Colonoscopy may detect Parkinson's before symptoms worsen
NCT ID NCT07217054
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether a protein linked to Parkinson's disease can be found in colon tissue samples taken during a routine colonoscopy. Researchers will compare samples from people with Parkinson's, those with REM sleep behavior disorder, and healthy individuals. The goal is to see if this method could lead to earlier diagnosis and treatment.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could lead to a simple, early test for Parkinson's disease using tissue from a routine colonoscopy.
- What could go wrong
- This is a small, early observational study with only 40 participants. It may not prove the test works reliably for everyone.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2025
- Expected to finish
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Oct 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Adults with clinically confirmed Parkinson's disease or REM Sleep Behavior Disorder who are undergoing routine colonoscopies for standard medical care. Participants must be able to provide informed consent and understand that participation is voluntary and for research purposes.
- Ages
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40 to 99 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Relatively healthy men and women ≥40-99 years of age 2. Patients with a diagnosis of 1. Clinically confirmed PD or 2. Clinically confirmed RBD with no diagnosis of PD, DLB or MSA 3. Patients must have agreed to undergo a routine colonoscopy as part of their screening or surveillance for colon cancer or for diagnostic purposes for the exclusion of other GI diseases Exclusion Criteria: 1. Use of anticoagulants (Plavix or aspirin alone is allowed) 2. Under active treatment for colon cancer; 30-day post anti-cancer treatment allowed 3. Current, ongoing gastrointestinal illness 4. Recent intrabdominal surgery 5. Pregnant or planning to become pregnant before the scheduled colonoscopy 6. Significant cognitive impairment, as determined by study investigators
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Digestive Disease Associates
RECRUITINGBranford, Connecticut, 06405, United States
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