveys
Parkinson's Foundation Surveys is an initiative seeking to periodically survey people with Parkinson's disease (PD), their care partners and medical professionals to better understand specific aspects of living with PD.
Parkinson Progression Marker Initiative Online (PPMI Online)
Parkinson Progression Marker Initiative Online (PPMI Online) is an observational study collecting participant reported information from people with and without Parkinson's disease (PD), for the goal of better understanding risk and predictive factors for PD. PPMI Online is part of the broader Parkinson Progression Marker Initiative aimed at identifying markers of disease progression for use in cl...
Parkinson's Foundation PD GENEration Genetic Registry
Development of a central repository for PD-related genomic data for future research.
Frequently Asked Questions About Parkinsons Disease Clinical Trials
Are there parkinsons disease clinical trials near me?
Yes, there are 100 parkinsons disease clinical trials currently recruiting across 174+ cities in the United States, including Birmingham, Alabama; Los Angeles, California; Phoenix, Arizona. Browse the studies above to find one at a location convenient for you.
How do I join a parkinsons disease clinical trial?
To join a parkinsons disease clinical trial: 1) Browse the available studies on this page, 2) Click on a study that interests you, 3) Check the study locations to find a site near you, 4) Review the eligibility criteria, and 5) Contact the study site or complete the eligibility form. The process is free and you can withdraw at any time.
Are parkinsons disease clinical trials free?
Yes, participation in parkinsons disease clinical trials is free. Study-related treatments, medical tests, and doctor visits are provided at no cost to participants. Many studies also offer compensation for your time and travel expenses.
What types of parkinsons disease treatments are being studied?
Current parkinsons disease clinical trials are testing a range of approaches across NA (24 studies), PHASE2 (18 studies), PHASE3 (10 studies), PHASE1 (5 studies), PHASE4 (2 studies). These include new drugs, combination therapies, medical devices, and other interventions sponsored by 74 research organizations.
Is it safe to participate in parkinsons disease clinical trials?
Clinical trials are carefully regulated by the FDA and institutional review boards (IRBs). All trials must follow strict safety protocols, and participants receive close medical monitoring throughout the study. You can withdraw from a trial at any time without penalty.
Data updated July 16, 2026 from ClinicalTrials.gov
About This Data
Data: ClinicalTrials.gov · Source of record for eligibility and locations
Clinical trial information on this page is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health (NIH) and National Library of Medicine (NLM). Study data is refreshed every hour to ensure accuracy.
Medical Disclaimer: The information provided on this page is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before making decisions about clinical trial participation or changes to your treatment plan.
Page reviewed by the HelloStudys Research Team · Last updated July 16, 2026 · Data from ClinicalTrials.gov