{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=2",
    "query": {
      "intervention": "No intervention (observational study)",
      "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?intervention=No+intervention+%28observational+study%29&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-01T22:38:19.600Z",
  "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": "NCT01873131",
      "title": "A Clinical Trial of Pulsed-dye Laser Versus Timolol Topical Solution Versus Observation on the Growth of Hemangioma in Newborn",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hemangioma"
      ],
      "interventions": [
        {
          "name": "topical timolol maleate",
          "type": "DRUG"
        },
        {
          "name": "Pulsed dye laser",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "3 Months",
        "sex": "ALL",
        "summary": "Up to 3 Months"
      },
      "enrollment_count": 126,
      "start_date": "2011-02",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2023-11-02",
      "last_synced_at": "2026-09-01T22:38:19.600Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01873131"
    },
    {
      "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": "2026-09-01T22:38:19.600Z",
      "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": "2026-09-01T22:38:19.600Z",
      "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": "NCT04466150",
      "title": "Impact of Ocrelizumab on Cerebrospinal Fluid Biomarkers at Multiple Sclerosis Onset",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Relapsing Multiple Sclerosis",
        "Clinically Isolated Syndrome"
      ],
      "interventions": [
        {
          "name": "Ocrelizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 30,
      "start_date": "2020-08-30",
      "completion_date": "2027-07",
      "has_results": false,
      "last_update_posted_date": "2026-01-26",
      "last_synced_at": "2026-09-01T22:38:19.600Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04466150"
    },
    {
      "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": "2026-09-01T22:38:19.600Z",
      "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": "NCT00198510",
      "title": "Safety and Efficacy Study of Vitrase for Clearance of Severe Vitreous Hemorrhage",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Vitreous Hemorrhage",
        "Diabetic Retinopathy"
      ],
      "interventions": [
        {
          "name": "Vitrase",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bausch & Lomb Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 750,
      "start_date": "1998-11",
      "completion_date": "2003-03",
      "has_results": false,
      "last_update_posted_date": "2013-03-15",
      "last_synced_at": "2026-09-01T22:38:19.600Z",
      "location_count": 61,
      "location_summary": "Tucson, Arizona • Beverly Hills, California • Chula Vista, California + 51 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Fresno",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00198510"
    },
    {
      "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": "2026-09-01T22:38:19.600Z",
      "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": "2026-09-01T22:38:19.600Z",
      "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"
    },
    {
      "nct_id": "NCT00458029",
      "title": "Middle-School Based Primary Prevention Trial of Type 2 Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 2 Diabetes"
      ],
      "interventions": [
        {
          "name": "integrated program of nutrition, activity, behavior, and promotion",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "16 Years",
        "sex": "ALL",
        "summary": "10 Years to 16 Years"
      },
      "enrollment_count": 4603,
      "start_date": "2006-08",
      "completion_date": "2011-02",
      "has_results": false,
      "last_update_posted_date": "2020-04-30",
      "last_synced_at": "2026-09-01T22:38:19.600Z",
      "location_count": 8,
      "location_summary": "Irvine, California • Rockville, Maryland • Chapel Hill, North Carolina + 5 more",
      "locations": [
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Rockville",
          "state": "Maryland"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00458029"
    },
    {
      "nct_id": "NCT03559088",
      "title": "A Study of the Effect of a Disease-Specific Migraine Smart Phone Application (App) on Participant Care",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Migraine"
      ],
      "interventions": [
        {
          "name": "Migraine App",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Eli Lilly and Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 120,
      "start_date": "2018-06-11",
      "completion_date": "2019-04-26",
      "has_results": false,
      "last_update_posted_date": "2020-07-22",
      "last_synced_at": "2026-09-01T22:38:19.600Z",
      "location_count": 16,
      "location_summary": "Charlotte, North Carolina • Glen Alpine, North Carolina • Huntersville, North Carolina + 5 more",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03559088"
    }
  ]
}