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 2026-10-13 (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.
Turkey
Researchers compare abdominal breathing-muscle thickness, breathing-out strength and disease severity in people with Parkinson’s.
Learning by observing or collecting information
Ages 18 years to 75 years · Also accepts healthy volunteers
China
Researchers assess the safety, tolerability and possible effects of XS411 in people with Parkinson’s that begins early in life.
Testing a treatment or activity
Ages 18 years to 70 years · Does not accept healthy volunteers
United States
Researchers study whether a new imaging substance can detect accumulated alpha-synuclein protein in Parkinson’s and related conditions.
Testing a treatment or activity
Ages 50 years to 80 years · Also accepts healthy volunteers
Germany
Researchers study biological factors and brain responses involved in swallowing difficulties in people with Parkinson’s.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Italy
Researchers investigate how movement and exercise relate to brain health and thinking in Parkinson’s.
Testing a treatment or activity
Ages 30 years to 80 years · Does not accept healthy volunteers
Poland
Researchers observe whether use of medicines that reduce immune activity is associated with the course of Parkinson’s.
Learning by observing or collecting information
Age range not listed · Does not accept healthy volunteers
France
Researchers test a communication tool intended to help people with Parkinson’s and their doctors discuss care more fully.
Testing a treatment or activity
Ages 18 years to 90 years · Does not accept healthy volunteers
Italy
Researchers study whether responses to magnetic stimulation could help identify or predict thinking problems in Parkinson’s.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
Canada
Researchers study whether stimulation applied through the head alongside training affects movement abilities.
Testing a treatment or activity
Age range not listed · Does not accept healthy volunteers
United States
Researchers study whether people with Parkinson’s can safely and practically use the Cionic Neural Sleeve stimulation system.
Testing a treatment or activity
Ages 22 years to 75 years · Does not accept healthy volunteers
Switzerland
Researchers test whether brain stimulation adjusted to different movement states is safe and affects walking in Parkinson’s.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
United States
Researchers study personalised touch signals timed to steps, examining walking and brain activity in Parkinson’s.
Testing a treatment or activity
Ages 45 years to 85 years · Does not accept healthy volunteers
United States
Researchers study action regulation and behaviour in people with Parkinson’s.
Testing a treatment or activity
Ages 18 years to 80 years · Also accepts healthy volunteers
Egypt
Researchers investigate the use of vinpocetine in people with Parkinson’s.
Testing a treatment or activity
Ages 50 years to 70 years · Does not accept healthy volunteers
Turkey
Researchers study procedures to revise brain stimulation treatment in people with Parkinson’s.
Testing a treatment or activity
Ages 40 years to 85 years · Does not accept healthy volunteers
South Korea
Researchers study light-based treatment applied to the body, checking safety and changes in movement and thinking in Parkinson’s.
Testing a treatment or activity
Age 40 years and over · Does not accept healthy volunteers
France
Researchers compare hearing difficulties in people with early neurological conditions and a comparison group.
Testing a treatment or activity
Ages 50 years to 85 years · Also accepts healthy volunteers
China
Researchers investigate whether changing deep-sleep activity with magnetic stimulation affects the course of Parkinson’s.
Testing a treatment or activity
Ages 50 years to 80 years · Does not accept healthy volunteers
United Kingdom, United States
Researchers use repeated specialised scans to study changes in people with signs that may precede a Parkinson’s diagnosis.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
Egypt
Researchers investigate whether adding the anti-inflammatory medicine celecoxib to usual care affects Parkinson’s.
Testing a treatment or activity
Ages 50 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: 2026-10-13
4689 related source records before matching duplicates
Import available
Last complete check: 2026-10-13
4384 related source records before matching duplicates
Import available
Last complete check: 2026-10-13
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.