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ClinicalTrials.gov public records Last synced May 21, 2026, 7:59 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Circadian Rhythm Disorders Clear all
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Sleep Apnea Syndromes, Insomnia, Insufficient Sleep Syndrome, Circadian Rhythm Disorders
Interventions
Not listed
Lead sponsor
Dayzz Live Well Ltd.
Industry
Eligibility
21 Years to 65 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 21, 2020 · Synced May 21, 2026, 7:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Seasonal Affective Disorder
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1995 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 21, 2026, 7:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Sleep, Circadian Dysregulation, Mood
Interventions
Light
Device
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
18 Years to 35 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 29, 2021 · Synced May 21, 2026, 7:59 PM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Shift-Work Sleep Disorder
Interventions
Sleep Enhancement Training System, NIOSH shiftwork booklet
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 22, 2010 · Synced May 21, 2026, 7:59 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Circadian Rhythm, Cardiometabolic Health, Weight Loss, Cardiovascular Health, Time Restricted Feeding
Interventions
Circadian Based Time Restricted Eating
Behavioral
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 40 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 2, 2024 · Synced May 21, 2026, 7:59 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Sleep Disorder, Shift-Work
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
20 Years to 60 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2020 · Synced May 21, 2026, 7:59 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Obesity, Abdominal, Feeding Patterns
Interventions
Continuous Feeding, Intermittent feeding
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2030
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced May 21, 2026, 7:59 PM EDT
Completed Phase 4 Interventional
View directory record Official record
Conditions
Delayed Sleep Phase Syndrome
Interventions
Lemborexant, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced May 21, 2026, 7:59 PM EDT
Recruiting Phase 3 Interventional
View directory record Official record
Conditions
Excessive Sleepiness, Shift-work Disorder
Interventions
Solriamfetol 150 mg, Solriamfetol 300 mg, Placebo
Drug
Lead sponsor
Axsome Therapeutics, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
520 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
38
States / cities
Cullman, Alabama • Chandler, Arizona • Tucson, Arizona + 32 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced May 21, 2026, 7:59 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Critical Illness, Sleep Deprivation, Respiratory Failure, Sleep Disorders, Circadian Rhythm
Interventions
Sleep and circadian rhythm promotion, Usual care
Behavioral
Lead sponsor
Brian Gehlbach
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
2
States / cities
Chicago, Illinois • Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 6, 2018 · Synced May 21, 2026, 7:59 PM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Shift Work Schedule, Circadian Rhythm, Insulin Resistance, Circadian Misalignment
Interventions
Metyrapone And Hydrocortisone, Dextrose, insulin
Drug
Lead sponsor
Washington State University
Other
Eligibility
18 Years to 45 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Spokane, Washington
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced May 21, 2026, 7:59 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Traumatic Brain Injury, Fatigue
Interventions
Bright White Light (BWL), Dim Red Light (DRL)
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 6, 2019 · Synced May 21, 2026, 7:59 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Mild Cognitive Impairment, Alzheimer Disease, Alzheimer's Disease
Interventions
Time-restricted eating
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
60 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced May 21, 2026, 7:59 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Respiratory Failure, Critical Illness
Interventions
Environmental modification
Behavioral
Lead sponsor
University of Iowa
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2008
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 25, 2017 · Synced May 21, 2026, 7:59 PM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Circadian Rhythm Sleep Disorders, Non-24 Hour Sleep-Wake Disorder, Autism Spectrum Disorder, Smith-Magenis Syndrome
Interventions
tasimelteon
Drug
Lead sponsor
Vanda Pharmaceuticals
Industry
Eligibility
3 Years to 17 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 20, 2024 · Synced May 21, 2026, 7:59 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Critical Illness, Sleep Deprivation, Circadian Rhythm Sleep Disorder, Unspecified
Interventions
Chronobundle - light, chronobundle - feeding, chronobundle - mobility, chronobundle - sleep
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
2
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced May 21, 2026, 7:59 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
GDM, Physical Activity, Hyperglycemia, Glucose Intolerance, Circadian Rhythm, Exercise
Interventions
Moderate intensity walking or stepping
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced May 21, 2026, 7:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Sleep Disturbances, Depression
Interventions
Tailored Active intervention, Inactive intervention
Other
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
65 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
2
States / cities
Albany, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 3, 2024 · Synced May 21, 2026, 7:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Sleep Disorders
Interventions
Bright light box
Device
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 7, 2016 · Synced May 21, 2026, 7:59 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Circadian Rhythm Sleep Disorder of Shift Work Type, Metabolic Disease, Insulin Sensitivity
Interventions
Time-restricted feeding, Circadian Misalignment
Behavioral
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 35 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced May 21, 2026, 7:59 PM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Sleep-wake Disorder in Blind Individuals
Interventions
Data collection on blindness and sleep problems
Other
Lead sponsor
Vanda Pharmaceuticals
Industry
Eligibility
Not listed
Enrollment
10,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2030
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jun 23, 2020 · Synced May 21, 2026, 7:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Shift Work Sleep Disorder
Interventions
Not listed
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 30, 2010 · Synced May 21, 2026, 7:59 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Delayed Sleep Phase Syndrome
Interventions
Lemborexant, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 23, 2025 · Synced May 21, 2026, 7:59 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Sleep Disorder, Circadian Dysregulation
Interventions
Standard Transdiagnostic Intervention for Sleep and Circadian Dysfunction (TranS-C), Adapted Transdiagnostic Intervention for Sleep and Circadian Dysfunction (TranS-C), Usual Care Delayed Treatment
Behavioral · Other
Lead sponsor
University of California, Berkeley
Other
Eligibility
18 Years and older
Enrollment
489 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
10
States / cities
Concord, California • Fairfield, California • Goleta, California + 7 more
Source: ClinicalTrials.gov public record
Updated Oct 26, 2025 · Synced May 21, 2026, 7:59 PM EDT