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.
Russia
Researchers study how existing health conditions relate to complications after abdominal surgery.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Italy
Researchers investigate movement sensors worn on the arms and legs as tools for assessment, diagnosis and monitoring treatment.
Testing a treatment or activity
Ages 50 years to 80 years · Also accepts healthy volunteers
United Kingdom
Researchers study brain connections that may help explain why some people become more impulsive after deep brain stimulation for Parkinson’s.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
Italy
Researchers investigate remotely delivered rehabilitation for people with Parkinson’s.
Testing a treatment or activity
Ages 30 years to 80 years · Does not accept healthy volunteers
United States
Researchers compare symptoms, thinking tests, sleep recordings and brain scans in Parkinson’s, Alzheimer’s disease and Lewy body dementia.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Turkey
Researchers study the experiences and responsibilities of primary carers of people with Parkinson’s.
Learning by observing or collecting information
Ages 40 years to 80 years · Ask the team who can join
Germany, Netherlands
Researchers investigate feedback from MRI brain scans as a way for people with Parkinson’s to practise influencing their own brain activity.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
France
Researchers compare musical activities and thinking abilities in older adults with Parkinson’s or Alzheimer’s disease.
Testing a treatment or activity
Age 60 years and over · Also accepts healthy volunteers
Italy
Researchers study protein structures in body fluids to look for signs that could help identify or monitor conditions affecting the brain.
Learning by observing or collecting information
Age 20 years and over · Also accepts healthy volunteers
Turkey
Researchers investigate links between arm and hand function, balance and the ability to move around in Parkinson’s.
Learning by observing or collecting information
Ages 18 years to 80 years · Does not accept healthy volunteers
Spain
Researchers study high-intensity functional exercise and its effects on physical and thinking abilities in Parkinson’s.
Testing a treatment or activity
Ages 40 years to 80 years · Does not accept healthy volunteers
United States
Researchers use an implanted brain stimulation device to measure brain signals during exercise in people with Parkinson’s.
Learning by observing or collecting information
Ages 20 years to 70 years · Does not accept healthy volunteers
Turkey
Researchers assess whether a six-minute pegboard-and-ring task is a useful way to measure arm endurance in Parkinson’s.
Learning by observing or collecting information
Ages 45 years to 75 years · Does not accept healthy volunteers
Turkey
Researchers use a block-moving task to study what amount of improvement in hand skills is meaningful after physiotherapy in Parkinson’s.
Testing a treatment or activity
Ages 50 years to 80 years · Does not accept healthy volunteers
Turkey
Researchers investigate how much a short Parkinson’s quality-of-life questionnaire needs to change to reflect a measurable improvement.
Learning by observing or collecting information
Ages 40 years to 80 years · Does not accept healthy volunteers
Brazil
Researchers investigate an electrical stimulation approach and its effects on everyday mobility in Parkinson’s.
Testing a treatment or activity
Age 40 years and over · Does not accept healthy volunteers
Italy
Researchers compare rehabilitation approaches delivered remotely in real-world care for people with conditions affecting the brain and nervous system.
Testing a treatment or activity
Ages 25 years to 85 years · Does not accept healthy volunteers
United States
Researchers use donated samples, such as blood or skin cells, to make cells for studying diseases in the laboratory.
Learning by observing or collecting information
Age 30 days and over · Does not accept healthy volunteers
Portugal
Researchers study mania, a state of unusually elevated or irritable mood and increased activity, associated with deep brain stimulation in Parkinson’s.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Canada
Researchers test the safety and feasibility of home spinal stimulation through the skin for blood pressure and bowel problems in selected neurological conditions.
Testing a treatment or activity
Ages 19 years to 70 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.