Could an Alzheimer's drug slow Parkinson's? new trial aims to find out
NCT ID NCT07544953
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether lecanemab, a drug that clears amyloid plaques in Alzheimer's disease, can also help people with Parkinson's disease who have amyloid buildup in their brains. About 60 adults aged 50-90 with mild cognitive impairment or early dementia will receive lecanemab for 18 months. The main goal is to see if the drug reduces amyloid plaques and potentially slows Parkinson's progression.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Nov 2030
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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50 to 90 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: 1. Patients diagnosed with Parkinson's disease 2. Amyloid deposition confirmed by FBB PET 3. Mild cognitive impairment or early dementia (CDR 0.5 or 1) on neuropsychological tests 4. Adults aged 50-90 years Exclusion Criteria: 1. Cases in which lecanemab administration is contraindicated (based on recommendations from the Korean Dementia Association) 2. Cases in which neuropathologies other than Parkinson's disease or Alzheimer's disease are suspected as the underlying disease
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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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Yonsei University College of Medicine
Seoul, South Korea
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