{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Circadian+Rhythm+Sleep+Disorder%2C+Unspecified&page=2",
    "query": {
      "condition": "Circadian Rhythm Sleep Disorder, Unspecified",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Circadian+Rhythm+Sleep+Disorder%2C+Unspecified&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T09:11:20.282Z",
  "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": "NCT00506259",
      "title": "Treatment Strategies for Children With Smith-Magenis Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Developmental Delay Disorders",
        "Chromosome Deletion",
        "Mental Retardation",
        "Sleep Disorders, Circadian Rhythm",
        "Self Injurious Behavior"
      ],
      "interventions": [
        {
          "name": "dTR Melatonin (NIH CC PDS)",
          "type": "DRUG"
        },
        {
          "name": "Phototherapy (Bright Light)",
          "type": "DEVICE"
        },
        {
          "name": "Melatonin CR",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "National Human Genome Research Institute (NHGRI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "3 Years to 45 Years"
      },
      "enrollment_count": 23,
      "start_date": "2007-07-17",
      "completion_date": "2018-05-22",
      "has_results": false,
      "last_update_posted_date": "2019-12-12",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00506259"
    },
    {
      "nct_id": "NCT05091021",
      "title": "Skeletal Effects of Chronic Night Shift",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Osteoporosis",
        "Circadian Rhythm Sleep Disorder, Shift Work Type"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "20 Years to 50 Years"
      },
      "enrollment_count": 59,
      "start_date": "2021-10-27",
      "completion_date": "2026-02-19",
      "has_results": false,
      "last_update_posted_date": "2026-05-15",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05091021"
    },
    {
      "nct_id": "NCT00078312",
      "title": "Armodafinil (CEP-10953) for Treatment of Narcolepsy, Obstructive Sleep Apnea/Hypopnea Syndrome, or Chronic Shift Work Sleep Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Narcolepsy",
        "Sleep Apnea, Obstructive",
        "Sleep Apnea Syndromes",
        "Shift-Work Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "CEP-10953 (Armodafinil)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cephalon",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 328,
      "start_date": "2004-01",
      "completion_date": "2006-07",
      "has_results": true,
      "last_update_posted_date": "2013-07-19",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 41,
      "location_summary": "Peoria, Arizona • Phoenix, Arizona • Tucson, Arizona + 35 more",
      "locations": [
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00078312"
    },
    {
      "nct_id": "NCT03556878",
      "title": "Implementing and Sustaining a Transdiagnostic Sleep and Circadian Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disorders, Circadian Rhythm",
        "Sleep Disorder",
        "Acceptability",
        "Feasibility",
        "Adaptation",
        "Implementation Research"
      ],
      "interventions": [
        {
          "name": "Fitted Transdiagnostic Sleep and Circadian intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Berkeley",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 21,
      "start_date": "2018-07-20",
      "completion_date": "2018-12-01",
      "has_results": false,
      "last_update_posted_date": "2019-04-22",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "Berkeley, California",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03556878"
    },
    {
      "nct_id": "NCT03998358",
      "title": "Characterization of Fatigue in Military Personnel With Traumatic Brain Injuries",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Traumatic Brain Injury",
        "Neurobehavioral Manifestation",
        "Sleep Disorder",
        "Fatigue"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Nursing Research (NINR)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "25 Years to 40 Years"
      },
      "enrollment_count": 0,
      "start_date": "2021-03-19",
      "completion_date": "2021-03-19",
      "has_results": false,
      "last_update_posted_date": "2021-03-25",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03998358"
    },
    {
      "nct_id": "NCT03980340",
      "title": "Breath Biomarkers for Sleep Loss and Circadian Timing",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Shift-Work Sleep Disorder",
        "Shift Work Type Circadian Rhythm Sleep Disorder",
        "Sleep Disorders, Circadian Rhythm",
        "Sleep Disorders, Intrinsic",
        "Advanced Sleep Phase Syndrome (ASPS)",
        "Advanced Sleep Phase Syndrome",
        "Advanced Sleep Phase",
        "Delayed Sleep Phase",
        "Delayed Sleep Phase Syndrome",
        "Non-24 Hour Sleep-Wake Disorder",
        "Irregular Sleep-Wake Syndrome"
      ],
      "interventions": [
        {
          "name": "Short Nap Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "No Nap Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 5,
      "start_date": "2021-01-28",
      "completion_date": "2025-03-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-03",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03980340"
    },
    {
      "nct_id": "NCT03879044",
      "title": "Transcranial Direct Current Stimulation Therapy for Sleepiness Related to Shift Work Disorder (tDCS-SWORD)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Shift-Work Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "Transcranial Direct Current Stimulation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 30,
      "start_date": "2019-03-20",
      "completion_date": "2020-06-20",
      "has_results": true,
      "last_update_posted_date": "2021-10-25",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03879044"
    },
    {
      "nct_id": "NCT03568045",
      "title": "Feasibility Pilot of Bright Light in the Intensive Care Unit",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Circadian Rhythm Sleep Disorder, Unspecified"
      ],
      "interventions": [
        {
          "name": "standard light",
          "type": "DEVICE"
        },
        {
          "name": "10,000 lux bright light, 4 hours",
          "type": "DEVICE"
        },
        {
          "name": "10,000 lux bright light, 8 hours",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2018-12-03",
      "completion_date": "2024-03-31",
      "has_results": true,
      "last_update_posted_date": "2024-06-17",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03568045"
    },
    {
      "nct_id": "NCT04690504",
      "title": "Validation of Circadian Biomarkers in Patients With Sleep Disorders",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sleep Disorders, Circadian Rhythm",
        "Circadian Rhythm Disorders",
        "Circadian Rhythm Sleep Disorder",
        "Advanced Sleep Phase Syndrome (ASPS)",
        "Delayed Sleep Phase Syndrome",
        "Sleep Wake Disorders",
        "Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "dim light melatonin onset (DLMO)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 50,
      "start_date": "2021-11-02",
      "completion_date": "2024-07-01",
      "has_results": false,
      "last_update_posted_date": "2024-08-06",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04690504"
    },
    {
      "nct_id": "NCT03813654",
      "title": "Sleep and Circadian Treatments for Shift Workers",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Shift-Work Sleep Disorder",
        "Shift-Work Related Sleep Disturbance"
      ],
      "interventions": [
        {
          "name": "8-h Afternoon-Evening Sleep",
          "type": "BEHAVIORAL"
        },
        {
          "name": "8-h Free Sleep",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "50 Years to 65 Years"
      },
      "enrollment_count": 33,
      "start_date": "2020-08-20",
      "completion_date": "2023-12-31",
      "has_results": true,
      "last_update_posted_date": "2025-08-15",
      "last_synced_at": "2026-05-22T09:11:20.282Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03813654"
    }
  ]
}