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Showing 1–24 of 93 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Parkinson's Disease Dementia Clear all
Completed Early Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate a Potential PET Radioligand for Imaging Alpha-synuclein Deposits in the Brain

NCT06445465
View directory record Official record
Conditions
Alpha-Synucleinopathy, Parkinson's Disease, Dementia With Lewy Bodies, Multisystem Atrophy
Interventions
[18F]MNI-1216
Drug
Lead sponsor
Invicro
Other
Eligibility
21 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 18, 2025 · Synced Jun 10, 2026, 4:22 AM EDT
Withdrawn No phase listed Observational

A Pilot Study to Explore the Role of Gut Flora in Parkinson's Disease

NCT04148326
View directory record Official record
Conditions
Parkinson Disease, Parkinsons Disease With Dementia, Parkinson-Dementia Syndrome, Parkinson Disease 2, Parkinson Disease 3, Parkinson Disease 4
Interventions
No Intervention
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced Jun 10, 2026, 4:22 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

At-Home Research Study for Patients With Autoimmune, Inflammatory, Genetic, Hematological, Infectious, Neurological, CNS, Oncological, Respiratory, Metabolic Conditions

NCT01931644
View directory record Official record
Conditions
All Diagnosed Health Conditions, ADD/ADHD, Alopecia Areata, Ankylosing Spondylitis, Asthma, Atopic Dermatitis Eczema, Beta Thalassemia, Bipolar Disorder, Breast Cancer, Celiac Disease, Cervical Cancer, Chronic Inflammatory Demyelinating Polyneuropathy, Chronic Kidney Diseases, Chronic Obstructive Pulmonary Disease, Colon Cancer, Colorectal Cancer, Crohn's Disease, Cystic Fibrosis, Depression, Diabetes Mellitus, Duchenne Muscular Dystrophy, Endometriosis, Epilepsy, Facioscapulohumeral Muscular Dystrophy, G6PD Deficiency, General Anxiety Disorder, Hepatitis B, Hereditary Hemorrhagic Telangiectasia, HIV/AIDS, Human Papilloma Virus, Huntington's Disease, Idiopathic Thrombocytopenic Purpura, Insomnia, Kidney Cancer, Leukemia, Lung Cancer, Lupus Nephritis, Lymphoma, Melanoma, Multiple Myeloma, Multiple Sclerosis, Myositis, Myotonic Dystrophy, Ovarian Cancer, Pancreatic Cancer, Parkinson's Disease, Polycystic Kidney Diseases, Prostate Cancer, Psoriasis, Psoriatic Arthritis, Rosacea, Scleroderma, Sickle Cell Anemia, Sickle Cell Trait, Sjogren's Syndrome, Skin Cancer, Spinal Muscular Atrophy, Systemic Lupus Erythematosus, Thrombotic Thrombocytopenic Purpura, Trisomy 21, Ulcerative Colitis
Interventions
Not listed
Lead sponsor
Sanguine Biosciences
Industry
Eligibility
18 Years to 100 Years
Enrollment
17,667 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 17, 2024 · Synced Jun 10, 2026, 4:22 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Brain Stimulation on Learning and Reasoning

NCT00001776
View directory record Official record
Conditions
Cerebellar Disease, Dementia, Healthy, Parkinson's Disease
Interventions
Cadwell Rapid Rate Magnetic Stimulator
Device
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
122 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jun 10, 2026, 4:22 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Imaging Studies of Cognitive Impairment in Parkinson s Disease

NCT01862744
View directory record Official record
Conditions
Parkinson Disease, Dementia
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
40 Years and older
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 11, 2019 · Synced Jun 10, 2026, 4:22 AM EDT
Recruiting No phase listed Observational

Modifiable Variables in Parkinsonism (MVP)

NCT02194816
View directory record Official record
Conditions
Parkinson's Disease, Parkinsonism, MSA - Multiple System Atrophy, Progressive Supranuclear Palsy, Shy-Drager Syndrome, Corticobasal Degeneration, Dementia With Lewy Bodies, Pick Disease, Olivopontocerebellar Atrophies
Interventions
Not listed
Lead sponsor
Bastyr University
Other
Eligibility
19 Years and older
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2030
U.S. locations
1
States / cities
Kenmore, Washington
Source: ClinicalTrials.gov public record
Updated Mar 24, 2022 · Synced Jun 10, 2026, 4:22 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Brain Health Registry: An Online Registry to Identify and Assess Subjects for Brain Research

