{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+no+intervention",
    "query": {
      "intervention": "Observational study no intervention"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 639,
    "total_pages": 64,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+no+intervention&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T12:20:28.870Z",
  "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": "NCT04212143",
      "title": "Central Blood Pressure and Pulse Wave Velocity in Kidney Transplant Recipients",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "End Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "there is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's National Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "3 Years to 21 Years"
      },
      "enrollment_count": 150,
      "start_date": "2021-07-01",
      "completion_date": "2026-07-01",
      "has_results": false,
      "last_update_posted_date": "2025-07-03",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04212143"
    },
    {
      "nct_id": "NCT04251208",
      "title": "MOms in REcovery (MORE) Study: Defining Optimal Care",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Opioid-Related Disorders",
        "NAS",
        "Substance Use Disorders"
      ],
      "interventions": [
        {
          "name": "Observational Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Trustees of Dartmouth College",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "16 Years to 50 Years · Female only"
      },
      "enrollment_count": 444,
      "start_date": "2019-07-30",
      "completion_date": "2024-01-31",
      "has_results": false,
      "last_update_posted_date": "2024-04-09",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 10,
      "location_summary": "Augusta, Maine • Bangor, Maine • Keene, New Hampshire + 6 more",
      "locations": [
        {
          "city": "Augusta",
          "state": "Maine"
        },
        {
          "city": "Bangor",
          "state": "Maine"
        },
        {
          "city": "Keene",
          "state": "New Hampshire"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04251208"
    },
    {
      "nct_id": "NCT06464341",
      "title": "Nodal Burden and Nodal Recurrence in Patients With Isolated Tumor Cells After Neoadjuvant Chemotherapy Treated With Axillary Dissection or Nodal Radiation: the OPBC-05/EUBREAST-14R/ICARO Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Observational study no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University Hospital, Basel, Switzerland",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 100 Years · Female only"
      },
      "enrollment_count": 583,
      "start_date": "2023-05-04",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-01-20",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 20,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Miami, Florida + 11 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06464341"
    },
    {
      "nct_id": "NCT04135365",
      "title": "Pediatric Type 1 Diabetes and Neurocognitive Complications Cohort Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Type 1 Diabetes"
      ],
      "interventions": [
        {
          "name": "neurocognitive assessment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "neuroimaging assessment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "6 Years to 11 Years"
      },
      "enrollment_count": 12,
      "start_date": "2021-01-18",
      "completion_date": "2022-10-31",
      "has_results": false,
      "last_update_posted_date": "2022-11-01",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04135365"
    },
    {
      "nct_id": "NCT05440851",
      "title": "Platform of Randomized Adaptive Clinical Trials in Critical Illness",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Respiratory Insufficiency",
        "Extracorporeal Membrane Oxygenation Complication",
        "Mechanical Ventilation Pressure High"
      ],
      "interventions": [
        {
          "name": "Ultra-Protective Ventilation Facilitated by Extracorporeal Support",
          "type": "OTHER"
        },
        {
          "name": "Lung-Protective Ventilation (LPV)",
          "type": "OTHER"
        },
        {
          "name": "Driving Pressure-Limited Ventilation (DPL)",
          "type": "OTHER"
        },
        {
          "name": "Lung- and Diaphragm-Protective Ventilation and Sedation (LDPVS)",
          "type": "OTHER"
        },
        {
          "name": "Early Cohort corticosteroid dose",
          "type": "DRUG"
        },
        {
          "name": "Extended Cohort corticosteroid dose",
          "type": "DRUG"
        },
        {
          "name": "Usual care without routine corticosteroids",
          "type": "DRUG"
        },
        {
          "name": "Usual care without extending corticosteroids",
          "type": "DRUG"
        },
        {
          "name": "Usual care with fludrocortisone",
          "type": "DRUG"
        },
        {
          "name": "Usual care without fludrocortisone",
          "type": "DRUG"
        },
        {
          "name": "Drug 4 mL:",
          "type": "DRUG"
        },
        {
          "name": "Drug 40 mg:",
          "type": "DRUG"
        },
        {
          "name": "PEEP-20",
          "type": "OTHER"
        },
        {
          "name": "PEEP-AOP",
          "type": "OTHER"
        },
        {
          "name": "PEEP-10",
          "type": "OTHER"
        },
        {
          "name": "VV ECMO-facilitated strategy of earlier awakening, extubation and rehabilitation",
