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.
United States
Researchers collect information about symptoms, thinking, treatments and family history, alongside samples, to support studies of movement conditions.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
United Kingdom
Researchers document the experiences of people with Parkinson’s attending a complementary medicine clinic. This observational study does not establish whether its treatments work.
Learning by observing or collecting information
Age 18 years and over · Ask the team who can join
United Kingdom
Researchers use a shared trial programme to evaluate potential treatments for Parkinson’s and decide which should be studied further.
Testing a treatment or activity
Age 30 years and over · Does not accept healthy volunteers
France
Researchers use powerful MRI scans to study brain structure, connections and metabolism in ageing and conditions affecting the brain.
Learning by observing or collecting information
Ages 18 years to 90 years · Also accepts healthy volunteers
Monaco
Researchers record eye movements in people with mild to moderate Parkinson’s to learn how eye movement patterns relate to the condition.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
Qatar
Researchers test online physical activity coaching for people with Parkinson’s in Qatar.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
Austria
Researchers study people who have functional movement symptoms alongside another movement condition, to better understand their symptoms and care needs.
Learning by observing or collecting information
Ages 18 years to 18 years · Ask the team who can join
Turkey
Researchers test training that involves imagining movements to see how it affects people with Parkinson’s.
Testing a treatment or activity
Ages 40 years to 75 years · Does not accept healthy volunteers
Germany
Researchers investigate links between sugar use in the body and Parkinson’s symptoms.
Learning by observing or collecting information
Ages 50 years to 80 years · Does not accept healthy volunteers
Germany
Researchers screen people at increased risk for changes involving alpha-synuclein, a protein linked to Parkinson’s, before typical movement symptoms develop.
Learning by observing or collecting information
Ages 50 years to 99 years · Also accepts healthy volunteers
Turkey
Researchers assess a Turkish version of a questionnaire about dyskinesia, the extra movements that can occur with Parkinson’s treatment.
Learning by observing or collecting information
Age range not listed · Does not accept healthy volunteers
United States
Researchers use detailed recordings from the brain to study how its cells support planning and other thinking skills.
Testing a treatment or activity
Ages 45 years to 85 years · Does not accept healthy volunteers
Taiwan
Researchers test low-intensity focused sound waves aimed at areas deep in the brain in people with persistent hand tremor.
Testing a treatment or activity
Ages 18 years to 80 years · Does not accept healthy volunteers
Japan
Researchers test the safety and tolerability of febuxostat and inosine together as a possible approach for Parkinson’s.
Testing a treatment or activity
Ages 18 years to 80 years · Does not accept healthy volunteers
Egypt
Researchers investigate whether silymarin, a substance from milk thistle, affects Parkinson’s symptoms. Any benefit remains to be established.
Testing a treatment or activity
Ages 45 years to 65 years · Does not accept healthy volunteers
United States
Researchers compare pimavanserin and quetiapine in everyday care for people with Lewy body dementia who experience hallucinations or related symptoms.
Testing a treatment or activity
Age range not listed · Does not accept healthy volunteers
China
Researchers investigate PDR001, an experimental treatment intended to help remove a protein associated with Parkinson’s from the brain.
Testing a treatment or activity
Ages 40 years to 65 years · Does not accept healthy volunteers
China
Researchers study the safety and effects of XJN010 nasal spray during periods when usual Parkinson’s medicines no longer control symptoms well.
Testing a treatment or activity
Ages 30 years to 85 years · Does not accept healthy volunteers
China
Researchers test whether electrical stimulation applied through the scalp affects swallowing difficulties in people with Parkinson’s.
Testing a treatment or activity
Ages 18 years to 100 years · Does not accept healthy volunteers
France
Researchers test the feasibility of examinations and study procedures before using them in larger research projects.
Testing a treatment or activity
Age 18 years and over · Also accepts 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.