{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+data+collection&page=12",
    "query": {
      "intervention": "Observational data collection",
      "page": 12
    },
    "page_size": 10
  },
  "pagination": {
    "page": 12,
    "page_size": 10,
    "total_count": 331,
    "total_pages": 34,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+data+collection&page=13&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+data+collection&page=11&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-09T06:12:39.632Z",
  "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": "NCT01485016",
      "title": "Physiological and Biomechanical Data Collection Study in Epilepsy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Epilepsy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Cyberonics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2011-11",
      "completion_date": "2012-07",
      "has_results": false,
      "last_update_posted_date": "2012-08-21",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01485016"
    },
    {
      "nct_id": "NCT03734393",
      "title": "HOPE in Action Trial of HIV+ Deceased Donor Liver Transplants for HIV+ Recipients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hiv"
      ],
      "interventions": [
        {
          "name": "HIVD+/R+",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2019-01-04",
      "completion_date": "2025-07-04",
      "has_results": false,
      "last_update_posted_date": "2026-07-20",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 26,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • San Diego, California + 17 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03734393"
    },
    {
      "nct_id": "NCT07598058",
      "title": "PPDTM CorEvitasTM Chronic Hand Eczema (CHE) Drug Safety and Effectiveness Registry",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Hand Eczema"
      ],
      "interventions": [
        {
          "name": "Observational (Non-Interventional) Registry",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "CorEvitas",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2000,
      "start_date": "2026-07-21",
      "completion_date": "2099-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-26",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 1,
      "location_summary": "Waltham, Massachusetts",
      "locations": [
        {
          "city": "Waltham",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07598058"
    },
    {
      "nct_id": "NCT05438485",
      "title": "Natural History Study of Patients With Methylmalonic Acidemia and Propionic Acidemia",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Methylmalonic Acidemia",
        "Propionic Acidemia"
      ],
      "interventions": [
        {
          "name": "Registry",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "HemoShear Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 11,
      "start_date": "2021-08-27",
      "completion_date": "2023-10-20",
      "has_results": false,
      "last_update_posted_date": "2023-12-27",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05438485"
    },
    {
      "nct_id": "NCT04264702",
      "title": "BESPOKE Study of ctDNA Guided Therapy in Colorectal Cancer",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colorectal Cancer",
        "Colon Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Natera, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1788,
      "start_date": "2020-04-24",
      "completion_date": "2025-09",
      "has_results": false,
      "last_update_posted_date": "2023-12-12",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 1,
      "location_summary": "San Carlos, California",
      "locations": [
        {
          "city": "San Carlos",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04264702"
    },
    {
      "nct_id": "NCT01153906",
      "title": "Post-marketing Safety Study of Autoimmune Diseases Following Cervarix® Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Infections, Papillomavirus"
      ],
      "interventions": [
        {
          "name": "Data collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "25 Years",
        "sex": "FEMALE",
        "summary": "9 Years to 25 Years · Female only"
      },
      "enrollment_count": 1516,
      "start_date": "2010-10",
      "completion_date": "2013-09",
      "has_results": false,
      "last_update_posted_date": "2014-12-02",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 1,
      "location_summary": "Wilmington, Delaware",
      "locations": [
        {
          "city": "Wilmington",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01153906"
    },
    {
      "nct_id": "NCT06176625",
      "title": "Sight and Hearing Investigation Into Effects on Delirium",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hearing Loss",
        "Hearing Loss, Age-Related",
        "Hearing Disability",
        "Delirium",
        "Delirium in Old Age",
        "Delirium of Mixed Origin",
        "Delirium With Dementia",
        "Delirium on Emergence",
        "Delirium, Cause Unknown",
        "Delirium Superimposed on Dementia",
        "Delirium Confusional State",
        "Delirium;Non Alcoholic",
        "Hearing Loss, Bilateral",
        "Hearing Loss, Sensorineural",
        "Hearing Loss, Functional",
        "Hearing Loss, High-Frequency",
        "Hearing"
      ],
      "interventions": [
        {
          "name": "Communication Signage",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Amplifier Use",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 1543,
      "start_date": "2023-01-11",
      "completion_date": "2023-12-15",
      "has_results": false,
      "last_update_posted_date": "2026-04-07",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06176625"
    },
    {
      "nct_id": "NCT04034992",
      "title": "A Study on Patients With Chronic Kidney Disease (CKD) to Assess Treatment Experience and Patterns, Effect of the Treatment, Patient Outcomes and Patient Quality of Life",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "130 Years",
        "sex": "ALL",
        "summary": "18 Years to 130 Years"
      },
      "enrollment_count": 1052,
      "start_date": "2019-09-11",
      "completion_date": "2023-06-30",
      "has_results": false,
      "last_update_posted_date": "2024-03-06",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 11,
      "location_summary": "Riverside, California • San Francisco, California • Sanford, Florida + 8 more",
      "locations": [
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Sanford",
          "state": "Florida"
        },
        {
          "city": "Sebring",
          "state": "Florida"
        },
        {
          "city": "Plymouth",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04034992"
    },
    {
      "nct_id": "NCT00503854",
      "title": "Fatigue and Symptom Burden in Low-Risk Cancer Patients Undergoing Treatment for Febrile Neutropenia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fatigue",
        "Febrile Neutropenia",
        "Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Questionnaire",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "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": 70,
      "start_date": "2007-05-31",
      "completion_date": "2018-04-05",
      "has_results": false,
      "last_update_posted_date": "2018-10-22",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00503854"
    },
    {
      "nct_id": "NCT02363595",
      "title": "Genomic Predictors of Papillary Microcarcinoma Disease Progression",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Papillary Microcarcinoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "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": 750,
      "start_date": "2014-12-31",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-11-09T06:12:39.632Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02363595"
    }
  ]
}