Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 22, 2026, 5:10 AM EDT

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Showing 1–24 of 1,856 matching trials from the live ClinicalTrials.gov search.
Conditions
Parkinson Disease, Parkinson Disease Dementia
Interventions
Tributyrin, Placebo
Drug
Lead sponsor
Prabesh Kanel
Other
Eligibility
45 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Ann Arbor, Michigan
Conditions
Schizophrenia
Interventions
Plasticity-based Cognitive Training, Non-plasticity-based Training
Other
Lead sponsor
Posit Science Corporation
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
2
States / cities
Palo Alto, California • San Francisco, California
Conditions
MELAS Syndrome, Lebers Hereditory Optic Neuropathy With Extra Ocular Symptoms (LHON-Plus)
Interventions
Glycerol Tributyrate
Drug
Lead sponsor
George Washington University
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2028
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Recruiting Not applicable Interventional Accepts healthy volunteers

Exercise Adherence and Cognitive Decline: Phase 2

NCT07127965
Conditions
Cognitive Decline
Interventions
Goal Setting and Exercise Intensity Intervention
Behavioral
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
45 Years to 65 Years
Enrollment
226 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
2
States / cities
Aurora, Colorado • Boulder, Colorado
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Preventing Alzheimer's With Cognitive Training

NCT03848312
Conditions
Age-related Cognitive Decline, Alzheimer's Disease and Related Dementias
Interventions
Cognitive Training, Computerized Cognitive Stimulation
Behavioral
Lead sponsor
University of South Florida
Other
Eligibility
65 Years and older
Enrollment
7,600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2028
U.S. locations
7
States / cities
Gainesville, Florida • Jacksonville, Florida • Sarasota, Florida + 3 more
Conditions
Mild Cognitive Impairment, Mild Dementia, Alzheimer's Disease
Interventions
SAGE-718, SAGE-718-matching Placebo
Drug
Lead sponsor
Supernus Pharmaceuticals, Inc.
Industry
Eligibility
50 Years to 80 Years
Enrollment
174 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
37
States / cities
Gilbert, Arizona • Phoenix, Arizona • Lafayette, California + 34 more
Conditions
Alzheimer Disease, Memory Disorders, Dementia
Interventions
Participation in a monitored exercise program, Personalized aerobic and strength training.
Behavioral
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
65 Years to 89 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Salt Lake City, Utah
Conditions
Dementia, Alzheimer Type
Interventions
Xanamem™, Placebo (for Xanamem™)
Drug
Lead sponsor
Actinogen Medical
Industry
Eligibility
50 Years and older
Enrollment
185 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
14
States / cities
Tucson, Arizona • Los Angeles, California • Poway, California + 11 more
Conditions
Mild Cognitive Impairment
Interventions
External Counterpulsation (EECP)
Device
Lead sponsor
Patrick Moriarty, MD, FACP, FACC
Other
Eligibility
18 Years to 85 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Kansas City, Kansas
Conditions
Traumatic Brain Injury, Memory Deficits
Interventions
Donepezil, Placebo
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2024
U.S. locations
4
States / cities
Indianapolis, Indiana • Charlestown, Massachusetts • Elkins Park, Pennsylvania + 1 more
Completed No phase listed Observational Accepts healthy volunteers

Olfactory Deficits in Neurologic Disease

NCT05019014
Conditions
Alzheimer Disease, Traumatic Brain Injury, Amyotrophic Lateral Sclerosis, Frontotemporal Dementia, Lewy Body Disease, Mild Cognitive Impairment
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
201 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Mobility Limitation, Cognitive Impairment
Interventions
Neurorehabilitation of Standard Walking, Neurorehabilitation of Complex Walking, Sham Transcranial Direct Current Stimulation (Sham tDCS), Active Transcranial Direct Current Stimulation (Active tDCS)
Behavioral · Device
Lead sponsor
University of Florida
Other
Eligibility
65 Years to 110 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
3
States / cities
Gainesville, Florida
Conditions
PTSD
Interventions
Memantine, Placebo
Drug
Lead sponsor
Sriram Ramaswamy
Federal
Eligibility
19 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Omaha, Nebraska
Conditions
Aging, Mild Cognitive Impairment, Dementia, Old Age; Dementia, Cognitive Decline
Interventions
My Healthy Brain Version 2
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
60 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Cognitive Dysfunction, Alzheimer's Disease
Interventions
Aducanumab, Placebo
Drug
Lead sponsor
Biogen
Industry
Eligibility
50 Years to 85 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
22
States / cities
Phoenix, Arizona • Tucson, Arizona • Fullerton, California + 18 more
Conditions
Hypertension, Cognitive Decline
Interventions
Tai Chi
Behavioral
Lead sponsor
University of Connecticut
Other
Eligibility
55 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Storrs, Connecticut
Conditions
Neoplasm, Colorectal, Cognitive Impairment, Cognitive Dysfunction, Cognitive Change, Chemo-brain, Chemo Fog, Chemotherapy Effect, Cognitive Decline
Interventions
Not listed
Lead sponsor
Joseph McCollom
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2031
U.S. locations
1
States / cities
Fort Wayne, Indiana
Not listed Not applicable Interventional Accepts healthy volunteers

Multidisciplinary Intervention for Mild Cognitive Impairment

NCT02943187
Conditions
Mild Cognitive Impairment
Interventions
Cognitive training, Nutrition
Behavioral · Dietary Supplement
Lead sponsor
Gibson Institute of Cognitive Research
Industry
Eligibility
50 Years to 75 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Colorado Springs, Colorado
Conditions
Mild Cognitive Impairment
Interventions
VR cognitive training platform
Device
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Lexington, Kentucky
Completed Phase 3 Interventional Results available

Coenzyme Q10 Phase III Trial in Gulf War Illness

NCT02865460
Conditions
Gulf War Illness, Chronic Fatigue, Ubiquinol, Coenzyme Q10
Interventions
Ubiquinol, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
35 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
4
States / cities
Miami, Florida • Boston, Massachusetts • Minneapolis, Minnesota + 1 more
Conditions
Hypertension, Cognitive Decline
Interventions
Stepped-care protocol adapted from the SPRINT intensive-treatment algorithm
Behavioral
Lead sponsor
Tulane University
Other
Eligibility
40 Years and older
Enrollment
1,306 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
New Orleans, Louisiana
Completed Not applicable Interventional Results available

Indiana University Dementia Screening Trial

NCT01699503
Conditions
Dementia, Alzheimer's Disease, Mild Cognitive Impairment
Interventions
Collaborative Dementia Care Program
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
65 Years and older
Enrollment
4,005 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
3
States / cities
Indianapolis, Indiana • West Lafayette, Indiana
Conditions
Delirium
Interventions
Family Support System, HELP Support System
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
70 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Ann Arbor, Michigan
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

A Novel Computer-Based Functional Skills Assessment and Training Program

NCT04679441
Conditions
Mild Cognitive Impairment, Healthy Aging
Interventions
The Computerized Functional Skills Assessment and Training Program, Brain HQ Double Decision
Device
Lead sponsor
i-Function, Inc.
Industry
Eligibility
60 Years to 100 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Miami, Florida • New York, New York