TAKE PART IN RESEARCH
Research explained in everyday language. Explore what teams around the world are trying to learn, who can take part and how to get in touch.
See worldwide coverage and update dates ↓Studies with early results appear under “Results reported” even if recruitment continues.
Registry records retrieved 2026-10-11 (UTC). Individual records may have older updates. Recruitment and eligibility must be confirmed with the study team.
A location is a starting point. Ask the team whether that site is accepting people and whether you can take part from where you live.
Introductions are AI-written from the registry in everyday language and have not been independently checked by a clinician. Open any study for its full name, original description and participation rules.
Studies name Parkinson’s or a related condition. Some include other conditions or healthy volunteers. Country filters use sites with matching or unreported status. A country recorded by WHO does not confirm an open local site.
United States
Researchers are comparing two devices that record brain activity during an operation to fit a brain stimulator.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
United Kingdom
Participants attend a clinic visit and may wear sensors at home. Researchers study patterns in shaking and arm movement recorded by the sensors.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Turkey
This study compares exercises for the balance system with practice doing two tasks at once in people with Parkinson’s.
Testing a treatment or activity
Ages 40 years to 75 years · Does not accept healthy volunteers
United States
Researchers are studying how an implanted brain stimulator affects brain networks involved in thinking in people with Parkinson’s.
Learning by observing or collecting information
Age 18 years and over · Also accepts healthy volunteers
United States
This study compares ways of delivering treatment for airway protection, including in-person care and care provided from a distance.
Testing a treatment or activity
Ages 50 years to 90 years · Does not accept healthy volunteers
United States
This study provides and studies treatment using an implanted device that sends electrical signals to brain areas involved in movement.
Testing a treatment or activity
Ages 18 years to 100 years · Does not accept healthy volunteers
United States
Researchers are studying surgery to implant a device that stimulates movement-related brain areas in people whose symptoms need further treatment.
Testing a treatment or activity
Ages 18 years to 99 years · Does not accept healthy volunteers
Belgium
Researchers are testing the Ronnie Gardiner Method in people with early to middle-stage Parkinson’s, looking at thinking, speech, balance, movement and mood.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
United States
This study examines whether a supplement called tributyrin is safe and manageable for people with progressive supranuclear palsy, a condition distinct from Parkinson’s.
Testing a treatment or activity
Age 45 years and over · Does not accept healthy volunteers
France
Researchers compare taste and brain responses in people with early Parkinson’s, people with Lewy body disease, and volunteers without these conditions.
Testing a treatment or activity
Age 18 years and over · Also accepts healthy volunteers
Belgium, France, Germany, Italy + 2 more
Researchers review existing patient records to understand the results of implanted brain stimulation in everyday clinical care.
Learning by observing or collecting information
Age range not listed · Does not accept healthy volunteers
Hong Kong
Researchers are testing whether imagining movements and learning to guide one’s own actions can improve daily activities in Parkinson’s.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
Poland
This study examines how physical activity relates to the course of Parkinson’s in people who already have an implanted brain stimulator.
Testing a treatment or activity
Ages 50 years to 70 years · Does not accept healthy volunteers
United States
Researchers compare two doses of the study medicine AP-472 with a look-alike inactive treatment in people whose movement symptoms fluctuate while taking levodopa.
Testing a treatment or activity
Ages 30 years to 80 years · Does not accept healthy volunteers
Australia, Austria, Brazil, Canada + 13 more
Researchers are checking the effects and safety of the study medicine prasinezumab, given through a vein, compared with an inactive treatment.
Testing a treatment or activity
Ages 50 years to 85 years · Does not accept healthy volunteers
United States
Researchers use wearable sensors and recordings from implanted brain electrodes to better understand balance problems in veterans with Parkinson’s.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Turkey
Researchers are studying links between spinal movement, stiffness, fear of moving and jaw problems in people with Parkinson’s.
Learning by observing or collecting information
Ages 35 years to 75 years · Also accepts healthy volunteers
Austria
Researchers are learning how people experience periods when their Parkinson’s medicine wears off, and how they use the prescribed medicine Inbrija in everyday life.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Germany
Researchers are following people receiving foslevodopa and foscarbidopa in routine care to assess how the treatment works as Parkinson’s becomes more advanced.
Learning by observing or collecting information
Ages 18 years to 67 years · Does not accept healthy volunteers
Israel, Italy, Poland, Spain + 2 more
This study tests NEU-411 in early Parkinson’s. A genetic test identifies people predicted to have increased activity in the biological pathway the medicine targets.
Testing a treatment or activity
Ages 40 years to 80 years · Does not accept healthy volunteers
WORLDWIDE COVERAGE
Studies are imported from ClinicalTrials.gov, WHO’s international collection and the European CTIS registry. WHO brings together national and regional registries, including records from Asia, Africa and Latin America. Recruiting and upcoming listings have English introductions; older records awaiting an introduction show their registry title.
We aim for broad worldwide coverage, but no registry includes every study. Unregistered studies, reporting delays and missing translations can leave gaps. A missing paper does not mean that no results exist.
Import available
Last complete check: 2026-10-11
4689 related source records before matching duplicates
Update needs attention; retaining the last complete import
Last complete check: 2026-10-11
4384 related source records before matching duplicates
Import available
Last complete check: 2026-10-11
73 related source records before matching duplicates
These dates show when WHO processed a registry’s data, not when every study was last updated. WHO’s “not recruiting” label does not distinguish planned, completed and follow-up studies.
Source attribution: WHO ICTRP ↗. The source records and processing dates remain available on each study page. English registration fields are preferred; original descriptions may include local-language material. Registry imports and paper matching run daily. New or changed descriptions enter an editorial queue.