Synuclein-One Study
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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. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04700722 |
Recruitment Status :
Active, not recruiting
First Posted : January 8, 2021
Last Update Posted : January 12, 2023
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Condition or disease | Intervention/treatment |
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Parkinson Disease Multiple System Atrophy Dementia With Lewy Bodies Pure Autonomic Failure | Diagnostic Test: Skin Biopsy |
Study Type : | Observational |
Estimated Enrollment : | 500 participants |
Observational Model: | Cohort |
Time Perspective: | Cross-Sectional |
Official Title: | Cutaneous Phosphorlyated α-synuclein Detection as a Biomarker of Synucleinopathy |
Actual Study Start Date : | January 4, 2021 |
Estimated Primary Completion Date : | January 11, 2023 |
Estimated Study Completion Date : | August 31, 2023 |

Group/Cohort | Intervention/treatment |
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Parkinson's disease
Looking for 105 patients with a clinically established diagnosis of Parkinson's disease between 40-99 years of age.
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Diagnostic Test: Skin Biopsy
Test accuracy and precision of skin biopsy detection of phosphorylated α-synuclein, define sensitivity and specificity of skin biopsy detection of phosphorylated α-synuclein deposition for the diagnosis of synucleinopathies and to differentiate between the synucleinopathies by quantitative measurement of phosphorylated α-synuclein with skin biopsies. |
Multiple System Atrophy
Looking for 40 patients with a clinically established diagnosis of Multiple System Atrophy between 40-99 years of age.
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Diagnostic Test: Skin Biopsy
Test accuracy and precision of skin biopsy detection of phosphorylated α-synuclein, define sensitivity and specificity of skin biopsy detection of phosphorylated α-synuclein deposition for the diagnosis of synucleinopathies and to differentiate between the synucleinopathies by quantitative measurement of phosphorylated α-synuclein with skin biopsies. |
Dementia with Lewy bodies
Looking for 95 patients with a clinically established diagnosis of Dementia with Lewy bodies between 40-99 years of age.
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Diagnostic Test: Skin Biopsy
Test accuracy and precision of skin biopsy detection of phosphorylated α-synuclein, define sensitivity and specificity of skin biopsy detection of phosphorylated α-synuclein deposition for the diagnosis of synucleinopathies and to differentiate between the synucleinopathies by quantitative measurement of phosphorylated α-synuclein with skin biopsies. |
Pure Autonomic Failure
Looking for 60 patients with a clinically established diagnosis of Pure Autonomic Failure between 40-99 years of age.
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Diagnostic Test: Skin Biopsy
Test accuracy and precision of skin biopsy detection of phosphorylated α-synuclein, define sensitivity and specificity of skin biopsy detection of phosphorylated α-synuclein deposition for the diagnosis of synucleinopathies and to differentiate between the synucleinopathies by quantitative measurement of phosphorylated α-synuclein with skin biopsies. |
Healthy Controls
No history of clinical or symptoms suggestive of Parkinson's disease, Multiple System Atrophy, Dementia with Lewy bodies or Pure Autonomic Failure between 40-99 years of age.
|
Diagnostic Test: Skin Biopsy
Test accuracy and precision of skin biopsy detection of phosphorylated α-synuclein, define sensitivity and specificity of skin biopsy detection of phosphorylated α-synuclein deposition for the diagnosis of synucleinopathies and to differentiate between the synucleinopathies by quantitative measurement of phosphorylated α-synuclein with skin biopsies. |
- Primary Outcome 1 [ Time Frame: 2 years ]To define test accuracy and precision of skin biopsy detection of phosphorylated α-synuclein.
- Primary Outcome 2 [ Time Frame: 2 years ]To define sensitivity and specificity of skin biopsy detection of phosphorylated α-synuclein.
- Primary Outcome 3 [ Time Frame: 2 years ]To differentiate between the synucleinopathies by quantitative measurement of phosphorylated α-synuclein with skin biopsies.
Biospecimen Retention: Samples Without DNA

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Ages Eligible for Study: | 40 Years to 99 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Sampling Method: | Probability Sample |
Inclusion Criteria:
- Male and female between 40-99 years of age
- Prior clinical diagnosis of Parkinson's disease, Multiple System Atrophy, Dementia with Lewy bodies or Pure Autonomic Failure
- Health Subjects, no history of clinical or symptoms suggestive with synucleinopathy
Exclusion Criteria:
- Clinical evidence of severe vascular disease (history of ulceration, poor wound healing, vascular claudication)
- Clinically active coronary artery or cerebrovascular disease
- Current smoker or alcoholism
- History of allergic reaction to local anesthesia for skin biopsies
- Use of blood thinners (aspirin or Plavix alone is allowed)
- Significantly impaired wound healing or history of scarring or keloid formation
- Healthy individuals or individuals with synucleinopathy is disease may be explained by other causes: recent history of encephalitis, Cortical dementia of Alzheimer's type, Whipple's disease, toxin exposure, repeated head injury and stepwise disease progression suggestive of vascular etiology

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): NCT04700722

Principal Investigator: | Todd Levine, MD | CND Life Sciences: www.cndlifesciences.com |
Responsible Party: | CND Life Sciences |
ClinicalTrials.gov Identifier: | NCT04700722 |
Other Study ID Numbers: |
CND-100 |
First Posted: | January 8, 2021 Key Record Dates |
Last Update Posted: | January 12, 2023 |
Last Verified: | January 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Plan Description: | IPD will be shared with researchers that are involved in the study. |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Neurodegenerative Diseases |
Parkinson Disease Multiple System Atrophy Shy-Drager Syndrome Lewy Body Disease Pure Autonomic Failure Parkinsonian Disorders Basal Ganglia Diseases Brain Diseases Central Nervous System Diseases Nervous System Diseases Movement Disorders |
Synucleinopathies Neurodegenerative Diseases Dementia Neurocognitive Disorders Mental Disorders Primary Dysautonomias Autonomic Nervous System Diseases Hypotension Vascular Diseases Cardiovascular Diseases |