{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Circadian+Rhythm+Sleep+Disorder&page=2",
    "query": {
      "condition": "Circadian Rhythm Sleep Disorder",
      "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&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-06-11T09:30:01.683Z",
  "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": "NCT01557595",
      "title": "Blue Wavelength Light-blocking Glasses in ADHD-Insomnia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Attention Deficit Hyperactivity Disorder",
        "Delayed Sleep Phase Type Circadian Rhythm Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "Polarized glasses designed to filter out blue light",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 22,
      "start_date": "2011-09",
      "completion_date": "2012-06",
      "has_results": true,
      "last_update_posted_date": "2017-12-13",
      "last_synced_at": "2026-06-11T09:30:01.683Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01557595"
    },
    {
      "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": "2026-06-11T09:30:01.683Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03980340"
    },
    {
      "nct_id": "NCT05463861",
      "title": "Lemborexant in Delayed Sleep Phase Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Delayed Sleep Phase Syndrome"
      ],
      "interventions": [
        {
          "name": "Lemborexant",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 71,
      "start_date": "2022-02-01",
      "completion_date": "2026-01-21",
      "has_results": false,
      "last_update_posted_date": "2026-03-02",
      "last_synced_at": "2026-06-11T09:30:01.683Z",
      "location_count": 1,
      "location_summary": "Redwood City, California",
      "locations": [
        {
          "city": "Redwood City",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05463861"
    },
    {
      "nct_id": "NCT05074277",
      "title": "Skeletal Response to Simulated Night Shift",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoporosis",
        "Circadian Rhythm Sleep Disorder, Shift Work Type"
      ],
      "interventions": [
        {
          "name": "Simulated short term night shift work schedule",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "20 Years to 40 Years"
      },
      "enrollment_count": 20,
      "start_date": "2022-02-08",
      "completion_date": "2025-12-18",
      "has_results": false,
      "last_update_posted_date": "2025-12-22",
      "last_synced_at": "2026-06-11T09:30:01.683Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05074277"
    },
    {
      "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": "2026-06-11T09:30:01.683Z",
      "location_count": 1,
      "location_summary": "Berkeley, California",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03556878"
    },
    {
      "nct_id": "NCT04087603",
      "title": "Teen Sleep Health Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disorders, Circadian Rhythm",
        "Adolescent Behavior"
      ],
      "interventions": [
        {
          "name": "Weekend Morning Bright Light & Early Bedtime",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rush University Medical Center",
      "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": 52,
      "start_date": "2017-01-05",
      "completion_date": "2019-05-12",
      "has_results": false,
      "last_update_posted_date": "2019-09-19",
      "last_synced_at": "2026-06-11T09:30:01.683Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04087603"
    },
    {
      "nct_id": "NCT01430754",
      "title": "Withdrawal Study to Demonstrate the Maintenance Effect in the Treatment of Non-24-Hour Sleep-Wake Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Non-24-Hour Sleep-Wake Disorder"
      ],
      "interventions": [
        {
          "name": "tasimelteon",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanda Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 20,
      "start_date": "2011-09",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2014-10-10",
      "last_synced_at": "2026-06-11T09:30:01.683Z",
      "location_count": 22,
      "location_summary": "Phoenix, Arizona • Orange, California • Palo Alto, California + 19 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01430754"
    },
    {
      "nct_id": "NCT00230737",
      "title": "Effects of Melatonin on Insomnia Symptoms in Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Sleep Initiation and Maintenance Disorders"
      ],
      "interventions": [
        {
          "name": "Melatonin 0.4 mg",
          "type": "DRUG"
        },
        {
          "name": "Melatonin 4.0 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Nalaka Gooneratne",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 27,
      "start_date": "2004-10",
      "completion_date": "2008-05",
      "has_results": true,
      "last_update_posted_date": "2017-03-08",
      "last_synced_at": "2026-06-11T09:30:01.683Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00230737"
    },
    {
      "nct_id": "NCT05551325",
      "title": "Reestablishing Sleep and Circadian Alignment in Medical Intensive Care Unit (MICU) Patients Via a Mechanistic RCT of an Sleep Chronobundle",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Critical Illness",
        "Sleep Deprivation",
        "Circadian Rhythm Sleep Disorder, Unspecified"
      ],
      "interventions": [
        {
          "name": "Chronobundle - light",
          "type": "OTHER"
        },
        {
          "name": "chronobundle - feeding",
          "type": "OTHER"
        },
        {
          "name": "chronobundle - mobility",
          "type": "OTHER"
        },
        {
          "name": "chronobundle - sleep",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 160,
      "start_date": "2024-05-13",
      "completion_date": "2029-06-29",
      "has_results": false,
      "last_update_posted_date": "2026-05-20",
      "last_synced_at": "2026-06-11T09:30:01.683Z",
      "location_count": 2,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05551325"
    },
    {
      "nct_id": "NCT01163032",
      "title": "Efficacy and Safety of Tasimelteon Compared With Placebo in Totally Blind Subjects With Non-24-Hour Sleep-Wake Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Non-24-Hour Sleep-Wake Disorder"
      ],
      "interventions": [
        {
          "name": "tasimelteon",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanda Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 136,
      "start_date": "2010-08",
      "completion_date": "2012-11",
      "has_results": true,
      "last_update_posted_date": "2014-10-16",
      "last_synced_at": "2026-06-11T09:30:01.683Z",
      "location_count": 23,
      "location_summary": "Phoenix, Arizona • Orange, California • Palo Alto, California + 20 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01163032"
    }
  ]
}