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Blood test could spot Parkinson's earlier, study hopes

NCT ID NCT00465790

Knowledge-focused Sponsor: Institut National de la Santé Et de la Recherche Médicale, France Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study looked for specific gene patterns in the blood that could help diagnose Parkinson's disease and distinguish it from similar conditions. Researchers analyzed blood samples and brain scans from 219 people with Parkinson's or related disorders. The goal is to develop a non-invasive diagnostic test that could lead to earlier and more accurate detection.

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 blood test to help diagnose Parkinson's disease earlier and more accurately.
What could go wrong
This is an observational study, not a treatment trial. The results may not lead to a usable test, and the findings 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.

Participants

219 people

The number who actually took part.

Start date

Oct 2007

Finished

Jun 2012

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients with Parkinson's disease and related

Ages

18 to 90 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: * Diagnosis of Parkinson's disease * Ability to understand the aim of the study * Ability to sign the consent form Exclusion Criteria: * Non ability to understand the aim of the study * Non ability to sign the consent form * To be over 18

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Conditions

The condition(s) this trial relates to.

dopa-responsive dystonia Dystonia dystonic disorder Huntington disease Lewy body dementia Lewy Body Disease multiple system atrophy Parkinson disease progressive supranuclear palsy

As listed by the trial registrant

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

Diffuse lewy body disease Dystonia Huntington disease Multiple system atrophy Parkinson disease Progressive supranuclear palsy

Contacts and locations

Locations

  • INSERM Unit 679

    Paris, 75013, France

  • Meditterranean Institute for Life Sciences

    Split, Croatia

  • University Hospital Tübingen

    Tübingen, Germany

  • University Medical Center Ljubljana

    Ljubljana, 1000, Slovenia

  • University of Lübeck and Neuroimage Nord

    Lübeck, Germany

More trials for these conditions

Other studies related to the condition(s) this trial covers.