NCT02402426
View directory record Official record
Conditions
Healthy, Neurodegenerative Disease
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
200,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2030
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Research Involving Subjects With Parkinson's Disease, Alzheimer Disease and Healthy Controls

NCT01461109
View directory record Official record
Conditions
Parkinson Disease, Alzheimer Disease
Interventions
[18F] CFPyPB
Drug
Lead sponsor
Institute for Neurodegenerative Disorders
Other
Eligibility
18 Years to 90 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 3, 2014 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Not applicable Interventional Results available

Memantine for Treatment of Cognitive Impairment in Patients With Parkinson's Disease and Dementia

NCT00294554
View directory record Official record
Conditions
Parkinson's Disease, Cognitive Impairment, Dementia
Interventions
Memantine, Placebo Oral Tablet
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
50 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2017 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Not applicable Interventional

Laughter Therapy Effects on Mood, Stress and Self-efficacy in People With Neurological Diseases.

NCT02750982
View directory record Official record
Conditions
Alzheimer's Disease, Amyotrophic Lateral Sclerosis, Brain Injury, Huntington's Disease, Multiple Sclerosis, Parkinson's Disease, Stroke, Spinal Cord Injury
Interventions
Laughter Therapy
Other
Lead sponsor
Brown, Theodore R., M.D., MPH
Individual
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Kirkland, Washington
Source: ClinicalTrials.gov public record
Updated Sep 25, 2018 · Synced Jun 10, 2026, 4:22 AM EDT
Withdrawn Not applicable Interventional

Attention Modulation for Treatment of Parkinson's Disease and Dementia With Lewy Bodies

NCT01256905
View directory record Official record
Conditions
Parkinsons Disease, Lewy Bodies Disease
Interventions
Armodafinil
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
50 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 22, 2021 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Not applicable Interventional Results available

Electronic-health Application To Measure Outcomes REmotely Clinical Trial

NCT02418546
View directory record Official record
Conditions
Neurodegenerative Disease, Weight Loss, Amyotrophic Lateral Sclerosis, Parkinson's Disease, Huntington's Disease, Cachexia
Interventions
In-Person Nutritional Counseling by a Registered Dietitian, Nutritional counseling using an e-Health Application
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 19, 2020 · Synced Jun 10, 2026, 4:22 AM EDT
Withdrawn Phase 1 Interventional

A Study to Evaluate ENT-01 for the Treatment of Parkinson's Disease Dementia

NCT03938922
View directory record Official record
Conditions
Parkinson Disease, Dementia
Interventions
Active Investigational Treatment ENT-01
Drug
Lead sponsor
Enterin Inc.
Industry
Eligibility
30 Years to 90 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
3
States / cities
Fresno, California • Toms River, New Jersey • Dayton, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 29, 2024 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of [18F]MNI-777 PET as a Marker of Tau Pathology in Subjects With Tauopathies Compared to Healthy Subjects

NCT02103894
View directory record Official record
Conditions
Alzheimer's Disease (AD), Parkinson's Disease (PD), Chronic Traumatic Encephalopathy (CTE), Progressive Supranuclear Palsy (PSP), Frontal Temporal Dementia (FTD), Pick's Disease, Tauopathies
Interventions
[18F]T807 ([18F]MNI-777)
Drug
Lead sponsor
Molecular NeuroImaging
Other
Eligibility
18 Years to 85 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 15, 2016 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Phase 2 Interventional Results available

Study Evaluating Nelotanserin for Treatment of REM Sleep Behavior Disorder in Subjects With Dementia (DLB or PDD)

NCT02708186
View directory record Official record
Conditions
Dementia With Lewy Bodies, REM Sleep Behavior Disorder, Parkinson's Disease Dementia
Interventions
Nelotanserin, Placebo
Drug
Lead sponsor
Axovant Sciences Ltd.
Industry
Eligibility
50 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
23
States / cities
Birmingham, Alabama • Phoenix, Arizona • Sun City, Arizona + 20 more
Source: ClinicalTrials.gov public record
Updated May 19, 2020 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Nilotinib in Cognitively Impaired Parkinson Disease Patients 001

