Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Jul 21, 2026, 11:19 AM EDT

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

Showing 1–24 of 358 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Circadian Clear all
Completed Not applicable Interventional

Implementing and Sustaining a Transdiagnostic Sleep and Circadian Treatment

NCT03556878
View directory record Official record
Conditions
Sleep Disorders, Circadian Rhythm, Sleep Disorder, Acceptability, Feasibility, Adaptation, Implementation Research
Interventions
Fitted Transdiagnostic Sleep and Circadian intervention
Behavioral
Lead sponsor
University of California, Berkeley
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Apr 21, 2019 · Synced Jul 21, 2026, 11:19 AM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

Sleep Loss and Circadian Misalignment - Mechanisms of Insulin Resistance

NCT07494084
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 Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional

Use of Consumer Sleep Technology to Treat Shift Work Disorder

NCT05186233
View directory record Official record
Conditions
Shift-work Disorder
Interventions
Phototherapy
Behavioral
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Novi, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 7, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

TREAD: Time Restricted Eating Intervention for Alzheimer's Disease

NCT06548191
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 – 2027
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated May 25, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

Morning Light Treatment for Traumatic Stress: The Role of Amygdala Reactivity

NCT04117347
View directory record Official record
Conditions
Stress
Interventions
Light therapy A via the Re-Timer®, Light therapy B via the Re-Timer®, Light therapy C via the Re-Timer®
Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 60 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 26, 2024 · Synced Jul 21, 2026, 11:19 AM EDT
Completed No phase listed Observational

Study to Explore Natural Daily Variation and Impact of Stress in HIV Levels

NCT02895087
View directory record Official record
Conditions
HIV
Interventions
Diurnal Variation Group, External Stress Group
Other
Lead sponsor
University of Melbourne
Other
Eligibility
25 Years to 55 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
2
States / cities
San Francisco, California • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

Programmed Environmental Illumination (PEI) of Hospital Rooms to Prevent/Reduce Cancer-Related Fatigue

NCT03198754
View directory record Official record
Conditions
Cancer-related Problem/Condition, Depression, Circadian Rhythm Disorders
Interventions
PEI Experimental Light, Comparison Light
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
21 Years and older
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 10, 2020 · Synced Jul 21, 2026, 11:19 AM EDT
Recruiting Not applicable Interventional

Evaluation of Cognitive Behavioral Therapy for Insomnia (CBT-I) in Individuals With Mild Traumatic Brain Injury (mTBI)

NCT07385105
View directory record Official record
Conditions
Sleep Architecture, Mild Traumatic Brain Injury, Sleep, Sleep and Circadian Problems
Interventions
Cognitive behavioral Therapy for insomnia (CBT-I)
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 60 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sleep Disruption Induced Impairments in Bone Formation

NCT03733483
View directory record Official record
Conditions
Healthy
Interventions
Sleep Deprivation
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
20 Years to 65 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 11, 2021 · Synced Jul 21, 2026, 11:19 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Does Circadian Misalignment Have Sex-Specific Effects on Metabolism?

NCT07441265
View directory record Official record
Conditions
Circadian Misalignment, Sex Differences
Interventions
Day shift, Night shift
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 40 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

Feasibility of Bright Light Therapy on Fatigue, Sleep and Circadian Activity Rhythms in Lung Cancer Survivors

NCT02954809
View directory record Official record
Conditions
Fatigue, Sleep Disturbance, Circadian Dysregulation
Interventions
Morning bright light therapy, Dim light
Device
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

Actigraphic Analysis of Treatment Response

NCT00723580
View directory record Official record
Conditions
Sleep Disorders, Circadian Rhythm, Insomnia, Psychomotor Agitation
Interventions
risperidone
Drug
Lead sponsor
Child Psychopharmacology Institute
Other
Eligibility
2 Years to 10 Years · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Aug 17, 2015 · Synced Jul 21, 2026, 11:19 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Bright Light as a Countermeasure for Circadian Desynchrony

NCT01119365
View directory record Official record
Conditions
Healthy
Interventions
Bright light
Other
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
18 Years to 35 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2023
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

Sleep and Circadian Rhythms in Mechanically Ventilated Patients

NCT01276652
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 Jul 21, 2026, 11:19 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Circadian Rhythms of Aqueous Humor Dynamics in Humans

NCT00572936
View directory record Official record
Conditions
Glaucoma
Interventions
Latanoprost, Dorzolamide, Timolol
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 23, 2023 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

Zolpidem CR and Hospitalized Patients With Dementia

NCT00814502
View directory record Official record
Conditions
Dementia, Alzheimer Disease, Dementia, Vascular, Sleep Disorders, Circadian Dysregulation
Interventions
Zolpidem CR, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
60 Years to 99 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 21, 2017 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional

Fatigue Management in HIV

NCT02126007
View directory record Official record
Conditions
Fatigue
Interventions
Sleep and Rhythm Intervention, Dietary Modifications
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
50 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 1, 2016 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

Circadian Effects of Escitalopram

NCT01214044
View directory record Official record
Conditions
Depression
Interventions
placebo/escitalopram
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 65 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 19, 2019 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Short, Simple, Exercise to Improve Circadian Dependent Postprandial Glycemic Responses

NCT05783752
View directory record Official record
Conditions
Postprandial Glycemic Response, Postprandial Hyperglycemia, Postprandial Insulin
Interventions
Stair Stepping, No exercise control
Behavioral
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jul 13, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Not yet recruiting Not applicable Interventional

Impact of Short and Mistimed Sleep on Adolescents With ADHD: The Adolescent Attention and Circadian Timing Study

NCT07684417
View directory record Official record
Conditions
ADHD
Interventions
Aligned sleep extension, Misaligned sleep extension
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
13 Years to 17 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Cannabis Effects on Sleep, Circadian Rhythms, and Light Sensitivity in Young Adults

NCT06743373
View directory record Official record
Conditions
Cannabis Use, Sleep, Circadian Rhythm
Interventions
Cannabis Discontinuation
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 25 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety and Efficacy of Ramelteon in Healthy Subjects

NCT00671190
View directory record Official record
Conditions
Sleep Disorder
Interventions
Ramelteon, Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 45 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
13
States / cities
Hot Springs, Arkansas • Los Angeles, California • San Diego, California + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2012 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Stress, Salt Excretion, and Nighttime Blood Pressure

NCT03636490
View directory record Official record
Conditions
Blood Pressure, Psychological Stress
Interventions
Psychological Stress Intervention
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
21 Years and older
Enrollment
323 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 10, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Recruiting Phase 4 Interventional

Light Flashes to Treat Delayed Sleep Phase Disorder (DSPD)

NCT01406691
View directory record Official record
Conditions
Delayed Sleep Phase Disorder
Interventions
Flashes
Device
Lead sponsor
Stanford University
Other
Eligibility
15 Years to 19 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2028
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 23, 2023 · Synced Jul 21, 2026, 11:19 AM EDT