Could Lab-Grown brain cells ease Parkinson's?
NCT ID NCT05901818
First seen Jul 01, 2026 · Last updated Jul 02, 2026 · Updated 1 time
Summary
This early-stage trial tests whether implanting specially grown dopamine-producing cells into the brain is safe and can help people with Parkinson's disease. Six participants receive their own lab-grown cells placed into a brain region that controls movement. The study measures changes in movement scores and tracks any side effects.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- autologous induced neural stem cell-derived dopaminergic precursor cells
- What this could lead to
- If successful, this approach could point toward a way to replace lost dopamine cells in the brain, potentially easing Parkinson's motor symptoms.
- What could go wrong
- This is a very early, small trial with only 6 participants, so results may not apply to everyone. Risks include surgical complications and the possibility that the implanted cells do not work or cause side effects.
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
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 6 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2021
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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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
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30 to 85 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Ages between 30 and 85 years, males or females; Diagnosed to be Parkinson's disease patients according to MDS Parkinson's disease diagnostic criteria; Disease history over 3 years; Hoehn and Yahr Stage less than or equal to 4 during the medication "on" time; Responsive to levodopa treatment (Maximum rate of improvement in MDS-UPDRS, part 3, is over 30%). Exclusion Criteria: Atypical Parkinsonian syndrome or secondary Parkinsonian syndrome; Accompanied with other central nervous system diseases; With other severe systemic diseases or dysfunction; With severe psychiatric disorders; Subjects are using hormone or cytotoxic drugs and cannot stop taking the drug during the trial; With cognitive disorders (MMSE\<24); With severe dyskinesia (MDS-UPDRS part 4, score in 4.1/4.2 ≥ 2); Subjects have undergone previous brain surgery; Subjects are long-term user of anticoagulant; Subjects have intracranial lesions which may affect the surgery or follow-up studies as assessed by imaging; Subjects are unable to undergo MRI or AV133 PET examination; Pregnancy or in preparation for pregnancy; Not suitable to participate in this clinical trial as assessed by the study investigators/physicians.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Xuanwu Hospital Capital Medical University
RECRUITINGBeijing, Beijing Municipality, 100053, China
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Colon tissue may hold clues to telling Parkinson's apart from Look-Alike diseases
- A genetic roadmap for Parkinson's: testing thousands to unlock clues
- Can gentle touch therapy calm Parkinson's tremors?
- Stem cell infusions aim to slow Parkinson's progression
- Can an inhaled levodopa ease Parkinson's OFF episodes? a study asks patients.