This Protocol is a Sub-study Under the PPMI Program. It is a Longitudinal, Single-center Study to Assess the Performance of [18F]AV-133 Imaging Using High and Standard Resolution PET in Individuals Enrolled With Parkinson's Disease (PD) for up to 12 Months.

A Comparative Performance Study Between High and Standard Resolution Positron Emission Tomography Camera Using [18F]AV- 133 in Parkinson's Disease [Dual PET AV-133 in PD]

The study is a longitudinal, single-center study to assess progression of [18F]AV-133 imaging in PD participants. Participants will be followed for up to 12 months. Approximately 45 PD participants and 5 healthy control participants will be recruited from the ongoing PPMI Clinical 002 study. Participants will be comprehensively assessed at Baseline and follow up according to the Schedule of Activities. Participants will undergo PET imaging assessments with [18F]AV-133. After tracer injection, participants will be imaged on PET cameras at each imaging timepoint-one with the NX camera and one with a standard PET camera-in accordance with the Image Acquisition Protocol (IAP).

Study Overview

Status

Recruiting

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

50

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

    • Connecticut
      • New Haven, Connecticut, United States, 06517
        • Recruiting
        • Institute for Neurodegenerative Disorders
        • Principal Investigator:
          • Neha Prakash, MBBS
        • Contact:
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Participants over the age of 18 who are enrolled in the PPMI Clinical protocol with a diagnosis of Parkinson's disease (PD) or Healthy Control participants enrolled in the PPMI Clinical protocol.

  2. Able to provide informed consent.

  3. Male or Female (females must meet additional criteria specified below as applicable)

    1. 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.
    2. 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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Parkinson's Disease & Healthy Controls

This protocol is a sub-study under the PPMI Program. It is a longitudinal, single-center study to assess the performance of [18F]AV-133 imaging using high and standard resolution PET in individuals enrolled with Parkinson's disease (PD) for up to 12 months.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Comparison of tracer uptake between two cameras using Standardized Uptake Value Ratio (SUVR)
Time Frame: 12 months

To compare longitudinal change in [18F]AV-133 PET SUVR in the striatum and other brain regions acquired with NeuroEXPLORER (NX) camera to that acquired with Siemens Biograph camera.

12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Ken Marek, MD, Institute for Neurodegenerative Disorders

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

September 25, 2025

Primary Completion (Estimated)

September 1, 2027

Study Completion (Estimated)

September 1, 2027

Study Registration Dates

First Submitted

September 15, 2026

First Submitted That Met QC Criteria

September 15, 2026

First Posted (Actual)

September 21, 2026

Study Record Updates

Last Update Posted (Actual)

September 21, 2026

Last Update Submitted That Met QC Criteria

September 15, 2026

Last Verified

September 1, 2026

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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