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.
Browse worldwide registries ↓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 include sites with matching or unreported recruitment status and exclude known closed sites.
China
Researchers are testing a home brain stimulation approach with remote supervision, looking at safety and changes in slow movement, stiffness and walking.
Testing a treatment or activity
Ages 40 years to 80 years · Does not accept healthy volunteers
United States
Researchers study how speaking difficulties relate to learning to understand speech in people with Parkinson’s, to inform future treatment approaches.
Testing a treatment or activity
Age 45 years and over · Does not accept healthy volunteers
United States
Researchers compare two types of brain imaging in people with Parkinson’s and follow changes over time as part of a larger research programme.
Testing a treatment or activity
Age 18 years and over · Also accepts healthy volunteers
United States
Researchers are studying long-term use of buntanetap in selected people with Parkinson’s, including previous trial participants and people receiving implanted brain stimulation.
Testing a treatment or activity
Ages 40 years to 85 years · Does not accept healthy volunteers
Canada, Netherlands
This early study checks whether the experimental medicine ALN-SNCA can be given safely and tolerated by adults with early Parkinson’s.
Testing a treatment or activity
Ages 50 years to 80 years · Does not accept healthy volunteers
United States
Researchers test a liquid study medicine containing low-dose carbon monoxide under clinical supervision, measuring safety and how the body handles it.
Testing a treatment or activity
Ages 40 years to 80 years · Does not accept healthy volunteers
United States
Researchers compare two doses of a resveratrol product with an inactive treatment in people with Parkinson’s, with a focus on safety.
Testing a treatment or activity
Ages 55 years to 85 years · Does not accept healthy volunteers
United States
Researchers examine a Parkinson’s-related protein in skin samples to study whether it helps identify people with essential tremor who later develop Parkinson’s.
Learning by observing or collecting information
Ages 50 years to 85 years · Does not accept healthy volunteers
United States
People already scheduled for brain stimulation surgery have additional temporary recordings and stimulation so researchers can learn about movement control.
Testing a treatment or activity
Ages 18 years to 75 years · Does not accept healthy volunteers
United States
Researchers are studying the course of movement disorders, including how symptoms develop and how these conditions may run in families.
Learning by observing or collecting information
Ages 2 years to 100 years · Also accepts healthy volunteers
Hong Kong
Researchers collect information on Parkinson’s-related and other brain conditions to better understand their development and changes over time.
Learning by observing or collecting information
Ages 18 years to 80 years · Also accepts healthy volunteers
United States
Researchers use a type of brain scan to compare markers of inflammation in people with conditions that damage brain cells and healthy volunteers.
Testing a treatment or activity
Ages 18 years to 99 years · Also accepts healthy volunteers
Switzerland
Researchers compare therapy involving horses with usual care, looking at walking, balance, movement and quality of life in people with Parkinson’s.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
Taiwan
Researchers study how people with Parkinson’s use what they see to plan and adjust movements, including movements used in everyday activities.
Learning by observing or collecting information
Age 18 years and over · Also accepts healthy volunteers
United States
Researchers study whether stimulation applied through the head affects finding words, thinking, sensation and movement control in people with Parkinson’s.
Testing a treatment or activity
Ages 50 years to 90 years · Does not accept healthy volunteers
Argentina, Austria, Germany, Italy + 4 more
Researchers collect worldwide treatment results from people using the Vercise brain stimulation system for Parkinson’s.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
United States
Researchers use questionnaires to study tremor and quality of life after focused radiation treatment for essential tremor or Parkinson’s-related shaking.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Australia, France, United Kingdom
Researchers are testing the study medicine MTX325 as a possible future treatment aimed at changing the course of Parkinson’s.
Testing a treatment or activity
Ages 18 years to 75 years · Also accepts healthy volunteers
Pakistan
Researchers compare benzhexol and procyclidine for tremor in people with Parkinson’s who already take levodopa.
Testing a treatment or activity
Ages 40 years to 70 years · Does not accept healthy volunteers
United States
Researchers are testing automated adjustments to stimulation settings in people with Parkinson’s who have a Percept brain stimulator.
Testing a treatment or activity
Ages 25 years to 75 years · Does not accept healthy volunteers
EXTEND YOUR SEARCH
The listings above come from ClinicalTrials.gov, which includes international studies. They are not an exhaustive worldwide list. Use WHO’s international search and these regional registries to find studies registered elsewhere. These links open separate registries; their records are not yet imported here.
Search for Parkinson disease and check recruitment status, local sites and eligibility. The same study can appear in several registries.
Registry directory based on the WHO primary registry network. Links checked against the directory on 11 October 2026.