{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Sleep+Disorders%2C+Circadian+Rhythm&page=6",
    "query": {
      "condition": "Sleep Disorders, Circadian Rhythm",
      "page": 6
    },
    "page_size": 10
  },
  "pagination": {
    "page": 6,
    "page_size": 10,
    "total_count": 154,
    "total_pages": 16,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Sleep+Disorders%2C+Circadian+Rhythm&page=7&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Sleep+Disorders%2C+Circadian+Rhythm&page=5&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-13T03:52:15.334Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT04955431",
      "title": "Circadian Rhythm Disruption Effects on Smoke Inhalation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Inflammation",
        "Sleep Deprivation",
        "Circadian Rhythm Sleep Disorder, Shift Work Type",
        "Smoke Inhalation"
      ],
      "interventions": [
        {
          "name": "Sleep Restriction",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Normal Sleep",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Montana",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "44 Years",
        "sex": "MALE",
        "summary": "18 Years to 44 Years · Male only"
      },
      "enrollment_count": 10,
      "start_date": "2022-01-24",
      "completion_date": "2022-04-17",
      "has_results": true,
      "last_update_posted_date": "2025-05-30",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 1,
      "location_summary": "Missoula, Montana",
      "locations": [
        {
          "city": "Missoula",
          "state": "Montana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04955431"
    },
    {
      "nct_id": "NCT05965609",
      "title": "Optimizing Sleep Health in Nurses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Circadian Rhythm Sleep-Wake Disorders, Shift Work Type",
        "Sleep Initiation and Maintenance Disorders"
      ],
      "interventions": [
        {
          "name": "CBTI",
          "type": "BEHAVIORAL"
        },
        {
          "name": "MRTI",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Oregon State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2023-12-08",
      "completion_date": "2026-03-03",
      "has_results": false,
      "last_update_posted_date": "2026-04-06",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 1,
      "location_summary": "Corvallis, Oregon",
      "locations": [
        {
          "city": "Corvallis",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05965609"
    },
    {
      "nct_id": "NCT02954809",
      "title": "Feasibility of Bright Light Therapy on Fatigue, Sleep and Circadian Activity Rhythms in Lung Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fatigue",
        "Sleep Disturbance",
        "Circadian Dysregulation"
      ],
      "interventions": [
        {
          "name": "Morning bright light therapy",
          "type": "DEVICE"
        },
        {
          "name": "Dim light",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "State University of New York at Buffalo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2016-10",
      "completion_date": "2018-01",
      "has_results": true,
      "last_update_posted_date": "2025-05-01",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02954809"
    },
    {
      "nct_id": "NCT06336525",
      "title": "Adult Sleep Health in the Rural Appalachia and Mississippi Delta Region and Its Relationships With Cardiometabolic Health Disparities.",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sleep Apnea",
        "Insomnia",
        "Sleep Deprivation",
        "Sleep Disorders, Circadian Rhythm",
        "Sleepiness, Excessive Daytime",
        "Fatigue"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "25 Years to 65 Years"
      },
      "enrollment_count": 3680,
      "start_date": "2024-05-08",
      "completion_date": "2027-01-31",
      "has_results": false,
      "last_update_posted_date": "2025-10-27",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06336525"
    },
    {
      "nct_id": "NCT00207285",
      "title": "Sleep Disorders Management, Health and Safety in Police",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disorders",
        "Sleep Apnea, Obstructive",
        "Restless Legs Syndrome",
        "Sleep Disorders, Circadian Rhythm",
        "Sleep Initiation and Maintenance Disorders"
      ],
      "interventions": [
        {
          "name": "Sleep Hygiene Education",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Screening and Treatment of Sleep Disorders",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "PROCEDURE"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 731,
      "start_date": "2005-05",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2016-03-17",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00207285"
    },
    {
      "nct_id": "NCT06505447",
      "title": "PICU-related Sleep and Circadian Dysregulation Pilot Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Circadian Dysrhythmia",
        "Sleep Disturbance",
        "Critical Illness",
        "Children, Only"
      ],
      "interventions": [
        {
          "name": "Daytime light exposure",
          "type": "OTHER"
        },
        {
          "name": "Daytime restricted feeding",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "State University of New York at Buffalo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "6 Years",
        "sex": "ALL",
        "summary": "3 Years to 6 Years"
      },
      "enrollment_count": 30,
      "start_date": "2024-12-06",
      "completion_date": "2027-01-01",
      "has_results": false,
      "last_update_posted_date": "2026-03-23",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06505447"
    },
    {
      "nct_id": "NCT03001557",
      "title": "Study of Lemborexant for Irregular Sleep-Wake Rhythm Disorder and Mild to Moderate Alzheimer's Disease Dementia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Irregular Sleep-Wake Rhythm Disorder"
      ],
      "interventions": [
        {
          "name": "Lemborexant 2.5 mg",
          "type": "DRUG"
        },
        {
          "name": "Lemborexant 5 mg",
          "type": "DRUG"
        },
        {
          "name": "Lemborexant 10 mg",
          "type": "DRUG"
        },
        {
          "name": "Lemborexant 15 mg",
          "type": "DRUG"
        },
        {
          "name": "Lemborexant-matched placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eisai Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "60 Years to 90 Years"
      },
      "enrollment_count": 63,
      "start_date": "2016-12-20",
      "completion_date": "2020-04-17",
      "has_results": true,
      "last_update_posted_date": "2021-05-17",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 37,
      "location_summary": "Little Rock, Arkansas • Rogers, Arkansas • Costa Mesa, California + 30 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Rogers",
          "state": "Arkansas"
        },
        {
          "city": "Costa Mesa",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03001557"
    },
    {
      "nct_id": "NCT02997319",
      "title": "Shift Work, Heredity, Insulin, and Food Timing Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Shift Work Type Circadian Rhythm Sleep Disorder",
        "Diabetes Mellitus, Type 2",
        "Circadian Rhythm Sleep Disorder, Shift Work Type",
        "Insulin Resistance"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 365,
      "start_date": "2017-02-24",
      "completion_date": "2021-05-08",
      "has_results": false,
      "last_update_posted_date": "2021-05-19",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02997319"
    },
    {
      "nct_id": "NCT04378933",
      "title": "Glasses for Adolescent Delayed Sleep-Wake Phase Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Delayed Sleep-Wake Phase Disorder"
      ],
      "interventions": [
        {
          "name": "Amber Glasses",
          "type": "DEVICE"
        },
        {
          "name": "Clear Lens Glasses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "14 Years to 17 Years"
      },
      "enrollment_count": 34,
      "start_date": "2019-02-27",
      "completion_date": "2022-06-03",
      "has_results": true,
      "last_update_posted_date": "2023-05-06",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 2,
      "location_summary": "Chicago, Illinois • Rochester, Minnesota",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04378933"
    },
    {
      "nct_id": "NCT01855126",
      "title": "Individually Tailored Lighting System to Improve Sleep in Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disturbances"
      ],
      "interventions": [
        {
          "name": "Blue light",
          "type": "OTHER"
        },
        {
          "name": "Red light",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rensselaer Polytechnic Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2013-03",
      "completion_date": "2017-04",
      "has_results": true,
      "last_update_posted_date": "2019-01-29",
      "last_synced_at": "2026-10-13T03:52:15.334Z",
      "location_count": 1,
      "location_summary": "Troy, New York",
      "locations": [
        {
          "city": "Troy",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01855126"
    }
  ]
}