A Study Evaluating the Efficacy of Budesonide, Glycopyrronium and Formoterol Fumarate Metered Dosed Inhaler on Cardiopulmonary Outcomes in Chronic Obstructive Pulmonary Disease
This study will evaluate the effect of triple ICS/LAMA/LABA therapy with BGF MDI 320/14.4/9.6 μg on cardiopulmonary outcomes relative to LAMA/LABA therapy with GFF MDI 14.4/9.6 μg in a population with...
A 52-week, Placebo- and Active- Controlled (Roflumilast, Daliresp® 500µg) Study to Evaluate the Efficacy and Safety of Two Doses of CHF6001 DPI (Tanimilast) as add-on to Maintenance Triple Therapy in Subjects With COPD and Chronic Bronchitis. (PILLAR)
The purpose of this study is to evaluate the efficacy and the safety of two doses of CHF6001 (Tanimilast) as add-on to maintenance triple therapy in the target patient population....
A Study to Evaluate the Long-Term Safety of Astegolimab in Participants With Chronic Obstructive Pulmonary Disease (COPD)
The purpose of this study is to assess the long-term safety and to explore the efficacy of astegolimab in participants with chronic obstructive pulmonary disease (COPD) who have completed the 52-week ...
Long-term Efficacy and Safety of Tozorakimab in Participants With Chronic Obstructive Pulmonary Disease With a History of Exacerbations (PROSPERO).
Subjects who completed either OBERON or TITANIA will be offered the opportunity to consent for this Multicentre, Double-blind, Randomised, Placebo controlled, Parallel Group, Phase 3, extension study ...
A Study to Evaluate Astegolimab in Participants With Chronic Obstructive Pulmonary Disease
This study will evaluate the efficacy and safety of astegolimab compared with placebo in participants with chronic obstructive pulmonary disease (COPD) who are former or current smokers and have a his...
A Study to Investigate the Effect of AZD6793 in Participants With Moderate to Very Severe Chronic Obstructive Pulmonary Disease
This Phase IIb dose-ranging study will evaluate the efficacy and safety of 3 different doses of AZD6793 compared with placebo tablets in participants with moderate to very severe chronic obstructive p...
A Study to Investigate the Efficacy and Safety of Tezepelumab in Adult Participants With Moderate to Very Severe COPD
A Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel Group, Phase 3 Study to Evaluate the Efficacy and Safety of Tezepelumab in Adults with Moderate to Very Severe Chronic Obstructive...
A Study to Investigate the Efficacy and Safety of Tezepelumab in Adult Participants With Moderate to Very Severe COPD (D5241C00007)
A Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel Group, Phase 3 Study to Evaluate the Efficacy and Safety of Tezepelumab in Adults with Moderate to Very Severe Chronic Obstructive...
Multi-Center Clean Air Randomized Controlled Trial in COPD
This is a multi-center randomized, sham-controlled clinical trial to determine the effectiveness of an air cleaner intervention aimed at improving indoor air quality on reducing COPD exacerbation risk...
A Study to Assess the Efficacy and Safety of Verekitug in Participants With COPD
The purpose of this study is to assess the efficacy and safety of verekitug (UPB-101) in participants with moderate-to-severe Chronic Obstructive Pulmonary Disease (COPD), an inflammatory lung disease...
A Study to Determine if BHV-8000 is Effective, Safe and Tolerable as a Treatment for Adults Living With Early Parkinson's Disease
A study to determine if BHV-8000 is efficacious, safe and tolerable in adults diagnosed with early Parkinson's disease....
A Phase IIb Ensifentrine-glycopyrrolate Fixed-dose Combination Dose Ranging Study in Subjects With COPD
This study will assess the safety and efficacy of fixed dose combinations of ensifentrine with two different glycopyrrolate dose levels compared to placebo and to the individual components of the fixe...
Pimavanserin vs. Quetiapine for Treatment of Parkinson's Psychosis
Patients with Parkinson's disease (PD) sometimes experience symptoms affecting their movement, such as slowness, tremor, stiffness, and balance or walking problems. Many patients also have other sympt...
To Evaluate the Efficacy of CVN424 in Parkinson's Disease Participants With Motor Complications
This is a randomized, double-blind, placebo-controlled, multicenter study in participants with Parkinson's disease (PD) with motor fluctuations. Participants will be randomized to receive once-daily o...
A Study of CREXONT (Carbidopa and Levodopa) Extended-Release Capsules in Participants With Parkinson's Disease
The primary purpose of this study is to evaluate efficacy and safety of CREXONT under real world conditions in participants with Parkinson disease (PD)....
