Can a blood test predict who benefits from brain surgery for Parkinson's?
NCT ID NCT07376278
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study is looking for clues in the blood that might tell doctors ahead of time whether deep brain stimulation (DBS) surgery will work well for a person with Parkinson's disease. Researchers will collect blood and leftover brain tissue from 30 people who are already scheduled for DBS. They will measure proteins and RNA in the blood and compare them to standard Parkinson's rating scales to see if any markers predict good or poor outcomes.
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 help doctors predict which Parkinson's patients will benefit most from deep brain stimulation surgery.
- What could go wrong
- This is a small observational study, not a treatment trial. It may not find reliable predictors, and results 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
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About 30 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Feb 2038
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.
Who is studied
Parkinson's disease patients of the movement disorder clinic at Queen Elizabeth Hospital Hong Kong
- Ages
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18 to 75 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.
Show the full entry requirements Hide 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: 1. Diagnosis of "Clinically Established PD" as defined by the Movement Disorder Society Clinical Diagnostic Criteria for Parkinson's disease (MDS-PD criteria) 2. Referred for DBS according to standard local clinical guidelines 2a. Significant motor complications despite optimized pharmacological treatment 2ai. UPDRS motor score \>30/108 in the off-medication state 2aii. Hoehn and Yahr staging \>2.5/5 in the off-medication state 2b. Dopamine responsive 2bi. \>33% improvement in UPDRS motor score after levodopa administration 2c. Age ≤75 years 2d. No contraindication to surgery or other significant comorbidity with limited life expectancy 2e. No significant psychiatric problems or cognitive impairment 2f. No structural lesions or features suggestive of atypical parkinsonism or other mimickers of idiopathic PD on neuroimaging Exclusion Criteria: 1. Unwilling to undergo blood sampling for study purposes 2. Evidence of Parkinsonism due to heavy metal exposure 3. History of neurodevelopmental disorder, neurodegenerative disease other than PD, CNS infection, neuroinflammatory disease (e.g. multiple sclerosis, CNS lupus), malignancy within the last 10 years, cerebrovascular accident, HIV infection, systemic autoimmune disease, alcohol dependence or other substance use 4. Unable to pass DBS pre-operative assessment or unwilling to undergo DBS
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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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The Hong Kong University of Science and Technology
RECRUITINGHong Kong, Hong Kong
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Other studies related to the condition(s) this trial covers.
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- Can a Two-Drug combo quiet the tremors Parkinson's patients still feel?
- Brain signals from daily life may sharpen Parkinson's stimulation
- Brain surgery for Parkinson's: can we foresee the confusion that follows?