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 study an approach that helps people use thinking strategies in different situations to address mild thinking difficulties in Parkinson’s.
Testing a treatment or activity
Age 50 years and over · Does not accept healthy volunteers
United States
Researchers study a stepping therapy and how people with Parkinson’s best learn new movements set to music.
Testing a treatment or activity
Ages 18 years to 79 years · Also accepts healthy volunteers
United States
Researchers examine whether virtual environments change how hard people with Parkinson’s exercise and how much they enjoy cycling.
Testing a treatment or activity
Ages 45 years to 75 years · Does not accept healthy volunteers
Canada
Researchers aim ultrasound stimulation at a brain area involved in movement to study episodes when walking gets stuck in Parkinson’s.
Testing a treatment or activity
Ages 18 years to 90 years · Also accepts healthy volunteers
Belgium
Researchers follow adults with advanced Parkinson’s receiving foslevodopa and foscarbidopa under the skin to study changes in symptoms.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
United States
Researchers test EC5026 in adults with Parkinson’s, studying safety and whether it acts on the biological processes it is intended to target.
Testing a treatment or activity
Ages 50 years to 80 years · Does not accept healthy volunteers
France
Researchers study the role of the noradrenaline signalling system in healthy ageing and Parkinson’s.
Testing a treatment or activity
Ages 20 years to 80 years · Also accepts healthy volunteers
United States
Researchers study stimulation of the vagus nerve without an operation as an approach to walking difficulties in Parkinson’s.
Testing a treatment or activity
Ages 50 years to 88 years · Does not accept healthy volunteers
Netherlands
Researchers are studying this experimental medicine in healthy volunteers and people with Parkinson's or motor neurone disease.
Testing a treatment or activity
Age range not listed · Ask the team who can join
China, Hong Kong
Researchers are studying whether artificial intelligence can support a standard clinical assessment of Parkinson’s symptoms.
Learning by observing or collecting information
Ages 18 years to 95 years · Does not accept healthy volunteers
France
Researchers study brain systems involved in reward in people with Parkinson’s who also have a dream-sleep movement disorder.
Testing a treatment or activity
Ages 45 years to 80 years · Does not accept healthy volunteers
United States
Researchers study where to aim magnetic brain stimulation to address apathy, or reduced motivation, in people with Parkinson’s.
Testing a treatment or activity
Ages 55 years to 80 years · Does not accept healthy volunteers
Turkey
Researchers test an app that combines timed sounds and vibrations to guide walking rhythm in people with Parkinson’s.
Testing a treatment or activity
Ages 60 years to 80 years · Does not accept healthy volunteers
Turkey
Researchers compare ways to deliver arm exercises combined with a second task, including live remote sessions, independent sessions and clinic training.
Testing a treatment or activity
Age 40 years and over · Does not accept healthy volunteers
Switzerland
Researchers test an implanted electrical stimulation approach near the spinal cord, checking safety and effects on blood-pressure and circulation control in Parkinson’s-related conditions.
Testing a treatment or activity
Ages 18 years to 90 years · Does not accept healthy volunteers
United States
Researchers study stimulation settings aimed at improving how the eyes align and refocus, and how vision guides movement in Parkinson’s.
Learning by observing or collecting information
Age range not listed · Does not accept healthy volunteers
France
Researchers study how a deep brain area helps control movement and how changes there relate to difficulty moving in Parkinson’s.
Testing a treatment or activity
Ages 18 years to 70 years · Also accepts healthy volunteers
Turkey
Researchers study L-theanine and a Mediterranean-style diet in relation to dream-sleep movements, digestive function and inflammation in Parkinson’s.
Testing a treatment or activity
Ages 50 years to 80 years · Does not accept healthy volunteers
United States
Researchers study whether a patterned form of implanted brain stimulation is safe and manageable when people use it at home.
Testing a treatment or activity
Ages 18 years to 80 years · Does not accept healthy volunteers
Turkey
Researchers study a breathing exercise that involves blowing against resistance, looking at breathing muscles, strength and balance in Parkinson’s.
Learning by observing or collecting information
Ages 18 years to 75 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.