{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=20",
    "query": {
      "intervention": "Observation only",
      "page": 20
    },
    "page_size": 10
  },
  "pagination": {
    "page": 20,
    "page_size": 10,
    "total_count": 878,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=21&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=19&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-31T02:02:53.745Z",
  "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": "NCT06566170",
      "title": "A Real-World Comparative Study of Donanemab (LY3002813) Plus Usual Care Versus Usual Care Alone in US Participants With Early Symptomatic Alzheimer's Disease",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alzheimer Disease"
      ],
      "interventions": [
        {
          "name": "Donanemab",
          "type": "DRUG"
        },
        {
          "name": "Usual Care",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eli Lilly and Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 6250,
      "start_date": "2024-10-07",
      "completion_date": "2033-02",
      "has_results": false,
      "last_update_posted_date": "2026-10-20",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 1,
      "location_summary": "Huntsville, Alabama",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06566170"
    },
    {
      "nct_id": "NCT06582745",
      "title": "Targeted Approach to Langerhans Cell Histiocytosis (LCH) Using MEK Inhibitor, Trametinib",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Langerhans Cell Histiocytosis"
      ],
      "interventions": [
        {
          "name": "Trametinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cook Children's Health Care System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "1 Year to 30 Years"
      },
      "enrollment_count": 75,
      "start_date": "2024-06-24",
      "completion_date": "2039-12",
      "has_results": false,
      "last_update_posted_date": "2026-04-07",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 1,
      "location_summary": "Fort Worth, Texas",
      "locations": [
        {
          "city": "Fort Worth",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06582745"
    },
    {
      "nct_id": "NCT04262830",
      "title": "Cardiotoxicity Assessment Through Comprehensive Heart Imaging to Predict Heart Failure",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiotoxicity",
        "Pediatric Cancer",
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Cardiac magnetic resonance imaging (MRI)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Accelerometer physical activity monitoring",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Hari Narayan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "13 Years to 39 Years"
      },
      "enrollment_count": 150,
      "start_date": "2019-09-30",
      "completion_date": "2030-09-30",
      "has_results": false,
      "last_update_posted_date": "2025-01-28",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04262830"
    },
    {
      "nct_id": "NCT06892002",
      "title": "Description of Patients With Type 1 Diabetes Treated With Teplizumab",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Type 1 Diabetes"
      ],
      "interventions": [
        {
          "name": "Teplizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 110,
      "start_date": "2025-02-11",
      "completion_date": "2025-08-05",
      "has_results": false,
      "last_update_posted_date": "2025-08-15",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 24,
      "location_summary": "Little Rock, Arkansas • San Francisco, California • Aurora, Colorado + 19 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06892002"
    },
    {
      "nct_id": "NCT02736565",
      "title": "Pbi-shRNA™ EWS/FLI1 Type 1 LPX in Subjects With Advanced Ewing's Sarcoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Ewing's Sarcoma",
        "Ewing Family of Tumors",
        "Ewing's Tumor Metastatic",
        "Ewing's Sarcoma Metastatic",
        "Ewing's Tumor Recurrent",
        "Rare Diseases",
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "pbi-shRNA™ EWS/FLI1 Type 1 Lipoplex",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Gradalis, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "8 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2016-10",
      "completion_date": "2020-08-04",
      "has_results": false,
      "last_update_posted_date": "2023-11-13",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 2,
      "location_summary": "New York, New York • Dallas, Texas",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02736565"
    },
    {
      "nct_id": "NCT02320292",
      "title": "Rituximab With or Without Yttrium Y-90 Ibritumomab Tiuxetan in Treating Patients With Untreated Follicular Lymphoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Ann Arbor Stage I Grade 1 Follicular Lymphoma",
        "Ann Arbor Stage I Grade 2 Follicular Lymphoma",
        "Ann Arbor Stage II Grade 1 Contiguous Follicular Lymphoma",
        "Ann Arbor Stage II Grade 1 Non-Contiguous Follicular Lymphoma",
        "Ann Arbor Stage II Grade 2 Contiguous Follicular Lymphoma",
        "Ann Arbor Stage II Grade 2 Non-Contiguous Follicular Lymphoma",
        "Ann Arbor Stage III Grade 1 Follicular Lymphoma",
        "Ann Arbor Stage III Grade 2 Follicular Lymphoma",
        "Ann Arbor Stage IV Grade 1 Follicular Lymphoma",
        "Ann Arbor Stage IV Grade 2 Follicular Lymphoma"
      ],
      "interventions": [
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Rituximab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Yttrium Y-90 Ibritumomab Tiuxetan",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BIOLOGICAL",
        "RADIATION"
      ],
      "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": 20,
      "start_date": "2015-02-11",
      "completion_date": "2023-11-09",
      "has_results": true,
      "last_update_posted_date": "2025-07-09",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02320292"
    },
    {
      "nct_id": "NCT00259909",
      "title": "Observational Study Of An Electronic Questionnaire In Patients With Chronic Obstructive Pulmonary Disease (COPD)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive",
        "Infections, Bacterial"
      ],
      "interventions": [
        {
          "name": "GSK questionnaire",
          "type": "OTHER"
        },
        {
          "name": "St. George's Respiratory Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Acute Short Form 12 version 2",
          "type": "OTHER"
        },
        {
          "name": "Global Efficacy questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 259,
      "start_date": "2005-11-02",
      "completion_date": "2006-11-07",
      "has_results": false,
      "last_update_posted_date": "2017-10-12",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 79,
      "location_summary": "Birmingham, Alabama • Hueytown, Alabama • Jasper, Alabama + 69 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Hueytown",
          "state": "Alabama"
        },
        {
          "city": "Jasper",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00259909"
    },
    {
      "nct_id": "NCT00631904",
      "title": "St. Mary's Duluth Clinic (SMDC) Pacemaker Magnetic Resonance Imaging (MRI) Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Essentia Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2005-01",
      "completion_date": "2011-07",
      "has_results": false,
      "last_update_posted_date": "2011-09-02",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 1,
      "location_summary": "Duluth, Minnesota",
      "locations": [
        {
          "city": "Duluth",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00631904"
    },
    {
      "nct_id": "NCT03572387",
      "title": "A Pilot Study of 5-AZA and ATRA for Prostate Cancer With PSA-only Recurrence After Local Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostatic Neoplasms",
        "Prostate Neoplasms",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "5-Azacitidine",
          "type": "DRUG"
        },
        {
          "name": "all trans retinoic acid",
          "type": "DRUG"
        },
        {
          "name": "Lupron",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Icahn School of Medicine at Mount Sinai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 14,
      "start_date": "2018-08-20",
      "completion_date": "2022-07-08",
      "has_results": true,
      "last_update_posted_date": "2024-04-30",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03572387"
    },
    {
      "nct_id": "NCT00448448",
      "title": "Bracing in Adolescent Idiopathic Scoliosis Trial (BrAIST)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Adolescent Idiopathic Scoliosis"
      ],
      "interventions": [
        {
          "name": "Brace",
          "type": "DEVICE"
        },
        {
          "name": "Observation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Stuart L. Weinstein, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "10 Years to 15 Years"
      },
      "enrollment_count": 383,
      "start_date": "2007-02",
      "completion_date": "2013-09",
      "has_results": true,
      "last_update_posted_date": "2026-03-02",
      "last_synced_at": "2026-10-31T02:02:53.745Z",
      "location_count": 22,
      "location_summary": "Madera, California • Sacramento, California • San Diego, California + 18 more",
      "locations": [
        {
          "city": "Madera",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00448448"
    }
  ]
}