How to find recruiting PD clinical trials near you

1) Go to (see screenshot below) and enter search parameters to find studies of interest. 

2) View list of studies matching your criteria and apply additional filters.

​3) Click on a study's title for more info about that study, including its description, design, sponsor, eligiblity criteria, and contact info.

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

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 4 involves further study of therapies already FDA-approved.

Select Country (or leave blank to see all countries). After selecting Country, options for State (U.S. only), City, and Distance will appear. 

Other terms box - Helpful search terms include: Interventional, Phase 1, Phase 2, Phase 3, Phase 4, Observational. Can use combination of terms.

Click on 'Search" button to view list of trials matching your criteria (or "Advanced Search" option for more search criteria). 

Snapshot of

# PD Studies Recruiting 

as of May 24, 2019


INT Phase 14427
INT Phase 26530
INT Phase 32011
INT Phase 4177
INT No Phase17772


An OBSERVATIONAL STUDY is a type of clinical study in which participants are identified as belonging to study groups and are assessed for biomedical or health outcomes. Participants may receive diagnostic, therapeutic, or other types of interventions, but the investigator does not assign participants to  specific interventions/treatments.

​Assessment may be based on data collected from participants at a point in time or over a period of time.


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

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.

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

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

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

View Recruiting PD Trials via Interactive Maps

INT = Interventional, OBS = Observational

Total # Recruiting = 442 (303 INT* + 139 OBS)

*20 trials are combined Phase 1/2 or Phase 2/3

Click on buttons below for interactive world maps on

Then click on country/state to view individual trials.

NOTE:  In December 2017, released a new version of its website featuring enhanced search and usability features, including the ability to search for trials by city/distance from city.  To learn more about these features, visit Further Enhancements to Functionality. NLM Tech Bull. 2017 Nov-Dec and More Changes to Improve Usability. NLM Tech Bull. 2017 Sep-Oct.

recruiting PARKINSON'S DISEASE trials

Find Recruiting PD Trials in your Area