{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=All+subjects-Observation",
    "query": {
      "intervention": "All subjects-Observation"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 143,
    "total_pages": 15,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=All+subjects-Observation&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T17:26:54.350Z",
  "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": "NCT00582543",
      "title": "MRI/MRSI in Risk Assessment of Prostate Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "eMRI/MRSI",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "MALE",
        "summary": "Male only"
      },
      "enrollment_count": 357,
      "start_date": "2005-10",
      "completion_date": "2011-10",
      "has_results": false,
      "last_update_posted_date": "2011-10-17",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00582543"
    },
    {
      "nct_id": "NCT02322255",
      "title": "A Natural History Study of Fibrodysplasia Ossificans Progressiva (FOP)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fibrodysplasia Ossificans Progressiva"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Clementia Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "Up to 65 Years"
      },
      "enrollment_count": 114,
      "start_date": "2014-12-18",
      "completion_date": "2020-04-09",
      "has_results": false,
      "last_update_posted_date": "2020-06-26",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 2,
      "location_summary": "San Francisco, California • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02322255"
    },
    {
      "nct_id": "NCT03492424",
      "title": "Ablative Therapy in the Management of Prostate Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "cryotherapy",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "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": 200,
      "start_date": "2018-01-02",
      "completion_date": "2039-09-02",
      "has_results": false,
      "last_update_posted_date": "2025-12-23",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03492424"
    },
    {
      "nct_id": "NCT07429890",
      "title": "REVIVE Prospective Registry Cohort Study",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Oropharyngeal Dysphagia"
      ],
      "interventions": [
        {
          "name": "Other: No Intervention (subjects were previously treated with Iltamiocel). This is a observational study and all participants will be observed with no intervention.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 31,
      "start_date": "2026-08-30",
      "completion_date": "2032-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-18",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 2,
      "location_summary": "Sacramento, California • San Francisco, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07429890"
    },
    {
      "nct_id": "NCT05307939",
      "title": "A Study on Using Cell-Free Tumor DNA (ctDNA) Testing to Decide When to StartRoutine Treatment in People With Human Papilloma Virus (HPV)- Associated Oropharynx Cancer (OPC)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HPV",
        "Oropharynx Cancer",
        "HPV-Related Carcinoma",
        "HPV-Related Malignancy",
        "HPV Positive Oropharyngeal Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "HPV ctDNA Assay",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "MRI Studies",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "EORTC QLQ H&N 35 and C30",
          "type": "BEHAVIORAL"
        },
        {
          "name": "MDADI-HN",
          "type": "BEHAVIORAL"
        },
        {
          "name": "COST-FACIT",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Intensity-Modulated Radiation Therapy (Arm A)",
          "type": "RADIATION"
        },
        {
          "name": "Chemoradiation (Arm B)",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "BEHAVIORAL",
        "RADIATION",
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2022-03-24",
      "completion_date": "2027-03-24",
      "has_results": false,
      "last_update_posted_date": "2026-04-13",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 8,
      "location_summary": "Miami, Florida • Basking Ridge, New Jersey • Middletown, New Jersey + 5 more",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Basking Ridge",
          "state": "New Jersey"
        },
        {
          "city": "Middletown",
          "state": "New Jersey"
        },
        {
          "city": "Montvale",
          "state": "New Jersey"
        },
        {
          "city": "Commack",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05307939"
    },
    {
      "nct_id": "NCT00876941",
      "title": "Assessing Screening Plus Brief Intervention's Resulting Efficacy (ASPIRE) to Stop Drug Use",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Drug Usage",
        "Drug Abuse",
        "Drug Dependence"
      ],
      "interventions": [
        {
          "name": "Standard Brief Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Enhanced Brief Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control: Information and Feedback",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Boston Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 589,
      "start_date": "2009-04",
      "completion_date": "2014-09",
      "has_results": false,
      "last_update_posted_date": "2014-10-02",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00876941"
    },
    {
      "nct_id": "NCT03640494",
      "title": "Bedside Optical Retinal Assessment of Hypoxic Ischemic Encephalopathy in Infants",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypoxic-Ischemic Encephalopathy"
      ],
      "interventions": [
        {
          "name": "Optical Coherence Tomography",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "20 Days",
        "sex": "ALL",
        "summary": "Up to 20 Days"
      },
      "enrollment_count": 57,
      "start_date": "2018-08-28",
      "completion_date": "2021-02-28",
      "has_results": false,
      "last_update_posted_date": "2021-04-08",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Salt Lake City, Utah",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03640494"
    },
    {
      "nct_id": "NCT01452464",
      "title": "Safety of MenACWY-CRM Vaccination in Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Meningococcal Disease"
      ],
      "interventions": [
        {
          "name": "MenACWY-CRM",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novartis Vaccines",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "11 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "11 Years to 21 Years"
      },
      "enrollment_count": 55397,
      "start_date": "2011-09",
      "completion_date": "2015-02",
      "has_results": false,
      "last_update_posted_date": "2015-02-26",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 3,
      "location_summary": "Riverside, California • San Diego, California • Valley Annex, 16994 E. Valley Blvd., Fontana, California",
      "locations": [
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Valley Annex, 16994 E. Valley Blvd., Fontana",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01452464"
    },
    {
      "nct_id": "NCT06422871",
      "title": "PReSeRVE-HD: Observational Study of the Merit HeRO® Graft and Super HeRO® in Patients on Hemodialysis",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "End Stage Renal Disease",
        "Hemodialysis Access Failure"
      ],
      "interventions": [
        {
          "name": "HeRO® Graft System or Super HeRO® System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Merit Medical Systems, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-07-28",
      "completion_date": "2028-12-28",
      "has_results": false,
      "last_update_posted_date": "2026-06-01",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 7,
      "location_summary": "Washington D.C., District of Columbia • Sarasota, Florida • Raleigh, North Carolina + 4 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "Raleigh",
          "state": "North Carolina"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06422871"
    },
    {
      "nct_id": "NCT00573651",
      "title": "Safety and Efficacy of Gardasil in Females With Juvenile Idiopathic Arthritis (JIA)/Seronegative Arthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Arthritis"
      ],
      "interventions": [
        {
          "name": "Blood Draws for Serum Titers",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University Hospitals Cleveland Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "26 Years",
        "sex": "FEMALE",
        "summary": "9 Years to 26 Years · Female only"
      },
      "enrollment_count": 43,
      "start_date": "2007-11",
      "completion_date": "2014-10-20",
      "has_results": true,
      "last_update_posted_date": "2024-07-05",
      "last_synced_at": "2026-09-05T17:26:54.350Z",
      "location_count": 4,
      "location_summary": "Chicago, Illinois • Cleveland, Ohio",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00573651"
    }
  ]
}