Misfolded Proteins in the Skin of People With Parkinson's Disease and Other Parkinsonism
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04518059 |
Recruitment Status :
Recruiting
First Posted : August 19, 2020
Last Update Posted : April 12, 2022
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
Condition or disease | Intervention/treatment |
---|---|
Parkinson Disease Parkinsonism Dementia With Lewy Bodies Multiple System Atrophy Progressive Supranuclear Palsy Corticobasal Degeneration | Procedure: punch skin biopsy |
Study Type : | Observational [Patient Registry] |
Estimated Enrollment : | 250 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Target Follow-Up Duration: | 2 Years |
Official Title: | Assessing Skin Biomarkers for Preclinical Diagnosis of PD and Non-PD Parkinsonism |
Actual Study Start Date : | March 12, 2019 |
Estimated Primary Completion Date : | May 31, 2024 |
Estimated Study Completion Date : | May 31, 2024 |

Group/Cohort | Intervention/treatment |
---|---|
Parkinsonism Group
Participants with Parkinson's disease (PD), dementia with Lewy bodies (DLB), multiple system atrophy (MSA), progressive supranuclear palsy (PSP), and corticobasal degeneration (CBD)
|
Procedure: punch skin biopsy
An anesthetic medication is injected to numb the areas of skin and two samples of skin are obtained from punch biopsy. |
Control Group
Participants without parkinsonism
|
Procedure: punch skin biopsy
An anesthetic medication is injected to numb the areas of skin and two samples of skin are obtained from punch biopsy. |
- Amount of alpha-synuclein in the skin [ Time Frame: Cross-sectional at baseline ]Alpha-synuclein will be measured by RT-QuIC and sPMCA
- Change in PSPRS measures of progressive supranuclear palsy (PSP) severity in people with PSP [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]Questionnaire and examination. Lower scores are better.
- Change in UMSARS measures of multiple system atrophy (MSA) severity in people with MSA [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]Questionnaire and examination. Lower scores are better.
- Change in Hoehn and Yahr (H&Y) and modified H&Y Scores [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]Zero to 5 parkinsonism rating scale score. Lower score is better.
- Change in Schwab and England (S&E) Score [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]0% to 100% rating scale score. Higher score is better.
- Change in Montreal Cognitive Assessment (MoCA) [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]Zero to 30 cognitive rating scale score. Higher score is better.
- Change in Epworth Sleepiness Scale (ESS) [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]Zero to 24 sleepiness rating scale score. Lower score is better.
- Change in Hamilton depression scale [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]17 item depression rating scale score. Lower score is better.
- Change in Hamilton anxiety scale [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]14 item depression rating scale score. Lower score is better.
- Change in REM Behavior Disorder Questionnaire [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]10 item depression rating scale score. Lower score is better.
- Change in blood pressure with orthostatic posture [ Time Frame: Baseline, 1 year, and optional 2 year assessment ]Blood pressure from lying down to sitting to standing. Smaller drop in blood pressure is better.
- Amount of alpha-synuclein in the blood [ Time Frame: Baseline, optional 1 year assessment, and optional 2 year assessment ]Alpha-synuclein will be measured in the blood sample
- Change in PDQ-39 [ Time Frame: Baseline, optional 1 year assessment, and optional 2 year assessment ]39 item health status questionnaire. Lower is better.
Biospecimen Retention: Samples With DNA

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 21 Years to 89 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Age 21 years old and age <90 years of age at the time of the baseline visit 1
- Age of diagnosis at least 40 years old for PD, DLB, and PSP and at least 30 years old for MSA
- A confirmed diagnosis of PD, PSP, CBD, MSA, DLB, or healthy control
- Montreal Cognitive Assessment (MoCA) > 10 at the outset of the study
Exclusion Criteria:
- Age 90 or above
- Allergy to local anesthetic
- History of deep brain stimulation (DBS) or other brain surgery prior to Visit 1
- For PD or DLB diagnoses, any other neurodegenerative or central nervous system process that would interfere with examination
- For PD or DLB, history of negative DATscan
- Use of investigational drugs or devices within 60 days prior to baseline visit (except for dietary supplements)
- In control subjects, family history of a neurodegenerative disease in a first degree or second degree blood relative
- History of schizophrenia
- History of antipsychotic medication use or exposure in controls or history of antipsychotic medication leading to parkinsonism (drug induced parkinsonism) in the parkinsonism group
- Blood clotting disorder
- On multiple (more than one) antiplatelet and/or anticoagulant blood thinner medications in combination (except for aspirin if it can be safely held for 1 week)
- Any other medical, psychiatric, or cognitive illness that in the investigator's opinion would interfere with cooperation or ability to undergo the study procedures.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04518059
Contact: Ashley Hawkins | 216-844-1800 | Ashley.Hawkins2@UHhospitals.org | |
Contact: Steven Gunzler, MD | 216-844-8685 |
United States, Ohio | |
University Hospitals Cleveland Medical Center | Recruiting |
Cleveland, Ohio, United States, 44106 | |
Contact: Steven Gunzler, MD | |
Principal Investigator: Steven Gunzler, MD | |
University Hospitals Suburban Health Center | Recruiting |
South Euclid, Ohio, United States, 44121 | |
Contact: Steven Gunzler, MD | |
Principal Investigator: Steven Gunzler, MD |
Principal Investigator: | Steven Gunzler, MD | University Hospitals Cleveland Medical Center and Case Western Reserve University | |
Principal Investigator: | Chen Shu, PhD | University of Alabama at Birmingham | |
Principal Investigator: | Zerui Wang, MD, PhD | Case Western Reserve University | |
Principal Investigator: | Qingzhong Kong, PhD | Case Western Reserve University |
Responsible Party: | Steven Gunzler, MD, Assistant Professor, Neurology, University Hospitals Cleveland Medical Center |
ClinicalTrials.gov Identifier: | NCT04518059 |
Other Study ID Numbers: |
20181189 1U01NS112010-01 ( U.S. NIH Grant/Contract ) |
First Posted: | August 19, 2020 Key Record Dates |
Last Update Posted: | April 12, 2022 |
Last Verified: | April 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Parkinson disease Parkinson's disease dementia with Lewy bodies multiple system atrophy progressive supranuclear palsy |
corticobasal degeneration biomarker parkinsonism alpha-synuclein |
Parkinson Disease Dementia Multiple System Atrophy Shy-Drager Syndrome Supranuclear Palsy, Progressive Parkinsonian Disorders Lewy Body Disease Atrophy Basal Ganglia Diseases Brain Diseases Central Nervous System Diseases Nervous System Diseases Movement Disorders Synucleinopathies Neurodegenerative Diseases |
Neurocognitive Disorders Mental Disorders Pathological Conditions, Anatomical Primary Dysautonomias Autonomic Nervous System Diseases Hypotension Vascular Diseases Cardiovascular Diseases Ophthalmoplegia Ocular Motility Disorders Cranial Nerve Diseases Tauopathies Paralysis Neurologic Manifestations Eye Diseases |