Lecanemab for people with Parkinson's disease who also have Alzheimer's-type amyloid in the brain
Tests lecanemab in people with Parkinson's disease and amyloid buildup in the brain.
Plain-language title generated from the registry record
Registry title: Amyloid Monoclonal Antibody Treatment in PD Patients With Coexistent AD Pathology
Key facts
- Where
- Seoul, South KoreaSee the site
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 50 and 90 years old?
Source: NCT07544953, who can take part
Where in South Korea
- Yonsei University College of MedicineSeoul, South KoreaNo longer taking part
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Yonsei University
- Trial code
- NCT07544953
- Record updated
- 22 April 2026
- Original description
This study aimed to determine the efficacy of amyloid clearance of lecanemab in patients with Parkinson's disease (PD) with amyloid co-pathology. Lecanemab, an anti-amyloid monoclonal antibody, was apporoved by the US FDA in July 2023 and in South Korea in May 2024, as a disease-modifying therapy based on its clinical efficacy and reduction of amyloid plaques in patients with early-stage Alzheimer's disease (AD). AD pathology is also common in PD, and approximately 35% of patients with PD dementia have co-existing AD pathology. Currently, no mediations have been developed to slow the progression of PD. Therefore, this study aimed to determine whether reducing the amyloid burden in patients with PD with co-exsistent AD pathology could potentially slow disease progression. To test it, patients with PD with mild cognitive impairment or early dementia, who were confirmed to have amyloid deposition through amyloid imaging, would be enrolled as a treatment arm, and the degree of reduction of amyloid plaque after 18 months of lecanemab administration would be investigated.Read full original descriptionShow less
Efficacy of Lecanemab in Patients With Parkinson's Disease With Coexistent Alzheimer's Disease
This study aimed to determine the efficacy of amyloid clearance of lecanemab in patients with Parkinson's disease (PD) with amyloid co-pathology. Lecanemab, an anti-amyloid monoclonal antibody, was apporoved by the US FDA in July 2023 and in South Korea in May 2024, as a disease-modifying therapy based on its clinical efficacy and reduction of amyloid plaques in patients with early-stage Alzheimer's disease (AD). AD pathology is also common in PD, and approximately 35% of patients with PD dementia have co-existing AD pathology. Currently, no mediations have been developed to slow the progression of PD. Therefore, this study aimed to determine whether reducing the amyloid burden in patients with PD with co-exsistent AD pathology could potentially slow disease progression. To test it, patients with PD with mild cognitive impairment or early dementia, who were confirmed to have amyloid deposition through amyloid imaging, would be enrolled as a treatment arm, and the degree of reduction of amyloid plaque after 18 months of lecanemab administration would be investigated.
Inclusion: Patients diagnosed with Parkinson's disease; Amyloid deposition confirmed by FBB PET; Mild cognitive impairment or early dementia (CDR 0.5 or 1) on neuropsychological tests; Adults aged 50-90 years.
Exclusion: Cases in which lecanemab administration is contraindicated (based on recommendations from the Korean Dementia Association); Cases in which neuropathologies other than Parkinson's disease or Alzheimer's disease are suspected as the underlying disease.