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.
Japan
This study combines symptom assessments, thinking tests, scans and laboratory measures to investigate Parkinson's and related conditions.
Learning by observing or collecting information
Age 18years-old and over · Ask the team who can join
Japan
Researchers are measuring how medicines that act on the body's automatic control system affect people with Parkinson's.
Learning by observing or collecting information
Ages 18years-old to 90years-old · Ask the team who can join
Japan
This study uses a driving simulator to investigate how thinking and attention relate to driving ability in Parkinson's.
Learning by observing or collecting information
Ages 20years-old to 90years-old · Ask the team who can join
Japan
Researchers are testing whether a brief session changes uneven stepping in Parkinson's.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Japan
Researchers are examining detailed magnetic resonance images in people with Parkinson's and mild changes in thinking.
Learning by observing or collecting information
Age 60years-old and over · Ask the team who can join
Japan
Researchers are studying how Parkinson's affects the nerves that help regulate heart rate.
Testing a treatment or activity
Ages 40years-old to 90years-old · Ask the team who can join
Japan
This study follows people with symptoms beyond movement problems to investigate whether tests can help identify Parkinson's earlier.
Testing a treatment or activity
Age 50years-old and over · Ask the team who can join
Japan
Researchers are comparing active and simulated stimulation alongside walking practice and measuring walking speed.
Testing a treatment or activity
Ages 40years-old to 80years-old · Ask the team who can join
Japan
Researchers are comparing five-week rehabilitation programmes for people with Parkinson's.
Testing a treatment or activity
Ages 50years-old to 85years-old · Ask the team who can join
Japan
This study compares inpatient and outpatient rehabilitation for forward bending in Parkinson's.
Testing a treatment or activity
Ages 40years-old to 90years-old · Ask the team who can join
Japan
Researchers are comparing a cycling wheelchair with a standard wheelchair in people with Parkinson's.
Testing a treatment or activity
Ages 60years-old to 85years-old · Ask the team who can join
Japan
This study uses magnetic resonance imaging to investigate how treatment changes brain activity at rest.
Testing a treatment or activity
Age 20years-old and over · Ask the team who can join
Japan
Researchers are comparing rehabilitation with and without tai chi for Parkinson's symptoms.
Testing a treatment or activity
Ages 40years-old to 85years-old · Ask the team who can join
Japan
Researchers are analysing proteins and genetic material in spinal fluid and urine to investigate neurological diseases.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Japan
This study combines different scans to investigate the brain's dopamine system and structure.
Learning by observing or collecting information
Ages 30years-old to 90years-old · Ask the team who can join
Japan
Researchers are comparing active and simulated stimulation to investigate changes in Parkinson's symptoms.
Testing a treatment or activity
Ages 50years-old to 85years-old · Ask the team who can join
Japan
Researchers are comparing injections into an abdominal muscle with salt-water injections to investigate posture in Parkinson's.
Testing a treatment or activity
Age 20years-old and over · Ask the team who can join
Japan
This study follows symptoms and convenience after changing from short-acting to extended-release pramipexole.
Testing a treatment or activity
Age 20years-old and over · Ask the team who can join
Japan
Researchers are comparing back-muscle and finger-movement exercises and measuring posture changes in Parkinson's.
Testing a treatment or activity
Age range not listed · Ask the team who can join
United States
Researchers are comparing eating patterns during a 36-week study to investigate changes in symptoms.
Testing a treatment or activity
Age range not listed · Ask the team who can join
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.