- Conditions
- Idiopathic Parkinson's Disease
- Interventions
- Istradefylline 20 mg or 40 mg
- Drug
- Lead sponsor
- Kyowa Kirin Co., Ltd.
- Industry
- Eligibility
- 30 Years and older
- Enrollment
- 239 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 23
- States / cities
- Phoenix, Arizona • Sun City, Arizona • Tucson, Arizona + 20 more
Condition Directory
Parkinson's Disease clinical trials
Directory of U.S. ClinicalTrials.gov public records for Parkinson's Disease. Browse Parkinson's Disease recruiting trials, filter by phase, sponsor, location, or intervention, and open the official ClinicalTrials.gov study record for each result.
By Clinical Trials Finder Guidance last reviewed June 10, 2026 Data synced October 6, 2026 Report an issue
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official matching trials
256
Shown on this page
12
Current sort
Recently updated
Condition scope
Parkinson's Disease
Additional filters apply within this condition.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
How Parkinson's Disease studies are organized in the registry
Records generally use the registry spelling “Parkinson disease.” The portfolio mixes drug studies with a high share of device, exercise, and rehabilitation research, so the study-type filter is unusually useful here. Disease-stage language (“early,” “advanced,” “levodopa-treated”) commonly appears in titles.
Terms that often appear in related listings
These describe how studies tend to be titled and grouped on ClinicalTrials.gov — they are search vocabulary, not medical guidance.
Showing 73–84 of 256 matching trials for Parkinson's Disease.
Live ClinicalTrials.gov results.
Live official records
Open in full search- Conditions
- Parkinson's Disease
- Interventions
- Istradefylline (KW-6002)
- Drug
- Lead sponsor
- Kyowa Kirin, Inc.
- Industry
- Eligibility
- 30 Years and older
- Enrollment
- 230 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2006
- U.S. locations
- 1
- States / cities
- Princeton, New Jersey
- Conditions
- Parkinson's Disease
- Interventions
- Istradefylline ( KW-6002)
- Drug
- Lead sponsor
- Kyowa Kirin, Inc.
- Industry
- Eligibility
- 30 Years and older
- Enrollment
- 1,100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2007
- U.S. locations
- 1
- States / cities
- Princeton, New Jersey
- Conditions
- Parkinson Disease
- Interventions
- Not listed
- Lead sponsor
- BlueRock Therapeutics
- Industry
- Eligibility
- 50 Years to 78 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2027
- U.S. locations
- 2
- States / cities
- Orange, California • New York, New York
- Conditions
- Parkinson Disease
- Interventions
- Microbiome specimens in stool
- Diagnostic Test
- Lead sponsor
- Corewell Health West
- Other
- Eligibility
- Not listed
- Enrollment
- 23 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2021
- U.S. locations
- 1
- States / cities
- Grand Rapids, Michigan
- Conditions
- Parkinson Disease
- Interventions
- Deep Brain Stimulation
- Device
- Lead sponsor
- Northwell Health
- Other
- Eligibility
- 21 Years to 80 Years
- Enrollment
- 24 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Great Neck, New York
- Conditions
- Parkinson Disease
- Interventions
- Liraglutide, Placebo
- Drug
- Lead sponsor
- Cedars-Sinai Medical Center
- Other
- Eligibility
- 25 Years to 85 Years
- Enrollment
- 63 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2022
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Parkinson Disease
- Interventions
- Mesdopetam, Placebo
- Drug
- Lead sponsor
- Integrative Research Laboratories AB
- Industry
- Eligibility
- 30 Years to 79 Years
- Enrollment
- 155 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2022
- U.S. locations
- 14
- States / cities
- Scottsdale, Arizona • Long Beach, California • Palo Alto, California + 9 more
- Conditions
- Parkinson's Disease, Small Intestinal Bacterial Overgrowth
- Interventions
- Rifaximin, Placebo
- Drug
- Lead sponsor
- University of Cincinnati
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 1
- States / cities
- Cincinnati, Ohio
- Conditions
- Parkinson Disease
- Interventions
- Dynamic high-cadence cycling
- Behavioral
- Lead sponsor
- Kent State University
- Other
- Eligibility
- 50 Years to 79 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2024
- U.S. locations
- 1
- States / cities
- Kent, Ohio
- Conditions
- Parkinson's Disease
- Interventions
- Detailed motor testing, including FoG, in PD subjects
- Other
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- 50 Years and older
- Enrollment
- 53 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2021
- U.S. locations
- 1
- States / cities
- Ann Arbor, Michigan
- Conditions
- Parkinson's Disease
- Interventions
- Not listed
- Lead sponsor
- Neurocrine Biosciences
- Industry
- Eligibility
- 40 Years and older
- Enrollment
- 14 participants
- Timeline
- 2018 – 2023
- U.S. locations
- 3
- States / cities
- San Francisco, California • Atlanta, Georgia • Columbus, Ohio
About this Parkinson's Disease clinical trials directory page
- What this page lists
- U.S. ClinicalTrials.gov public records that list Parkinson's Disease as a study condition, including recruiting, not yet recruiting, and active not recruiting trials across phase 1, phase 2, and phase 3.
- How to narrow results
- Use the filters above to scope by intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, age, or NCT ID within Parkinson's Disease.
- Where the data comes from
- Records are sourced from the official ClinicalTrials.gov public API. Each result links back to the official study page, which is the source of truth for eligibility, enrollment, and contact information.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, ranking of trials by quality, or AI-generated medical summaries.
Related: all condition pages, browse by drug or therapy, browse by U.S. city, browse by sponsor, or open the full search for Parkinson's Disease.