NCT02281474
View directory record Official record
Conditions
Parkinson's Disease, Parkinson's Disease Dementia, Diffuse Lewy Body Disease
Interventions
Nilotinib
Drug
Lead sponsor
Georgetown University
Other
Eligibility
40 Years to 90 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2014
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Dec 15, 2015 · Synced Jun 10, 2026, 4:22 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Reducing Caregiver Stress and Sleep Disturbances in Patients With Progressive Dementia

NCT00178568
View directory record Official record
Conditions
Sleep Disorders
Interventions
Stress Management and Healthy Sleep Practices
Behavioral
Lead sponsor
Kathy Kennedy
Other
Eligibility
60 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2009
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 27, 2015 · Synced Jun 10, 2026, 4:22 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Biospecimen and Clinical Data Study on Patients for Drug & Biomarker Discovery

NCT01592552
View directory record Official record
Conditions
Alzheimer's Disease, Multiple Sclerosis, Parkinson's Disease, Huntington's Disease, Amyotrophic Lateral Sclerosis (ALS)
Interventions
Not listed
Lead sponsor
Sanguine Biosciences
Industry
Eligibility
18 Years to 100 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Sherman Oaks, California
Source: ClinicalTrials.gov public record
Updated Nov 21, 2023 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Phase 2 Interventional

Study Evaluating Nelotanserin for Treatment of Visual Hallucinations in Subjects With Lewy Body Dementia

NCT02640729
View directory record Official record
Conditions
Lewy Body Dementia, Visual Hallucinations
Interventions
Nelotanserin, Placebo
Drug
Lead sponsor
Axovant Sciences Ltd.
Industry
Eligibility
50 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
10
States / cities
Fountain Valley, California • Boca Raton, Florida • Orlando, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 17, 2018 · Synced Jun 10, 2026, 4:22 AM EDT
Not yet recruiting Early Phase 1 Interventional Accepts healthy volunteers

Mild Cognitive Impairment Community Screening and Early Intervention Via Stem Cell Therapy and Wearable Brain Computer Interface Device.

NCT07214974
View directory record Official record
Conditions
Mild Cognitive Impairment (MCI), Early Stages of Cognitive Decline, Alzheimer's Disease Dementia, Alzheimer's Disease Diagnosis, Alzheimer's Disease and Related Dementias, Parkinson's Disease, Parkinson's Disease (PD), Parkinson's Disease With Wearing-off Motor Fluctuations, Dementia (Diagnosis), Dementia MCI (Mild Cognitive Impairment)
Interventions
Structured wellness care, Wearable brain-computer interface devices, Stem Cell Therapy - Experimental, Control - Placebo Comparator
Behavioral · Device · Biological + 1 more
Lead sponsor
Noah Tech, Corp.
Industry
Eligibility
55 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Palisades Park, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Phase 3 Interventional

Safety Study of AVP-923 in the Treatment of IEED (Involuntary Emotional Expression Disorder) Also Known as Pseudobulbar Affect (Episodes of Uncontrolled Crying and/or Laughter)

NCT00056524
View directory record Official record
Conditions
Alzheimer's Disease, Stroke, Parkinson's Disease, Traumatic Brain Injury
Interventions
AVP-923
Drug
Lead sponsor
Avanir Pharmaceuticals
Industry
Eligibility
18 Years to 80 Years
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
39
States / cities
Phoenix, Arizona • La Jolla, California • Los Angeles, California + 31 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2016 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Not applicable Interventional Results available

Cognitive Dysfunction in Parkinson's Disease

NCT02346708
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Real TMS, Sham TMS
Device
Lead sponsor
University of Colorado, Denver
Other
Eligibility
40 Years and older
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 8, 2021 · Synced Jun 10, 2026, 4:22 AM EDT
Completed Phase 2 Interventional Results available

Study Assessing Efficacy and Safety of AKST4290 in Subjects With Parkinson's Disease on Stable Dopaminergic Treatment

NCT04369430
View directory record Official record
Conditions
Parkinson Disease
Interventions
AKST4290, Placebo
Drug
Lead sponsor
Alkahest, Inc.
Industry
Eligibility
50 Years to 80 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Atlanta, Georgia • West Bloomfield, Michigan • Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 9, 2022 · Synced Jun 10, 2026, 4:22 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

The Effect of tDCS on Subcortical Brain Functioning

NCT01602276
View directory record Official record
Conditions
Brain Damage, Chronic
Interventions
Transcranial Direct Current Stimulation (tDCS)
Procedure
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 79 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 19, 2018 · Synced Jun 10, 2026, 4:22 AM EDT