New imaging tool could spot Parkinson's years before symptoms worsen
NCT ID NCT07265596
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is testing whether a special PET scan using a tracer called [18F] AV-133 can track changes in the brain of people with early, or 'prodromal,' Parkinson's disease. About 100 participants will be scanned at the start, after 12 months, and after 24 months. The goal is to see if this imaging method can measure disease progression and predict when motor symptoms will appear.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- [18F] AV-133 (a radioactive tracer for PET imaging)
- What this could lead to
- If successful, this could lead to better ways to detect Parkinson's disease early and track its progression, helping future treatment trials.
- What could go wrong
- This is a small, early-phase imaging study, not a treatment trial. The tracer may not reliably predict clinical decline, and results may not apply to all patients.
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.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2023
- Expected to finish
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Dec 2027
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.
- Ages
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18 years and older
- 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. A Prodromal PD participant, over the age of 18, confirmed as eligible to proceed to PPMI Clinical Baseline visit. 2. Able to provide informed consent. 3. Male or Female (females must meet additional criteria specified below as applicable) * Females must be of non-childbearing potential or using a highly effective method of birth control 14 days prior to until at least 24 hours after injection of 18F-AV-133 * Non-childbearing potential is defined as a female that must be either postmenopausal (no menses for at least 12 months prior to PET scan) or surgically sterile (bilateral tubal ligation, bilateral oophorectomy or hysterectomy). * Highly effective method of birth control is defined as practicing at least one of the following: A birth control method that results in a less than 1% per year failure rate when used consistently and correctly, such as oral contraceptives for at least 3 months prior to injection, an intrauterine device (IUD) for at least 2 months prior to injection, or barrier methods, e.g., diaphragm or combination condom and spermicide. Periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation methods) is not acceptable. * Females of childbearing potential must not be pregnant, breastfeeding or lactating. * Includes a negative urine pregnancy test prior to injection of 18F-AV-133 on day of PET scan. Exclusion Criteria: 1. Received any of the following medications that might interfere with 18F- AV-133 PET imaging: tetrabenazine (TBZ) or methylphenidate, reserpine, or amphetamine derivative, within 1 month prior to the Baseline 18F-AV-133 injection. 2. Any other medical or psychiatric condition or lab abnormality, which in the opinion of the investigator might preclude participation.
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Genom att skicka in godkänner du våra Användarvillkor
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 study's own enquiry address
This study publishes an address for enquiries. See it below .
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The places running it
8 sites in 6 countries. 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
Show contact details
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Genom att skicka in godkänner du våra Användarvillkor
Locations
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Institute for Neurodegenerative Disorders
RECRUITINGNew Haven, Connecticut, 06510, United States
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Newcastle University
RECRUITINGNewcastle upon Tyne, Tyne and Wear, NE45PL, United Kingdom
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Philipps-University of Marburg
NOT_YET_RECRUITINGHessen, 35043, Germany
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Queen Mary University of London
RECRUITINGLondon, Britain, EC1M 6BQ, United Kingdom
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Radboud University
NOT_YET_RECRUITINGNijmegen, Gelderland, 6525 GC, Netherlands
Contact Email: •••••@•••••
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Tel Aviv Sourasky Medical Center
NOT_YET_RECRUITINGTel Aviv, 64239, Israel
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Toronto Western Hospital
NOT_YET_RECRUITINGToronto, Ontario, M5T2S8, Canada
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University of Pennsylvania
RECRUITINGPhiladelphia, Pennsylvania, 19107, United States
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