A Study to Evaluate the Effect of Budesonide, Glycopyrronium, Formoterol Fumarate (BGF) Metered Dose Inhaler (MDI), Budesonide and Formoterol Fumarate (BFF) MDI and Placebo MDI on Exercise Parameters in Participants With Chronic Obstructive Pulmonary Disease (COPD).
This study will investigate the effect of Budesonide, Glycopyrronium, and Formoterol Fumarate (BGF) metered dose inhaler (MDI) compared with Placebo MDI, and Budesonide and Formoterol Fumarate (BFF) M...
A Study to Evaluate Solrikitug in Participants With COPD (ZION)
A Randomized, Double-blind, Placebo-controlled, Multiple Dose-Ranging Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Solrikitug in Participants with Chronic Obstru...
Rademikibart Add-on Treatment of an Acute COPD Exacerbation (Seabreeze STAT COPD)
This is a Phase 2, multicenter study in adult participants with an acute COPD exacerbation and type 2 inflammation...
A Phase 2 Study of NEU-411 in Companion Diagnostic-Positive Participants With Early Parkinson's Disease
The goal of this Phase 2 clinical trial is to investigate the efficacy and safety of NEU-411 in men and women aged 40-80 years with early Parkinson's Disease (PD) who have predicted elevations in the ...
Lenrispodun as Adjunctive Therapy in the Treatment of Patients With Motor Fluctuations Due to Parkinson's Disease
This is a multicenter, randomized, double-blind, placebo-controlled, parallel-group, fixed-dose study in patients with a diagnosis of Parkinson's Disease consistent with the UK Parkinson's Disease Soc...
Breathe Easier With Tadalafil Therapy for Dyspnea in COPD-PH
The investigators will study whether the drug tadalafil improves shortness of breath in 126 Veterans with Chronic Obstructive Pulmonary Disease (COPD) and high blood pressure in the lungs. The investi...
Rehabilitation of Airway Protection in Parkinson's Disease
Airway protective disorders are a prevalent and progressive consequence of Parkinson's Disease (PD), and often result in aspiration pneumonia which is the leading cause of death in PD. Despite this, a...
Frespaciguat (MK-5475) INSIGNIA-PH-COPD: A Study of the Efficacy and Safety of Frespaciguat (an Inhaled sGC Stimulator) in Adults With PH-COPD
Researchers are looking for ways to treat pulmonary hypertension (PH) caused by chronic obstructive pulmonary disease (COPD). The goal of the study is to learn if people who take frespaciguat can walk...
A Study to Investigate the Efficacy and Safety of Bemdaneprocel in Adults Who Have Parkinson's Disease
Study BRT-DA01-301 is a Phase 3 multicenter, randomized, sham surgery-controlled, double-blind study to assess efficacy and safety of bemdaneprocel in approximately 102 adults with Parkinson's Disease...
Comparing Antipsychotic Medications in LBD Over Time
The primary objective of this study is to determine whether treatment with pimavanserin or quetiapine is associated with a greater improvement in psychosis when used in a routine clinical setting to t...
A Study of AAV2-GDNF in Adults With Moderate Parkinson's Disease (REGENERATE-PD)
The objective of this randomized, surgically controlled, double-blinded, Phase 2 study is to evaluate the safety and efficacy of AAV2-GDNF delivered to the putamen in subjects with moderate Parkinson'...
Cortical Electrophysiology of Response Inhibition in Parkinson's Disease
Patients with Parkinson's Disease will be studied before, during, and after a deep brain stimulation implantation procedure to see if the stimulation location and the size of the electrical field prod...
Vestibulopathy as a Cause of Imbalance in Parkinson
Balance problems and falls are common in people with Parkinson's disease but respond poorly to dopamine stimulating medications suggesting other causes. The main goal of this study is to assess whethe...
A Phase 2a Multicenter Clinical Trial of TB006 in Participants With Parkinson's Disease
The primary objectives of this study are to assess the efficacy of TB006 in improving motor function and to assess the safety of TB006 in participants with Parkinson's Disease (PD)....
A Study of NE3107 in Early Parkinson's
The goal of this clinical trial is to learn if bezisterim can treat movement symptoms of Parkinson's disease in patients that are 45 to 80 years old, in generally good physical and mental health, and ...
rTMS to Improve Cognition in Parkinson's
The purpose of this study is to examine safety, feasibility, and the behavioral and brain effects of a non-invasive treatment, repetitive transcranial magnetic stimulation (rTMS), for Veterans with Pa...
Intranasal Insulin and Glutathione as an Add-On Therapy in Parkinson's Disease
This study will be evaluating the safety and efficacy of insulin and glutathione in subjects with Parkinson's Disease compared to placebo....
