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New brain scans aim to unlock Parkinson's mysteries

NCT ID NCT01496599

Knowledge-focused Sponsor: National Institute of Neurological Disorders and Stroke (NINDS) 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 18, 2026 · Updated 20 times

Summary

This study used brain imaging to understand how Parkinson's disease changes the brain over time. Researchers compared people with definite or possible Parkinson's to healthy volunteers. Participants had up to six visits over nine years, including MRI scans and symptom checks. The goal was to find imaging markers that could help track disease progression.

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

62 people

The number who actually took part.

Started

Jan 2012

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

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

Who is studied

Part 1 (Case-control study): We will study 30 patients with well-defined PD, as defined by the UK Parkinson s Society Brain Bank diagnostic criteria (Hughes et al., 1992, Olanow et al., 2009, Defer et al., 1999). We will also study 15 age-matched healthy volunteers (HVs) as controls. Part 2 (Longitudinal study): We will continue to study subjects from Part 1 periodically over the following 9 years. We will also study 30 subjects with early parkinsonism (EP). EP subjects are defined as individuals who have experienced at least one but fewer than 3 of the cardinal symptoms of PD at the time of enrollment.

Ages

18 to 100 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* INCLUSION CRITERIA: For all subjects: * Age 18 or older. * Subjects must fulfill either the clinically defined PD, prodromal PD or not having any of the red flags following the MDS criteria for PD. * Able to give informed consent or, if there is evidence of cognitive decline, able to appoint a durable power of attorney (DPA) who can give informed consent. EXCLUSION CRITERIA: * More than 7 alcoholic drinks a week for females or 14 alcoholic drinks a week for males. * History of a neurologic disorder such as a brain tumor, stroke, central nervous system infection, multiple sclerosis, a movement disorder other than the ones under study, epilepsy or a history of seizures or any abnormal or focal finding on neurological exam other than that associated with those studied in this protocol. * History of any head injury with loss of consciousness * Pregnancy or positive pregnancy test before the research procedure due to the risks associated with MRI scans. This would exclude subjects from participating in the protocol at that time. * Inability to lie flat on the back for up to 2 hours * Claustrophobia or a feeling of discomfort from being in small, enclosed spaces. * Surgically or traumatically implanted metallic foreign bodies, such as pacemakers, implanted medical pumps, implanted hearing aids, metal plates in the skull or metal implants in the skull or eyes (other than dental fillings) that may be physically hazardous during an MRI, or might distort the images. * Ablative surgery or implanted electrodes and generator for deep brain stimulation * Use of the following therapies which may affect mitochondrial function: Coenzyme Q10, vitamin E, vitamin C, anti-retroviral drugs, chemotherapeutic agents, anti-epileptics agents or antibiotics. (Use ofthese substances will prevent getting MRS scan only). * Have uncontrolled head movements that may impair image data collection

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Conditions

The condition(s) this trial relates to.

Parkinson disease parkinsonian disorder

As listed by the trial registrant

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

Parkinson disease

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    Bethesda, Maryland, 20892, United States

More trials for these conditions

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