{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=11",
    "query": {
      "intervention": "Observational only",
      "page": 11
    },
    "page_size": 10
  },
  "pagination": {
    "page": 11,
    "page_size": 10,
    "total_count": 825,
    "total_pages": 83,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=12&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+only&page=10&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-21T07:44:10.542Z",
  "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": "NCT05591092",
      "title": "Radioiodine Planar and a SPECT/CT Imaging With Iodine-123 for Evaluation of Follicular Thyroid Nodules Prior to Surgery",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Thyroid Gland Follicular Carcinoma"
      ],
      "interventions": [
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Iodine I-123",
          "type": "RADIATION"
        },
        {
          "name": "Planar Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Single Photon Emission Computed Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "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": 2,
      "start_date": "2023-11-10",
      "completion_date": "2025-01-21",
      "has_results": false,
      "last_update_posted_date": "2026-08-11",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05591092"
    },
    {
      "nct_id": "NCT01156298",
      "title": "Controlled High Risk AVONEX® Multiple Sclerosis Prevention Study In Ongoing Neurological Surveillance",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 383,
      "start_date": "2010-06",
      "completion_date": "2017-03",
      "has_results": false,
      "last_update_posted_date": "2012-08-03",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01156298"
    },
    {
      "nct_id": "NCT04229563",
      "title": "Post-Market Registry of AURYON Atherectomy Device in Subjects Affected With Infrainguinal Peripheral Artery Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Infrainguinal Peripheral Artery Disease",
        "Peripheral Arterial Disease",
        "PAD"
      ],
      "interventions": [
        {
          "name": "AURYON Atherectomy System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Angiodynamics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 102,
      "start_date": "2020-08-04",
      "completion_date": "2023-04-17",
      "has_results": true,
      "last_update_posted_date": "2026-05-18",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 10,
      "location_summary": "Scottsdale, Arizona • Tucson, Arizona • Davenport, Florida + 7 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Davenport",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04229563"
    },
    {
      "nct_id": "NCT06212479",
      "title": "An Observational Study On TheAccuracy Of Whole-Body Magnetic Resonance Imaging (Wb-Mri) ScreeningTo Predict Clinically Significant Diagnoses In General Population Subjects Interested In Proactive And Advanced General Preventive Healthcare.",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer",
        "Metabolic Disease",
        "Aneurysm",
        "Neurologic Disorder"
      ],
      "interventions": [
        {
          "name": "MRI Scan",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Hercules",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100000,
      "start_date": "2024-05-17",
      "completion_date": "2037-01",
      "has_results": false,
      "last_update_posted_date": "2025-04-30",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 1,
      "location_summary": "Watertown, Massachusetts",
      "locations": [
        {
          "city": "Watertown",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06212479"
    },
    {
      "nct_id": "NCT04088773",
      "title": "Biomarkers of Intestinal Fibrosis in Small Bowel Crohn's Disease",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Crohn Disease"
      ],
      "interventions": [
        {
          "name": "blood biomarkers",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "stool biomarkers",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "MRI imaging",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "8 Years to 70 Years"
      },
      "enrollment_count": 232,
      "start_date": "2019-11-01",
      "completion_date": "2026-06",
      "has_results": false,
      "last_update_posted_date": "2025-06-13",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 4,
      "location_summary": "Atlanta, Georgia • Ann Arbor, Michigan • Rochester, Minnesota + 1 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04088773"
    },
    {
      "nct_id": "NCT07024823",
      "title": "A Study to Investigate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of AZD4248 in Healthy Participants and Participants With Chronic Kidney Disease and Type 2 Diabetes and to Assess Home Measurements of Creatinine in a Non Interventional Cohort",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "AZD4248",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 124,
      "start_date": "2025-06-09",
      "completion_date": "2026-12-25",
      "has_results": false,
      "last_update_posted_date": "2026-08-12",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 5,
      "location_summary": "Glendale, California • Chicago, Illinois • Ann Arbor, Michigan + 2 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07024823"
    },
    {
      "nct_id": "NCT02144961",
      "title": "The Effects of Indocyanine Green Angiography (IGA) on Deep Inferior Epigastric Artery Perforator (DIEP) Flap Design and Post-Operative Fat Necrosis",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "25 Years to 65 Years · Female only"
      },
      "enrollment_count": 100,
      "start_date": "2014-01",
      "completion_date": "2020-09",
      "has_results": false,
      "last_update_posted_date": "2016-03-24",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02144961"
    },
    {
      "nct_id": "NCT03956277",
      "title": "Single-center, Feasibility Study to Evaluate the Use and Safety of the Percutaneous Ultrasound Gastrostomy Technique",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gastrostomy"
      ],
      "interventions": [
        {
          "name": "PUG",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CoapTech",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2019-12-01",
      "completion_date": "2024-02-04",
      "has_results": false,
      "last_update_posted_date": "2023-10-19",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03956277"
    },
    {
      "nct_id": "NCT02229409",
      "title": "Effectiveness of the Walking Intervention Walkadoo: A Randomized Controlled Pilot Trial in an Employee Population",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Walkadoo",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "MeYou Health, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 265,
      "start_date": "2014-09",
      "completion_date": "2014-11",
      "has_results": false,
      "last_update_posted_date": "2016-02-04",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02229409"
    },
    {
      "nct_id": "NCT00086528",
      "title": "Safety and Pharmacokinetics of XL647 Administered Orally to Subjects With Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "XL647",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Kadmon Corporation, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 41,
      "start_date": "2004-06",
      "completion_date": "2007-11",
      "has_results": false,
      "last_update_posted_date": "2022-05-13",
      "last_synced_at": "2026-10-21T07:44:10.542Z",
      "location_count": 2,
      "location_summary": "Stanford, California • Rochester, Minnesota",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00086528"
    }
  ]
}