Analyzing the Parkinson's disease clinical trial pipeline to facilitate patient collaboration in research.

The Charter for Clinical Trials in Parkinson's, published by The Cure Parkinson's Trust & Parkinson's Movement, provides helpful guidelines for potential trial participants.

*21 trials worldwide (10 U.S.) are combined Phase 1/2 or Phase 2/3 

Studies with no phase specified may include evaluations of interventions such as exercise, physical therapy, speech therapy, dietary supplements and more.

Enter search parameters on to find studies you may be interested in.

Or click on buttons below for interactive world maps on Then click on country/state to view individual trials.

recruiting PARKINSON'S DISEASE trials

Find Recruiting PD Trials in your Area

An OBSERVATIONAL STUDY collects and analyzes data from participants in order to better understand a disease and to further the development of biomarkers and improved treatments.  For example, participants may be asked to complete questionnaires, provide blood or CSF samples, undergo scans, or use a wearable device. Data may be collected at a point in time or longitudinally.

Phase 3 evaluates therapy safety and efficacy with 100's or thousands of participants.

Information about currently recruiting interventional and observational Parkinson's disease studies taking place around the world is available on, the world's most comprehensive clinical trial registry.  Below you will find tips for using to help find recruiting trials you may qualify to participate in. (See overview.)  Information for each trial includes its description, design, eligibility criteria, sponsor, locations, contact info and more.  Further information about any trial can be obtained by contacting the trial coordinator via the contact info provided.

An INTERVENTIONAL STUDY (or Clinical Trial) is a clinical study in which participants are assigned an intervention such as a medication, device, or procedure, so that researchers can evaluate its effects on biomedical or health-related outcomes.  Participants may receive diagnostic, therapeutic, or other types of interventions.  Randomized, placebo-controlled clinical trials are the gold standard for assessing the safety and effectiveness of a therapy.    

Phase 1 evaluates therapy safety with small # participants ( <100).

Phase 4 involves further study of therapies already FDA-approved.

Phase 2 evaluates therapy safety and efficacy with up to several hundred participants.

# PD Studies Recruiting Healthy Volunteers

(, January 31, 2024)

Phase 1Phase 2Phase 3Phase N/AObservational

# Recruiting PD Studies 

as of January 31, 2024


World U.S.  
Phase 14331
Phase 26736
Phase 3123
Phase 4136
Phase N/A294103