Hunting for hidden clues: study seeks early warning signs of parkinson disease

NCT ID NCT00775853

First seen Jun 24, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study looked for early biological signs (biomarkers) of Parkinson disease in 89 people with certain risk factors, such as family history, loss of smell, blood pressure drops, or a sleep disorder. Participants underwent brain scans, spinal taps, and other tests over several years. The goal was to see if these biomarkers could predict who would later develop Parkinson disease, which could lead to earlier detection and monitoring.

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 study could help identify people at high risk for Parkinson disease years before symptoms appear, enabling earlier monitoring and future preventive strategies.
What could go wrong
This is an observational study, not a treatment trial. It is small (89 participants) and exploratory, so results may not apply broadly. The biomarkers studied may not reliably predict Parkinson disease.

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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.

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    Bethesda, Maryland, 20892, United States

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