{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=n%2Fa+-+observational+study&page=2",
    "query": {
      "intervention": "n/a - 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=n%2Fa+-+observational+study&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T21:11:30.663Z",
  "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": "NCT01565551",
      "title": "Transforming Research and Clinical Knowledge in TBI Pilot",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Traumatic Brain Injury"
      ],
      "interventions": [
        {
          "name": "N/A (Observational Study)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 650,
      "start_date": "2010-04",
      "completion_date": "2013-12",
      "has_results": true,
      "last_update_posted_date": "2014-02-17",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 4,
      "location_summary": "San Francisco, California • New York, New York • Pittsburgh, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01565551"
    },
    {
      "nct_id": "NCT00005398",
      "title": "University of North Carolina Alumni Heart Study",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Diseases",
        "Heart Diseases",
        "Coronary Disease",
        "Depression"
      ],
      "interventions": [
        {
          "name": "There is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 6340,
      "start_date": "1996-05",
      "completion_date": "2030-05",
      "has_results": false,
      "last_update_posted_date": "2026-07-08",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00005398"
    },
    {
      "nct_id": "NCT05813678",
      "title": "A Long-term, Post-marketing Safety Study of Palynziq in Patients With PKU (PALace)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Phenylketonuria (PKU)"
      ],
      "interventions": [
        {
          "name": "Pegvaliase",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "BioMarin Pharmaceutical",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 450,
      "start_date": "2022-06-06",
      "completion_date": "2033-11-01",
      "has_results": false,
      "last_update_posted_date": "2026-03-25",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 12,
      "location_summary": "Aurora, Colorado • Atlanta, Georgia • Chicago, Illinois + 9 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05813678"
    },
    {
      "nct_id": "NCT05775549",
      "title": "A Study to Characterize the Outcomes of Olaparib Maintenance Monotherapy in Newly Diagnosed BRCAwt Ovarian Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Advanced Ovarian Cancer"
      ],
      "interventions": [
        {
          "name": "None (Observational Study)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "130 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 130 Years · Female only"
      },
      "enrollment_count": 24,
      "start_date": "2023-07-10",
      "completion_date": "2023-10-27",
      "has_results": false,
      "last_update_posted_date": "2024-09-20",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 7,
      "location_summary": "Tampa, Florida • Shreveport, Louisiana • Annapolis, Maryland + 4 more",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Shreveport",
          "state": "Louisiana"
        },
        {
          "city": "Annapolis",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05775549"
    },
    {
      "nct_id": "NCT07613918",
      "title": "Brain Blood Flow and Cerebral Autoregulation Monitoring in Critically Ill Children",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Critical Illness",
        "Pediatric Critical Illness",
        "Respiratory Failure",
        "Traumatic Brain Injury",
        "Cardiac Arrest"
      ],
      "interventions": [
        {
          "name": "Transcranial Doppler",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "1 Day to 17 Years"
      },
      "enrollment_count": 125,
      "start_date": "2026-08-03",
      "completion_date": "2028-05",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07613918"
    },
    {
      "nct_id": "NCT07141277",
      "title": "GRANITE: Airsupra Effectiveness in the Real World",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "None (Observational study)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 4060,
      "start_date": "2025-07-09",
      "completion_date": "2026-03-20",
      "has_results": false,
      "last_update_posted_date": "2026-06-12",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 1,
      "location_summary": "Wilmington, Delaware",
      "locations": [
        {
          "city": "Wilmington",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07141277"
    },
    {
      "nct_id": "NCT07564869",
      "title": "Skin Hydration and Facial Aging in Women Aged 30-60: An Observational Correlational Study Using Bioimpedance Analysis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Skin Aging",
        "Skin Hydration",
        "Facial Aging",
        "Transepidermal Water Loss"
      ],
      "interventions": [
        {
          "name": "BT-Analyze Bioimpedance Measurement",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "IAS Skin Care",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "30 Years to 60 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2026-05-01",
      "completion_date": "2026-05-24",
      "has_results": false,
      "last_update_posted_date": "2026-06-01",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 1,
      "location_summary": "Winter Garden, Florida",
      "locations": [
        {
          "city": "Winter Garden",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07564869"
    },
    {
      "nct_id": "NCT04923633",
      "title": "The Reproducibility and Consistency of Instrument-assisted Soft Tissue Manipulation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Massage"
      ],
      "interventions": [
        {
          "name": "Quantifiable Soft Tissue Manipulation (QSTM)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 106,
      "start_date": "2021-05-11",
      "completion_date": "2022-10-19",
      "has_results": false,
      "last_update_posted_date": "2023-11-14",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04923633"
    },
    {
      "nct_id": "NCT01033240",
      "title": "CS1008- in Combination With Sorafenib Compared to Sorafenib Alone in Subjects With Advanced Liver Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Advanced Hepatocellular Carcinoma",
        "Liver Cancer",
        "Hepatic Cancer",
        "Liver Neoplasms"
      ],
      "interventions": [
        {
          "name": "CS-1008 2 mg/kg",
          "type": "DRUG"
        },
        {
          "name": "Sorafenib",
          "type": "DRUG"
        },
        {
          "name": "CS-1008 6/2 mg/kg",
          "type": "DRUG"
        },
        {
          "name": "CS-1008 6/6 mg/kg",
          "type": "DRUG"
        },
        {
          "name": "CS-1008 4 mg/kg",
          "type": "DRUG"
        },
        {
          "name": "CS-1008 6 mg/kg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Daiichi Sankyo",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 172,
      "start_date": "2010-07-09",
      "completion_date": "2013-09-09",
      "has_results": true,
      "last_update_posted_date": "2021-04-08",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 4,
      "location_summary": "Los Angeles, California • Washington D.C., District of Columbia • New York, New York + 1 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01033240"
    },
    {
      "nct_id": "NCT04394234",
      "title": "A Study of Severe Uterine Bleeding Following Exposure to Direct Oral Anticoagulants",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Uterine Hemorrhage"
      ],
      "interventions": [
        {
          "name": "Direct oral anticoagulant (DOACs)",
          "type": "DRUG"
        },
        {
          "name": "Warfarin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 961985,
      "start_date": "2020-05-15",
      "completion_date": "2020-06-01",
      "has_results": false,
      "last_update_posted_date": "2025-04-27",
      "last_synced_at": "2026-09-25T21:11:30.663Z",
      "location_count": 1,
      "location_summary": "Titusville, New Jersey",
      "locations": [
        {
          "city": "Titusville",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04394234"
    }
  ]
}