{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Study&page=11",
    "query": {
      "intervention": "Observational Study",
      "page": 11
    },
    "page_size": 10
  },
  "pagination": {
    "page": 11,
    "page_size": 10,
    "total_count": 4385,
    "total_pages": 439,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Study&page=12&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Study&page=10&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-19T17:50:41.099Z",
  "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": "NCT07316114",
      "title": "A Study to Describe the Real-world Effectiveness, Safety and Patterns of Use of Dupilumab in Patients With Chronic Spontaneous Urticaria",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Spontaneous Urticaria"
      ],
      "interventions": [
        {
          "name": "Dupilumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 1,
      "start_date": "2026-03-18",
      "completion_date": "2026-06-02",
      "has_results": false,
      "last_update_posted_date": "2026-07-31",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 1,
      "location_summary": "Wilmington, North Carolina",
      "locations": [
        {
          "city": "Wilmington",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07316114"
    },
    {
      "nct_id": "NCT03031847",
      "title": "Cardiac Resynchronization in the Elderly",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Cardiac Resynchronization Therapy Pacemaker",
          "type": "DEVICE"
        },
        {
          "name": "Cardiac Resynchronization Therapy Defibrillator",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Samir Saba",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "75 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "75 Years and older"
      },
      "enrollment_count": 102,
      "start_date": "2017-03-21",
      "completion_date": "2021-08-18",
      "has_results": true,
      "last_update_posted_date": "2023-12-07",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 6,
      "location_summary": "Durham, North Carolina • Columbus, Ohio • Erie, Pennsylvania + 2 more",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Erie",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03031847"
    },
    {
      "nct_id": "NCT06388109",
      "title": "Positive Peers Intervention Clinical Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "Positive Peers mobile app",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "MetroHealth Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "34 Years",
        "sex": "ALL",
        "summary": "13 Years to 34 Years"
      },
      "enrollment_count": 250,
      "start_date": "2024-06-03",
      "completion_date": "2027-11",
      "has_results": false,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 7,
      "location_summary": "Van Nuys, California • Newark, New Jersey • Cincinnati, Ohio + 4 more",
      "locations": [
        {
          "city": "Van Nuys",
          "state": "California"
        },
        {
          "city": "Newark",
          "state": "New Jersey"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06388109"
    },
    {
      "nct_id": "NCT05099952",
      "title": "Sleep and Circadian Rhythm Study in Head and Neck Cancer Patients",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Head and Neck Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Counseling",
          "type": "OTHER"
        },
        {
          "name": "Educational Intervention",
          "type": "OTHER"
        },
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        },
        {
          "name": "Medical Device Usage and Evaluation",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Roswell Park Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2021-12-15",
      "completion_date": "2026-12-15",
      "has_results": false,
      "last_update_posted_date": "2022-01-12",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05099952"
    },
    {
      "nct_id": "NCT02061748",
      "title": "The Comparative Safety and Effectiveness of Warfarin and Dabigatran Prescribed in the Non-valvular Atrial Fibrillation Population With Humana Healthcare Coverage",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 38499,
      "start_date": "2014-10-28",
      "completion_date": "2016-03-15",
      "has_results": true,
      "last_update_posted_date": "2017-06-08",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 1,
      "location_summary": "Louisville, Kentucky",
      "locations": [
        {
          "city": "Louisville",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02061748"
    },
    {
      "nct_id": "NCT01906021",
      "title": "Study of New Software Used During Ablations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Liver Cancer",
        "Neoplasms, Liver",
        "Hepatic Neoplasms",
        "Hepatic Cancer"
      ],
      "interventions": [
        {
          "name": "CT/CBCT thermometry method",
          "type": "PROCEDURE"
        },
        {
          "name": "Ablation Probe",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "National Institutes of Health Clinical Center (CC)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 13,
      "start_date": "2013-09-23",
      "completion_date": "2020-12-08",
      "has_results": false,
      "last_update_posted_date": "2020-12-10",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01906021"
    },
    {
      "nct_id": "NCT04862221",
      "title": "TReatment for ImmUne Mediated PathopHysiology",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Acute Liver Failure",
        "Fulminant Hepatic Failure",
        "Hepatic Encephalopathy",
        "Acute Liver Injury",
        "Immune Dysregulation"
      ],
      "interventions": [
        {
          "name": "High-dose methylprednisolone",
          "type": "DRUG"
        },
        {
          "name": "Equine anti-thymocyte globulin",
          "type": "DRUG"
        },
        {
          "name": "Prednisolone",
          "type": "DRUG"
        },
        {
          "name": "Placebo for prednisolone",
          "type": "DRUG"
        },
        {
          "name": "Placebo for infusions",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        },
        {
          "name": "Methylprednisolone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "1 Year to 18 Years"
      },
      "enrollment_count": 44,
      "start_date": "2022-02-09",
      "completion_date": "2027-02",
      "has_results": false,
      "last_update_posted_date": "2026-08-12",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 17,
      "location_summary": "Los Angeles, California • Palo Alto, California • San Diego, California + 14 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04862221"
    },
    {
      "nct_id": "NCT01805778",
      "title": "Preventing Cardiac Sequelae in Pediatric Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Anthracycline-induced Cardiotoxicity"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "The Hospital for Sick Children",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "Up to 18 Years"
      },
      "enrollment_count": 1128,
      "start_date": "2012-12",
      "completion_date": "2018-09",
      "has_results": false,
      "last_update_posted_date": "2019-07-08",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01805778"
    },
    {
      "nct_id": "NCT02700984",
      "title": "A Study to Assess Long-Term Safety of the CyPass Micro-Stent in Patients Completing the COMPASS Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Primary Open Angle Glaucoma (POAG)"
      ],
      "interventions": [
        {
          "name": "CyPass Micro-Stent",
          "type": "DEVICE"
        },
        {
          "name": "Cataract Surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "Alcon Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 282,
      "start_date": "2016-03-30",
      "completion_date": "2018-04-18",
      "has_results": true,
      "last_update_posted_date": "2024-01-24",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 22,
      "location_summary": "Glendale, Arizona • Fayetteville, Arkansas • La Jolla, California + 19 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Fort Collins",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02700984"
    },
    {
      "nct_id": "NCT07850284",
      "title": "SMS-Based Remote Symptom Monitoring for Patients With Plasma Cell Disorders",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "AL Amyloidosis",
        "Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "Non-Interventional Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2026-08-25",
      "completion_date": "2028-08-25",
      "has_results": false,
      "last_update_posted_date": "2026-09-30",
      "last_synced_at": "2026-10-19T17:50:41.099Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07850284"
    }
  ]
}