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Showing 1–24 of 41 matching trials from the live ClinicalTrials.gov search.
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Terminated Phase 2 Interventional

Open-label Study of Nelotanserin in Lewy Body Dementia With Visual Hallucinations or REM Sleep Behavior Disorder

NCT02871427
View directory record Official record
Conditions
Lewy Body Dementia, Dementia With Lewy Bodies, Parkinson's Disease Dementia, Visual Hallucinations, REM Sleep Behavior Disorder
Interventions
Nelotanserin
Drug
Lead sponsor
Axovant Sciences Ltd.
Industry
Eligibility
50 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
19
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Boca Raton, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2019 · Synced Sep 5, 2026, 2:30 PM EDT
Enrolling by invitation Phase 4 Interventional

DaTSCAN Imaging in Aging and Neurodegenerative Disease

NCT01453127
View directory record Official record
Conditions
Dementia, Parkinsonism, Mild Cognitive Impairment, REM Sleep Behavior Disorder
Interventions
I-123 Ioflupane solution injection prior to SPECT scan (DaTscan), Single photon emission computed tomography (SPECT) scan
Drug · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
40 Years to 90 Years
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Recruiting No phase listed Observational

Natural History Study of Synucleinopathies

NCT01799915
View directory record Official record
Conditions
Patients With Synucleinopathies, Neurogenic Orthostatic Hypotension, Pure Autonomic Failure, REM Sleep Behavior Disorder, Parkinson Disease, Dementia With Lewy Bodies, Multiple System Atrophy, Shy-Drager Disease
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2026
U.S. locations
5
States / cities
Boston, Massachusetts • Ann Arbor, Michigan • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Neuroplasticity in RBD

NCT05471960
View directory record Official record
Conditions
REM Sleep Behavior Disorder
Interventions
Natural progression over time
Other
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years to 75 Years
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Enrolling by invitation Phase 4 Interventional Accepts healthy volunteers

MIBG in Aging and Neurologic Disorders

NCT05514106
View directory record Official record
Conditions
Lewy Body Disease, Dementia, Parkinsonism, Mild Cognitive Impairment, REM Sleep Behavior Disorder
Interventions
meta-iodobenzylguanidine (MIBG) (123I), 123I-MIBG scintigraphy
Drug · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
40 Years to 90 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Active, not recruiting Phase 2 Interventional

Terazosin Effect on Cardiac Changes in Early Parkinson's Disease

NCT04386317
View directory record Official record
Conditions
REM Sleep Behavior Disorder, Pre-motor Parkinson's Disease, Symptomatic Parkinson Disease
Interventions
Terazosin
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
50 Years to 85 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Sleep Profiles in REM Sleep Behavior Disorder

NCT04886076
View directory record Official record
Conditions
Rapid Eye Movement Sleep Behavior Disorder
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
40 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Sep 5, 2026, 2:30 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

5-HT RBD REM Sleep Behavior Disorder

NCT06467461
View directory record Official record
Conditions
Dementia With Lewy Bodies, Parkinson Disease, REM Sleep Behavior Disorder
Interventions
Skin biopsy, Speech testing, Ultra high field 7T MRI
Diagnostic Test
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Retinal Abnormalities as Biomarker of Disease Progression and Early Diagnosis of Parkinson Disease

NCT02640339
View directory record Official record
Conditions
Parkinson Disease, Multiple System Atrophy, REM Sleep Behavior Disorder, Pure Autonomic Failure, Dementia With Lewy Bodies
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
166 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 1, 2020 · Synced Sep 5, 2026, 2:30 PM EDT
Active, not recruiting Phase 2 Interventional

Cardiac Changes in Early Parkinson's Disease: A Follow up Study

NCT04218968
View directory record Official record
Conditions
REM Sleep Behavior Disorder, Pre-motor Parkinson Disease, Symptomatic Parkinson Disease
Interventions
Carvedilol
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Wearable Neural Interfacing System for REM Sleep Restoration and Enhancement

NCT07190287
View directory record Official record
Conditions
Sleep Disturbance, Stress, Psychological, REM Sleep Measurement
Interventions
NEUSleeP system (FUS-EEG wearable device), BrainSonix Pulsar 1002
Device
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 50 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 6, 2025 · Synced Sep 5, 2026, 2:30 PM EDT
Not listed No phase listed Observational

Understanding the Natural History of REM Sleep Behavior Disorder

NCT01674998
View directory record Official record
Conditions
REM Sleep Behavior Disorder
Interventions
Not listed
Lead sponsor
The Parkinson's Institute
Other
Eligibility
21 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
1
States / cities
Sunnyvale, California
Source: ClinicalTrials.gov public record
Updated Aug 28, 2012 · Synced Sep 5, 2026, 2:30 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Quantitative Mapping of Substantia Nigra Iron in Parkinson's Disease (Stages I-IV, REM Sleep Behavior Disorder) and Controls

