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Could a leg nerve graft help the brain? new trial for Parkinson's and MSA

NCT ID NCT06683365

Disease control Sponsor: Craig van Horne, MD, PhD Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Sep 01, 2026 · Updated 2 times

Summary

This early-stage study tests if implanting a small piece of the participant's own leg nerve into a key brain area is safe and feasible for people with early Parkinson's disease or Multiple System Atrophy. Seven people will take part; four will get the nerve graft and three will have a sham procedure. The goal is to see if the procedure can be done safely and to gather initial data for future research.

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.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 7 people

The number the study aims to enrol. It can still change while the study runs.

Started

Feb 2025

Expected to finish

Dec 2030

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Ages

40 to 75 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: * Diagnosis of clinically established or clinically probable PD or MSA as defined by MDS criteria * Disease duration greater than 2 years * Age 40-75, inclusive * MDS-Unified Parkinson's Disease Rating Scale (UPDRS) Part III greater than or equal to 20 points but less than or equal to 35 points, off anti-parkinsonian medication for PD or MDS-Unified Multiple System Atrophy Rating Scale (UMSARS) less than or equal to 30 points off anti-parkinsonian medication * No MDS-UPDRS Part III score \>3 on items 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.14 while off medication * Able and willing to undergo ioflupane/SPECT * Able to tolerate the surgical procedure * Able to undergo all planned assessments * Available access to the sural nerve Exclusion Criteria: * Previous PD surgery or intracranial surgery * Ongoing major medical or psychiatric disorder incl. depression and psychosis * Other concomitant treatment with neuroleptics * Typical, nonparkinsonian syndrome ioflupane/SPECT signal * Unable to undergo an MRI * An obstructed trajectory path to the substantia nigra * Significant microvascular disease * Use of anticoagulants other than aspirin * Female who is pregnant, lactating, or of child-bearing potential unwilling to use an adequate birth control method during the period of the study * Consent capacity will be assessed and determined during and throughout a participant's neuropsychological exam. A participant who experiences a decline in consent capacity prior to surgery, will be removed from the study by the PI. A decline in consent capacity after surgery will not result in the removal of the participant in the study.

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Conditions

The condition(s) this trial relates to.

multiple system atrophy Parkinson disease synucleinopathy

As listed by the trial registrant

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

Multiple system atrophy Parkinsons disease

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • University of Kentucky

    RECRUITING

    Lexington, Kentucky, 40536, United States

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