Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 4, 2026, 1:00 PM EDT

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Showing 1–24 of 1,874 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Sepsis, Cognitive Impairment
Interventions
Not listed
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Salt Lake City, Utah
Completed Not applicable Interventional Results available

Lidocaine For Neuroprotection During Cardiac Surgery

NCT00938964
Conditions
Cognitive Decline
Interventions
Lidocaine, Placebo
Drug
Lead sponsor
Duke University
Other
Eligibility
50 Years and older
Enrollment
550 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
2
States / cities
Durham, North Carolina • Norfolk, Virginia
Conditions
Down Syndrome, Cognitive Dysfunction
Interventions
Aricept (donepezil hydrochloride), Placebo
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
11 Years to 17 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
2
States / cities
San Antonio, Texas • Herndon, Virginia
Conditions
Mild Cognitive Impairment, Amnestic Mild Cognitive Disorder, Amnestic Mild Cognitive Impairment, Mild Traumatic Brain Injury, Concussion, Brain
Interventions
High Definition Transcranial Direct Current Stimulation
Device
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
55 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Dallas, Texas
Conditions
Epilepsy
Interventions
transcranial direct current stimulation, Cognitive Remediation Therapy
Device · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 64 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Saint Louis Park, Minnesota
Completed No phase listed Observational Accepts healthy volunteers

Cognitive Effects of Anesthesia on Children

NCT02005185
Conditions
Procedures Requiring Anesthesia
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
6 Years to 11 Years
Enrollment
162 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
3
States / cities
Davis, California • Oakland, California • San Francisco, California
Conditions
Mild Cognitive Impairment
Interventions
Active frontal, Active parietal, Sham
Device
Lead sponsor
The University of Texas at Dallas
Other
Eligibility
40 Years to 90 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Richardson, Texas
Conditions
Alzheimer Disease, Mild Cognitive Impairment, Long-Term Care Planning
Interventions
PlanYourLifespan.org
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
55 Years and older
Enrollment
293 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Ovarian Cancer, Endometrial Cancer, Cervical Cancers, Vulvar Cancers, Uterine Cancer, Cervix Cancer, Ovary Cancer
Interventions
GYNCOG
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Completed Phase 1Phase 2 Interventional Results available

Senolytic Therapy to Modulate Progression of Alzheimer's Disease

NCT04063124
Conditions
Alzheimer Disease
Interventions
Dasatinib + Quercetin
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
65 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
San Antonio, Texas
Conditions
Parkinson Disease, Mild Cognitive Impairment
Interventions
Strategy Training (Time- and Event- Based)
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
50 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Corona Virus Infection, Cognitive Dysfunction
Interventions
Cognitive Training
Behavioral
Lead sponsor
Nova Southeastern University
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Conditions
Cognitive Impairment Associated With Schizophrenia
Interventions
Nicotine patch, MK-4334, Placebo patch, Placebo capsule
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
2
States / cities
Long Beach, California • Marlton, New Jersey
Conditions
Alzheimer Disease, Mild Cognitive Impairment
Interventions
Optical Coherence Tomography
Diagnostic Test
Lead sponsor
University of California, Davis
Other
Eligibility
50 Years to 89 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Sacramento, California
Conditions
Parkinson's Disease, Mild Cognitive Impairment, Dementia
Interventions
Bilateral GPi DBS, Bilateral STN DBS
Device
Lead sponsor
St. Joseph's Hospital and Medical Center, Phoenix
Other
Eligibility
21 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Phoenix, Arizona
Conditions
Memory Impairment Due to Corticosteroid Use, Hypomania Due to Corticosteroid Use, Hippocampal Atrophy Due to Corticosteroid
Interventions
Lamotrigine (Drug)
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Timeline
2002 – 2005
U.S. locations
1
States / cities
Dallas, Texas
Conditions
Cognitive Impairment, no Dementia (CIND)
Interventions
Aerobic Exercise, DASH diet, Health education control
Behavioral · Other
Lead sponsor
Duke University
Other
Eligibility
55 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Completed Not applicable Interventional Accepts healthy volunteers

Long-term Effects of Blueberry Supplementation on Brain Health in Older Adults

NCT05764824
Conditions
Cognitive Decline, Nutrition, Healthy, Brain Injuries
Interventions
Blueberry powder, Controlled and matched powder
Dietary Supplement · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
65 Years to 99 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Major Depression, Late Life Depression (LLD)
Interventions
Not listed
Lead sponsor
University of Southern California
Other
Eligibility
65 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
2
States / cities
San Francisco, California • Pittsburgh, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Large Randomized Trial of Vitamin D, Omega-3 Fatty Acids and Cognitive Decline

NCT01669915
Conditions
Cognitive Decline
Interventions
vitamin D3, omega-3 fatty acids (fish oil), Vitamin D3 placebo, Fish oil placebo
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
60 Years to 92 Years
Enrollment
3,424 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Alzheimer's Disease
Interventions
Computer-based Cognitive Training
Procedure
Lead sponsor
Posit Science Corporation
Industry
Eligibility
60 Years to 90 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
San Francisco, California
Conditions
Schizophrenia, Impaired Cognition
Interventions
EVP-6124
Drug
Lead sponsor
FORUM Pharmaceuticals Inc
Industry
Eligibility
18 Years to 50 Years
Enrollment
830 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
69
States / cities
Little Rock, Arkansas • Anaheim, California • Bellflower, California + 66 more
Conditions
Alzheimer Disease
Interventions
Empagliflozin, Insulin, Insulin Placebo, Empagliflozin Placebo
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
55 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

TAK-071 Scopolamine-Induced Cognitive Impairment Study

NCT02918266
Conditions
Healthy Volunteers
Interventions
Scopolamine, TAK-071, Donepezil, Scopolamine Placebo, TAK-071 Placebo, Donepezil Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Glendale, California