NCT03675282
View directory record Official record
Conditions
Parkinson Disease, REM Sleep Behavior Disorder, Healthy
Interventions
(11C)PE2I, Ioflupane
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
20 Years to 100 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Sep 5, 2026, 2:30 PM EDT
Terminated Early Phase 1 Interventional

The Effects of Tasimelteon in Participants With REM Behavior Disorder (RBD)

NCT05922995
View directory record Official record
Conditions
REM Behavior Disorder
Interventions
Tasimelteon
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 8, 2025 · Synced Sep 5, 2026, 2:30 PM EDT
Recruiting No phase listed Observational

Colonic Tissue Biopsy Detection of Phosphorylated Alpha-synuclein for Parkinson's Diagnosis or REM Sleep Behavior Disorder

NCT07217054
View directory record Official record
Conditions
PARKINSON DISEASE (Disorder), Parkinson, Parkinson s Disease, Parkinson Disease
Interventions
Not listed
Lead sponsor
CND Life Sciences
Other
Eligibility
40 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Branford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Providing "Good Sleep" for ICU Sedation

NCT01342328
View directory record Official record
Conditions
Sleep Disorders
Interventions
Normal saline infusion, Dexmedetomidine, Propofol
Other · Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 45 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Active, not recruiting Phase 2 Interventional

Terazosin and Parkinson's Disease Extension Study

NCT05109364
View directory record Official record
Conditions
Symptomatic Parkinson Disease, REM Sleep Behavior Disorder, Pre-motor Parkinson's Disease
Interventions
Terazosin therapy
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
50 Years to 85 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Active, not recruiting Phase 2 Interventional

Adrenergic Blockers for Cardiac Changes in Early Parkinson's Disease (Protocol 53136)

NCT03775096
View directory record Official record
Conditions
REM Sleep Behavior Disorder, Pre-motor Parkinson Disease, Symptomatic Parkinson Disease
Interventions
Carvedilol
Drug
Lead sponsor
Michele Tagliati, MD
Other
Eligibility
50 Years to 85 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Terminated Phase 2 Interventional Results available

A Trial of the Drug Donepezil for Sleep Enhancement and Behavioral Change in Children With Autism

NCT01887132
View directory record Official record
Conditions
Autism Spectrum Disorders
Interventions
Donepezil, Placebo
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
24 Months to 50 Months
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 24, 2017 · Synced Sep 5, 2026, 2:30 PM EDT
Recruiting Not applicable Interventional

Behavioral Treatment for Nightmares in REM Sleep Behavior Disorder

NCT06441864
View directory record Official record
Conditions
Nightmare, Nightmare Disorder With Associated Other Sleep Disorder, REM Sleep Behavior Disorder
Interventions
Cognitive Behavioral Therapy for Nightmares
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 5, 2026, 2:30 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

A Pilot Biomarker Study Assessing Alpha-synuclein Aggregates Across Biofluid Reservoirs in Patients With Synucleinopathies

NCT04020198
View directory record Official record
Conditions
Parkinson Disease, Multiple System Atrophy, Rapid Eye Movement Sleep Behavior Disorder, Normal Pressure Hydrocephalus
Interventions
Biomarker assay
Other
Lead sponsor
Stony Brook University
Other
Eligibility
50 Years to 75 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2025 · Synced Sep 5, 2026, 2:30 PM EDT
Enrolling by invitation No phase listed Observational

North American Prodromal Synucleinopathy Consortium

NCT03623672
View directory record Official record
Conditions
REM Sleep Behavior Disorder, Parkinson Disease, Lewy Body Disease, Dementia With Lewy Bodies, Multiple System Atrophy, REM Sleep Parasomnias
Interventions
Not listed
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
9
States / cities
Sun City, Arizona • Los Angeles, California • Redwood City, California + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2024 · Synced Sep 5, 2026, 2:30 PM EDT
Terminated Not applicable Interventional

Extended-Release Melatonin in Patients With Rapid Eye Movement Sleep Behavior Disorder

NCT05307770
View directory record Official record
Conditions
Rapid Eye Movement Sleep Behavior Disorder, Parkinson Disease
Interventions
Immediate Release Melatonin, Extended Release Melatonin
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 28, 2024 · Synced Sep 5, 2026, 2:30 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Intestinal Immunity in Neurologic Disease

NCT06329453
View directory record Official record
Conditions
Multiple Sclerosis, Parkinson Disease, REM Sleep Behavior Disorder
Interventions
Colon Tissue Biopsy
Procedure
Lead sponsor
Yale University
Other
Eligibility
18 Years to 99 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
North Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Sep 5, 2026, 2:30 PM EDT