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

June 8, 2026 updated by: Irina Anna Skylar-Scott, Stanford University
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.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

40

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Participants who have preclinical (early stage) or symptomatic Lewy Bodies Dementia.

Description

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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Symptomatic Lewy body disease (LBD)
Participants undergo testing for alpha-synuclein, participate in a disclosure visit for their alpha-synuclein status, and fill out questionnaires before and after disclosure to assess their reaction to this information.
Other: LBD Biomarker Education and Disclosure
In-depth interviews as well as questionnaires will be conducted with individuals who have preclinical (early stage) or symptomatic LBD.
Asymptomatic (participants without symptoms of LBD or MSA)
Participants underwent testing for alpha-synuclein. They will participate in a disclosure visit for their alpha-synuclein status and fill out questionnaires before and after disclosure to assess their reaction to this information.
Other: LBD Biomarker Education and Disclosure
In-depth interviews as well as questionnaires will be conducted with individuals who have preclinical (early stage) or symptomatic LBD.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
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.
Baseline, Day 14, Day 30, Day 182

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Stanford University

Investigators

  • Principal Investigator: Irina A Skylar-Scott, MD, Stanford University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

November 1, 2026

Primary Completion (Estimated)

November 1, 2030

Study Completion (Estimated)

November 1, 2030

Study Registration Dates

First Submitted

June 8, 2026

First Submitted That Met QC Criteria

June 8, 2026

First Posted (Actual)

June 15, 2026

Study Record Updates

Last Update Posted (Actual)

June 15, 2026

Last Update Submitted That Met QC Criteria

June 8, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 87329

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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