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NCT Number: NCT07646652

Alpha-synuclein Education and Disclosure in Individuals With Preclinical and Symptomatic Lewy Body Disease

The goal of the study is to assess if learning one's Lewy Body Dementia (LBD) biomarker test result impacts longitudinal psychosocial and behavioral responses and to identify factors that moderate and mediate these outcomes.

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Key information

Conditions

Lewy Body Disease Basal Ganglia Diseases Brain Diseases Central Nervous System Diseases Dementia Mental Disorders Movement Disorders Nervous System Diseases Neurocognitive Disorders Neurodegenerative Diseases Parkinsonian Disorders Synucleinopathies

Age range

40 year–85 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

All Participants

  • Able to provide 1) written, informed consent or 2) assent if a care partner can provide consent.
  • Access to a primary care or neurology provider for ongoing care.
  • 1) willing to undergo skin biopsy or lumbar puncture for alpha-synuclein testing or 2) has access to as-yet undisclosed skin biopsy or lumbar puncture alpha-synuclein testing results.

Healthy/Asymptomatic Arm

  • Undergoing testing for defined reason (e.g., research study)
  • Mini-Mental State Examination score between 26 and 30 (or MoCA between 25 and 30)
  • General good health (no diseases expected to interfere with the study)

Symptomatic Arm [Concern for dementia with Lewy bodies (DLB), Parkinson's disease (PD), or multiple system atrophy (MSA)]

  • Referred by a neurologist or movement disorder specialist
  • Adults with any of the following: symptomatic LBD, mild cognitive impairment with Lewy body (MCI-LB), Parkinson's disease dementia (PDD), MCI in Parkinson's disease (PD-MCI), or criteria for multiple system atrophy (MSA).

Exclusion criteria

All Participants

  • Clinician judgment that disclosure poses unacceptable psychological risk.
  • Concurrent enrollment in a trial with conflicting disclosure protocols.

Healthy/Asymptomatic Arm • Neurological diagnosis at the time of biomarker assessment (e.g., Alzheimer's disease, Parkinson's disease, normal pressure hydrocephalus, brain tumor, progressive supranuclear palsy, seizure disorder, subdural hematoma, etc.)

Symptomatic Arm

  • Absence of a caregiver who can complete assessments.

Treatment and study plan

LBD Biomarker Education and Disclosure

Other

In-depth interviews as well as questionnaires will be conducted with individuals who have preclinical (early stage) or symptomatic LBD.

Primary outcomes

  1. Change in distress scale score as measured by the Impact of Event Scale-Revised

    Time frame: Baseline, Day 14, Day 30, Day 182

    Distress related to biomarker disclosure will be assessed via the validated Impact of Event Scale-Revised (IES-R, a 22 item self-report measure). Scores range from 0 to 88; higher scores mean greater distress.

Sponsors and collaborators

Lead sponsor

Stanford University

Other

Registry information

Important dates

Study start
2026
Primary completion
2030
Study completion
2030
First posted
Jun 15, 2026
Registry last updated
Jun 15, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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