          "type": "OTHER"
        },
        {
          "name": "Electrical impedance tomography (EIT)",
          "type": "OTHER"
        },
        {
          "name": "no treatment / intervention arm is involved.",
          "type": "OTHER"
        },
        {
          "name": "Usual care",
          "type": "OTHER"
        },
        {
          "name": "Early Routine IMT",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "University Health Network, Toronto",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6250,
      "start_date": "2023-04-30",
      "completion_date": "2027-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-07",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 26,
      "location_summary": "Tucson, Arizona • Los Angeles, California • San Diego, California + 19 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05440851"
    },
    {
      "nct_id": "NCT04106167",
      "title": "Long-term, Non-interventional, Observational Study Following Treatment With Fate Therapeutics FT500 Cellular Immunotherapy",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Advanced Solid Tumor",
        "Lymphoma",
        "Gastric Cancer",
        "Colorectal Cancer",
        "Head and Neck Cancer",
        "Squamous Cell Carcinoma",
        "EGFR Positive Solid Tumor",
        "HER2-positive Breast Cancer",
        "Hepatocellular Carcinoma",
        "Small-cell Lung Cancer",
        "Renal Cell Carcinoma",
        "Pancreas Cancer",
        "Melanoma",
        "NSCLC",
        "Urothelial Carcinoma",
        "Cervical Cancer",
        "Microsatellite Instability",
        "Merkel Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Allogeneic natural killer (NK) cell",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "Fate Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2019-06-11",
      "completion_date": "2023-08-11",
      "has_results": false,
      "last_update_posted_date": "2023-09-21",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 4,
      "location_summary": "San Diego, California • Minneapolis, Minnesota • Hackensack, New Jersey + 1 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Hackensack",
          "state": "New Jersey"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04106167"
    },
    {
      "nct_id": "NCT02057510",
      "title": "Observational Study of Dental Outcomes in Head and Neck Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Head and Neck Cancer",
        "Dental Disease",
        "Xerostomia",
        "Osteoradionecrosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 613,
      "start_date": "2014-02",
      "completion_date": "2020-01-28",
      "has_results": false,
      "last_update_posted_date": "2026-06-30",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 6,
      "location_summary": "Farmington, Connecticut • Boston, Massachusetts • New York, New York + 3 more",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02057510"
    },
    {
      "nct_id": "NCT06352060",
      "title": "Dynamic Data-Driven Management of Atrial Fibrillation Using Implantable Cardiac Monitors: The MONITOR-AF Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "No intervention or administration will be performed due to the observational nature of the study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Kansas City Heart Rhythm Research Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 598,
      "start_date": "2018-01-01",
      "completion_date": "2021-12-31",
      "has_results": true,
      "last_update_posted_date": "2025-04-18",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 7,
      "location_summary": "Overland Park, Kansas • Independence, Missouri • Kansas City, Missouri",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Independence",
          "state": "Missouri"
        },
        {
          "city": "Independence",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06352060"
    },
    {
      "nct_id": "NCT04604418",
      "title": "Outcomes and Health Care Resource Utilization in Pediatric Congenital Heart Disease Patients Undergoing Non-Cardiac Procedures",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Congenital Heart Disease in Children"
      ],
      "interventions": [
        {
          "name": "No intervention. It is observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 10000,
      "start_date": "2020-10-01",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-07",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 9,
      "location_summary": "Los Angeles, California • Washington D.C., District of Columbia • Atlanta, Georgia + 6 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04604418"
    },
    {
      "nct_id": "NCT01097837",
      "title": "Epilepsy Birth Control Registry",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Epilepsy"
      ],
      "interventions": [
        {
          "name": "Non-interventional",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Neuroendocrine Associates P.C.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "47 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 47 Years · Female only"
      },
      "enrollment_count": 1000,
      "start_date": "2010-03",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2015-10-16",
      "last_synced_at": "2026-09-02T12:20:28.870Z",
      "location_count": 2,
      "location_summary": "Wellesley, Massachusetts • New York, New York",
      "locations": [
        {
          "city": "Wellesley",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01097837"
    }
  ]
}