{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Circadian+Clock+Control",
    "query": {
      "intervention": "Circadian Clock Control"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-11T21:07:17.593Z",
  "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": "NCT02202811",
      "title": "Circadian Rhythms and Cardiovascular Risk",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obstructive Sleep Apnea"
      ],
      "interventions": [
        {
          "name": "Forced Desynchrony",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 39,
      "start_date": "2014-08",
      "completion_date": "2020-03-09",
      "has_results": false,
      "last_update_posted_date": "2025-07-02",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02202811"
    },
    {
      "nct_id": "NCT07329283",
      "title": "Nighttime Synchrony of Your Nutrition and Circadian Health",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep",
        "Metabolism Changes",
        "Circadian Rhythm",
        "Lifestyle Factors",
        "Sleep Hygiene",
        "Sleep Hygiene, Inadequate",
        "Sleep Deprivation",
        "Insufficient Sleep",
        "Circadian Misalignment",
        "Circadian Dysregulation",
        "Light Exposure"
      ],
      "interventions": [
        {
          "name": "Central Clock Misalignment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Peripheral Misalignment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 120,
      "start_date": "2025-12-19",
      "completion_date": "2031-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-22",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07329283"
    },
    {
      "nct_id": "NCT04225442",
      "title": "The Physiological Chronobiome Modified by Age, Sex and Under Evoked Conditions",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy",
        "Healthy Aging"
      ],
      "interventions": [
        {
          "name": "Fatty meal to challenge the physiological chronobiome in healthy young and old",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 48,
      "start_date": "2020-01-05",
      "completion_date": "2028-06-04",
      "has_results": false,
      "last_update_posted_date": "2026-02-24",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04225442"
    },
    {
      "nct_id": "NCT04827446",
      "title": "Lighting Intervention for Cancer-related Fatigue",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer",
        "Prostate Cancer",
        "Hematologic Malignancy",
        "Survivorship",
        "Fatigue"
      ],
      "interventions": [
        {
          "name": "Wearable Sensor",
          "type": "OTHER"
        },
        {
          "name": "Blue-blocking glasses",
          "type": "OTHER"
        },
        {
          "name": "Clear glasses",
          "type": "OTHER"
        },
        {
          "name": "Full SYNC app",
          "type": "OTHER"
        },
        {
          "name": "\"Dummy\" SYNC app",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan Rogel Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 139,
      "start_date": "2021-07-15",
      "completion_date": "2023-03-09",
      "has_results": true,
      "last_update_posted_date": "2025-07-09",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04827446"
    },
    {
      "nct_id": "NCT05299723",
      "title": "The SleepWell Study - Chronotherapeutic Intervention to Improve Sleep Following ACS",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disturbance",
        "Insomnia",
        "Acute Coronary Syndrome"
      ],
      "interventions": [
        {
          "name": "BLT Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "BLB Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Sleep Hygiene Education",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2022-04-18",
      "completion_date": "2024-06-26",
      "has_results": true,
      "last_update_posted_date": "2025-01-07",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05299723"
    },
    {
      "nct_id": "NCT06809335",
      "title": "A Pilot of a Personalized Circadian mHealth to Improve Sleep in Night Shift Workers",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Shift Work Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "Personalized circadian mHealth",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2023-10-23",
      "completion_date": "2027-06",
      "has_results": false,
      "last_update_posted_date": "2026-03-02",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "Novi, Michigan",
      "locations": [
        {
          "city": "Novi",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06809335"
    },
    {
      "nct_id": "NCT00691574",
      "title": "Melatonin Levels in Smith Magenis Syndrome (SMS)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chromosome Disorders"
      ],
      "interventions": [
        {
          "name": "Melatonin",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Enviro-light artificial light box",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DEVICE"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "3 Years to 85 Years"
      },
      "enrollment_count": 5,
      "start_date": "1998-09",
      "completion_date": "2009-05",
      "has_results": true,
      "last_update_posted_date": "2019-11-27",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00691574"
    },
    {
      "nct_id": "NCT04242524",
      "title": "The Impact of Bariatric Surgery on Adipocyte Metabolism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Syndrome",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Circadian Clock Alignment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Circadian Clock Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 55 Years · Female only"
      },
      "enrollment_count": 28,
      "start_date": "2015-03-26",
      "completion_date": "2025-12-15",
      "has_results": false,
      "last_update_posted_date": "2026-02-13",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04242524"
    },
    {
      "nct_id": "NCT00492011",
      "title": "Efficacy of Ramelteon on Insomnia Symptoms Associated With Jet Lag in Healthy Adult Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Circadian Dysregulation"
      ],
      "interventions": [
        {
          "name": "Ramelteon",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Takeda",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 110,
      "start_date": "2007-02",
      "completion_date": "2007-08",
      "has_results": false,
      "last_update_posted_date": "2012-02-28",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 4,
      "location_summary": "Miami, Florida • Pembroke Pines, Florida • Honolulu, Hawaii + 1 more",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Pembroke Pines",
          "state": "Florida"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00492011"
    },
    {
      "nct_id": "NCT04753190",
      "title": "Light Timing Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronobiology",
        "Light",
        "Sleep",
        "Circadian Rhythm",
        "Adolescence"
      ],
      "interventions": [
        {
          "name": "Baseline Sleep Satiation and Phase Stabilization",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Gradually Shifted Sleep",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rush University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "18 Years to 20 Years"
      },
      "enrollment_count": 84,
      "start_date": "2022-08-22",
      "completion_date": "2025-05-18",
      "has_results": false,
      "last_update_posted_date": "2026-06-24",
      "last_synced_at": "2026-09-11T21:07:17.593Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04753190"
    }
  ]
}