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

How to find recruiting PD clinical trials near you

1) Go to (see screenshot below)

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

3) View list of studies matching your criteria.

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

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

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). 

INT = Interventional, OBS = Observational

Total # Recruiting = 410 (282 INT* + 128 OBS)

*17 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

Access Recruiting PD Trials in your Area

Snapshot of

# PD Studies Recruiting 

as of Nov. 16, 2018


INT Phase 14529
INT Phase 25933
INT Phase 3148
INT Phase 4167
INT No Phase16568

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).

This page provides access to information about currently recruiting interventional and observational Parkinson's disease studies taking place around the world.  It is intended to help patients and controls find trials of interest to them that they may qualify to participate in.  Unless otherwise noted, recruiting trial information is provided through (See overview.) Further information about any trial you may be interested in can be obtained by contacting the trial coordinator listed in the trial description.

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

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

View Recruiting PD Trials via Interactive Maps

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

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

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.