{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=21",
    "query": {
      "intervention": "Observation only",
      "page": 21
    },
    "page_size": 10
  },
  "pagination": {
    "page": 21,
    "page_size": 10,
    "total_count": 878,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=22&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=20&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-31T06:56:35.173Z",
  "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": "NCT02094625",
      "title": "NAC to Prevent Cisplatin-induced Hearing Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Neuroectodermal Tumors, Primitive",
        "Liver Neoplasms",
        "Osteosarcoma",
        "Other Childhood Cancers Using Cisplatin-based Regimens"
      ],
      "interventions": [
        {
          "name": "N-Acetylcysteine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Year to 21 Years"
      },
      "enrollment_count": 52,
      "start_date": "2016-03",
      "completion_date": "2021-08",
      "has_results": false,
      "last_update_posted_date": "2023-04-18",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02094625"
    },
    {
      "nct_id": "NCT04648306",
      "title": "Restore EF Observational Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Coronary Artery Disease",
        "Unstable Angina",
        "Angina, Stable",
        "NSTEMI - Non-ST Segment Elevation MI"
      ],
      "interventions": [
        {
          "name": "Prophylactic Impella support for a non-emergent PCI",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Abiomed Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 406,
      "start_date": "2019-09-01",
      "completion_date": "2021-09-30",
      "has_results": false,
      "last_update_posted_date": "2021-12-14",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 21,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona • Fayetteville, Arkansas + 18 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "North Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Springdale",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04648306"
    },
    {
      "nct_id": "NCT03465774",
      "title": "Indwelling Pleural Catheters With or Without Doxycycline in Treating Patients With Malignant Pleural Effusions",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pleural Neoplasm"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Indwelling Catheter",
          "type": "DEVICE"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson 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": 208,
      "start_date": "2018-03-08",
      "completion_date": "2028-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-14",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03465774"
    },
    {
      "nct_id": "NCT04656925",
      "title": "Automated Reinforcement Management System (ARMS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Alcohol Use Disorder"
      ],
      "interventions": [
        {
          "name": "Contingency management",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Washington State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 12,
      "start_date": "2021-03-29",
      "completion_date": "2021-12-08",
      "has_results": true,
      "last_update_posted_date": "2026-05-14",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 1,
      "location_summary": "Spokane, Washington",
      "locations": [
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04656925"
    },
    {
      "nct_id": "NCT06587100",
      "title": "Wearable Activity Tracking to Curb Hospitalizations",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hematopoietic Neoplasm",
        "Malignant Solid Neoplasm",
        "Lymphatic System Neoplasm"
      ],
      "interventions": [
        {
          "name": "Fitbit",
          "type": "DEVICE"
        },
        {
          "name": "Apple HealthKit-based devices",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 260,
      "start_date": "2025-04-07",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-09-23",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06587100"
    },
    {
      "nct_id": "NCT01158261",
      "title": "The Evicel Post-Authorization Surveillance Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Peripheral Vascular Disease",
        "Hemorrhage"
      ],
      "interventions": [
        {
          "name": "EVICEL ™ Fibrin Sealant (Human)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Ethicon, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2010-06",
      "completion_date": "2014-05",
      "has_results": true,
      "last_update_posted_date": "2015-08-19",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 2,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01158261"
    },
    {
      "nct_id": "NCT04320251",
      "title": "Tissue Growth Characterization for Cochlear Implant Users",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cochlear Implant"
      ],
      "interventions": [
        {
          "name": "cochlear implant revision surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Vanderbilt University 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": 24,
      "start_date": "2024-06-15",
      "completion_date": "2027-01-09",
      "has_results": false,
      "last_update_posted_date": "2026-04-08",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04320251"
    },
    {
      "nct_id": "NCT03126331",
      "title": "Intermittent Therapy in Metastatic Renal Cell Carcinoma Patients Treated With Ipilimumab and Nivolumab",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Renal Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Nivolumab",
          "type": "DRUG"
        },
        {
          "name": "Ipilimumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Case Comprehensive 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": 26,
      "start_date": "2017-08-03",
      "completion_date": "2023-10-24",
      "has_results": false,
      "last_update_posted_date": "2024-03-18",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03126331"
    },
    {
      "nct_id": "NCT02036931",
      "title": "A Multicentre Observational Study to Evaluate Clinical Outcomes of the G7 Acetabular System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Noninflammatory Degenerative Joint Disease",
        "Rheumatoid Arthritis"
      ],
      "interventions": [
        {
          "name": "Metal on Polyethylene articulation",
          "type": "DEVICE"
        },
        {
          "name": "Ceramic on Polyethylene articulation",
          "type": "DEVICE"
        },
        {
          "name": "Ceramic on Ceramic articulation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zimmer Biomet",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 162,
      "start_date": "2013-03",
      "completion_date": "2025-05",
      "has_results": true,
      "last_update_posted_date": "2025-12-19",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02036931"
    },
    {
      "nct_id": "NCT01772537",
      "title": "The Effects of Anesthesia on Patients Undergoing Surgery for Repair of a Thoracoabdominal Aneurysm.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Thoracic Aneurysm",
        "Aneurysm Stent",
        "Cardiopulmonary Bypass",
        "Abdominal Aneurysm"
      ],
      "interventions": [
        {
          "name": "Propofol",
          "type": "DRUG"
        },
        {
          "name": "isoflurane",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "21 Years to 100 Years"
      },
      "enrollment_count": 14,
      "start_date": "2012-05",
      "completion_date": "2014-02",
      "has_results": true,
      "last_update_posted_date": "2017-03-31",
      "last_synced_at": "2026-10-31T06:56:35.173Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01772537"
    }
  ]
}