Safety and Pharmacodynamic Effects of BIIB122 in Participants With LRRK2-Associated Parkinson's Disease (LRRK2-PD)
This Phase 2a, multicenter, randomized, 12-week double-blind, placebo-controlled, parallel-group study, followed by an OLE, is designed to evaluate the safety, tolerability, and pharmacodynamic effect...
Effect of Ensifentrine on Sputum Markers of Inflammation in COPD
This is a randomized, double-blind, placebo-controlled, two-period cross-over study of nebulized ensifentrine (3 mg) or placebo administered BID for two 8-week Treatment Periods. All participants with...
Prevalence of Humoral Dysfunction in Pts With Frequent Exacerbations of COPD, and the Effect of SCIgR for Prevention
To examine the prevalence of humoral immunodeficiency in patients with Chronic Obstructive Pulmonary disease (COPD) by evaluating both immunoglobulin levels and vaccine responses. Patients with COPD a...
A Phase 1b Study of the NLRP3 Inhibitor VENT-02 in Patients With Mild to Moderate Parkinson's Disease
This trial is a randomized, double-blind, placebo-controlled Phase 1b study evaluating the safety/tolerability, PK, and pharmacodynamics of VENT 02, administered orally at 1 dose level twice daily (BI...
Phase 1/2a Clinical Trial of PR001 (LY3884961) in Patients With Parkinson's Disease With at Least One GBA1 Mutation (PROPEL)
Study J3Z-MC-OJAA is a Phase 1/2a, multicenter, open-label, ascending dose, first in-human study that will evaluate the safety of intracisternal LY3884961 administration in patients with moderate to s...
Top Cities for Parkinsons Disease Clinical Trials
Parkinsons Disease clinical trials are recruiting across 139 cities. Here are the cities with the most active studies:
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, 37 studies are recruiting a combined 22,663 participants across the United States. Research is being conducted by 27 organizations including AstraZeneca, Chiesi Farmaceutici S.p.A., Hoffmann-La Roche and 24 others.
2026 Parkinsons Disease Research Landscape
As of March 2026, the parkinsons disease clinical trial landscape includes 37 actively recruiting studies across 139 cities in the United States. These studies are collectively seeking 22,663 participants, with an average enrollment target of 613 per study.
Research is being led by 27 different organizations, including AstraZeneca, Chiesi Farmaceutici S.p.A., Hoffmann-La Roche, JHSPH Center for Clinical Trials, Upstream Bio Inc., and 22 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 Phoenix, Arizona (12 trials); Los Angeles, California (11 trials); Birmingham, Alabama (11 trials); Boca Raton, Florida (11 trials); Miami, Florida (7 trials) and 7 other cities.
Featured Parkinsons Disease Studies
Highlighted recruiting studies for parkinsons disease, selected by enrollment size and research scope.
A Study Evaluating the Efficacy of Budesonide, Glycopyrronium and Formoterol Fumarate Metered Dosed Inhaler on Cardiopulmonary Outcomes in Chronic Obstructive Pulmonary Disease
This study will evaluate the effect of triple ICS/LAMA/LABA therapy with BGF MDI 320/14.4/9.6 μg on cardiopulmonary outcomes relative to LAMA/LABA therapy with GFF MDI 14.4/9.6 μg in a population with COPD and elevated cardiopulmonary risk.
A 52-week, Placebo- and Active- Controlled (Roflumilast, Daliresp® 500µg) Study to Evaluate the Efficacy and Safety of Two Doses of CHF6001 DPI (Tanimilast) as add-on to Maintenance Triple Therapy in Subjects With COPD and Chronic Bronchitis. (PILLAR)
The purpose of this study is to evaluate the efficacy and the safety of two doses of CHF6001 (Tanimilast) as add-on to maintenance triple therapy in the target patient population.
A Study to Evaluate the Long-Term Safety of Astegolimab in Participants With Chronic Obstructive Pulmonary Disease (COPD)
The purpose of this study is to assess the long-term safety and to explore the efficacy of astegolimab in participants with chronic obstructive pulmonary disease (COPD) who have completed the 52-week placebo-controlled treatment period in parent studies GB43311 or GB44332.
Frequently Asked Questions About Parkinsons Disease Clinical Trials
Are there parkinsons disease clinical trials near me?
Yes, there are 37 parkinsons disease clinical trials currently recruiting across 139+ cities in the United States, including Phoenix, Arizona; Los Angeles, California; Birmingham, Alabama. 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. These include new drugs, combination therapies, medical devices, and other interventions sponsored by 27 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 March 2, 2026 from ClinicalTrials.gov
About This Data
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 March 2, 2026 · Data from ClinicalTrials.gov