TAKE PART IN RESEARCH
Find a Parkinson’s study.
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.
About these summaries and listings
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.
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One place to follow the research.
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.
ClinicalTrials.gov
Import available
Last complete check: 2026-10-11
4689 related source records before matching duplicates
WHO ICTRP
Update needs attention; retaining the last complete import
Last complete check: 2026-10-11
4384 related source records before matching duplicates
European CTIS
Import available
Last complete check: 2026-10-11
73 related source records before matching duplicates
National registries and their WHO processing dates
- Australian New Zealand Clinical Trials Registry — 5 October 2026
- Chinese Clinical Trial Registry — 5 October 2026
- ClinicalTrials.gov — 5 October 2026
- Clinical Trials Information System (CTIS) — 5 October 2026
- EU Clinical Trials Register (EU-CTR) — 5 October 2026
- ISRCTN — 5 October 2026
- The Netherlands National Trial Register — 5 October 2026
- Brazilian Clinical Trials Registry (ReBec) — 14 September 2026
- Clinical Trials Registry - India — 14 September 2026
- Clinical Research Information Service - Republic of Korea — 5 October 2026
- Cuban Public Registry of Clinical Trials — 14 September 2026
- German Clinical Trials Register — 14 September 2026
- Iranian Registry of Clinical Trials — 1 June 2026
- Japan Registry of Clinical Trials (jRCT) — 14 September 2026
- Pan African Clinical Trial Registry — 14 September 2026
- Sri Lanka Clinical Trials Registry — 14 September 2026
- Thai Clinical Trials Registry (TCTR) — 3 August 2026
- Peruvian Clinical Trials Registry (REPEC) — 30 March 2026
- Lebanese Clinical Trials Registry (LBCTR) — 2 February 2026
- International Traditional Medicine Clinical Trial Registry (ITMCTR) — 3 August 2026
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.