New scan could spot Parkinson's protein in the brain

NCT ID NCT06303921

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This early-phase study tests a radioactive tracer called 11C-M503 to see if it can detect abnormal alpha-synuclein protein clumps in the brain, which are linked to Parkinson's disease and multiple system atrophy. About 70 adults aged 40-85 with Parkinson's, multiple system atrophy, progressive supranuclear palsy, or healthy volunteers will receive the tracer and undergo PET scans. The goal is to improve diagnosis by distinguishing these conditions based on brain imaging.

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Conditions

The condition(s) this trial relates to.

multiple system atrophy Parkinson disease progressive supranuclear palsy tauopathy

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • University of Pennsylvania

    RECRUITING

    Philadelphia, Pennsylvania, 19104, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Email: •••••@•••••

  • Washington University in St. Louis

    RECRUITING

    St Louis, Missouri, 63110, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • Yale New Haven Hospital

    RECRUITING

    New Haven, Connecticut, 06510, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••