{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Registry+study&page=3",
    "query": {
      "intervention": "Registry study",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 785,
    "total_pages": 79,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Registry+study&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Registry+study&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-30T11:50:35.950Z",
  "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": "NCT06463704",
      "title": "General Pre-Trial Screening Protocol for Infectious Diseases Research",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "There is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Beth Israel Deaconess Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 250,
      "start_date": "2024-06-21",
      "completion_date": "2034-06",
      "has_results": false,
      "last_update_posted_date": "2026-04-08",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06463704"
    },
    {
      "nct_id": "NCT04573634",
      "title": "A Registry Study of COVID-19 Serologic and Virologic Testing to Accelerate Recovery and Transition",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19",
        "SARS-CoV Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Jill M Kolesar",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-05-15",
      "completion_date": "2023-12-31",
      "has_results": false,
      "last_update_posted_date": "2022-09-14",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04573634"
    },
    {
      "nct_id": "NCT05965999",
      "title": "Lucid Registry Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Barrett Esophagus",
        "Esophageal Adenocarcinoma",
        "Barretts Esophagus With Dysplasia",
        "Barrett's Esophagus Without Dysplasia"
      ],
      "interventions": [
        {
          "name": "EsoCheck®",
          "type": "DEVICE"
        },
        {
          "name": "EsoGuard®",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Lucid Diagnostics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 8000,
      "start_date": "2023-04-11",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-09-28",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 1,
      "location_summary": "Lake Forest, California",
      "locations": [
        {
          "city": "Lake Forest",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05965999"
    },
    {
      "nct_id": "NCT02089555",
      "title": "African American Alzheimer's Progression Markers - CSF and Neuro-Imaging",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mild Cognitive Impairment",
        "Alzheimer's Disease"
      ],
      "interventions": [
        {
          "name": "Lumbar puncture",
          "type": "PROCEDURE"
        },
        {
          "name": "Blood draw",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging (MRI)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "60 Years to 85 Years"
      },
      "enrollment_count": 135,
      "start_date": "2013-09",
      "completion_date": "2016-06",
      "has_results": false,
      "last_update_posted_date": "2016-06-23",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02089555"
    },
    {
      "nct_id": "NCT04569734",
      "title": "The ICE WATCHMAN Trial",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Left Atrial Appendage Closure With WATCHMAN Device Utilizing an Intra-procedural ICE Probe"
      ],
      "interventions": [
        {
          "name": "WATCHMAN device implant procedure utilizing ICE probe",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "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": 101,
      "start_date": "2020-09-22",
      "completion_date": "2023-12-15",
      "has_results": false,
      "last_update_posted_date": "2023-12-27",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 2,
      "location_summary": "Santa Monica, California • Rochester, Minnesota",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04569734"
    },
    {
      "nct_id": "NCT04629716",
      "title": "Reactions of Older Adults Driving After Cannabis Exposure",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Pain"
      ],
      "interventions": [
        {
          "name": "Medical Cannabis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Florida State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 44,
      "start_date": "2021-04-23",
      "completion_date": "2023-08-31",
      "has_results": true,
      "last_update_posted_date": "2025-03-24",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04629716"
    },
    {
      "nct_id": "NCT03399981",
      "title": "Tysabri Observational Cohort Study - Multiple Sclerosis (MS) Registries",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Progressive Multifocal Leukoencephalopathy"
      ],
      "interventions": [
        {
          "name": "Tysabri",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 80327,
      "start_date": "2017-06-01",
      "completion_date": "2023-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-03-19",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 1,
      "location_summary": "Cambridge, Massachusetts",
      "locations": [
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03399981"
    },
    {
      "nct_id": "NCT05634967",
      "title": "Kesimpta (Ofatumumab) Pregnancy Registry",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis",
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "Kesimpta",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 725,
      "start_date": "2023-01-05",
      "completion_date": "2033-02-28",
      "has_results": false,
      "last_update_posted_date": "2025-01-14",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05634967"
    },
    {
      "nct_id": "NCT02513264",
      "title": "Registry for Asthma Characterization and Recruitment 2",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "1 Year to 55 Years"
      },
      "enrollment_count": 1384,
      "start_date": "2015-04-14",
      "completion_date": "2020-03-13",
      "has_results": false,
      "last_update_posted_date": "2021-01-25",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 10,
      "location_summary": "Aurora, Colorado • Washington D.C., District of Columbia • Chicago, Illinois + 7 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02513264"
    },
    {
      "nct_id": "NCT00604552",
      "title": "AneuRx Post Market Study in the Treatment of AAA",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Abdominal Aneurysm"
      ],
      "interventions": [
        {
          "name": "AneuRx Stent Graft",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medtronic Cardiovascular",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 349,
      "start_date": "2003-07",
      "completion_date": "2009-02",
      "has_results": true,
      "last_update_posted_date": "2021-10-29",
      "last_synced_at": "2026-10-30T11:50:35.950Z",
      "location_count": 8,
      "location_summary": "Tucson, Arizona • Royal Oak, Michigan • Morristown, New Jersey + 5 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Royal Oak",
          "state": "Michigan"
        },
        {
          "city": "Morristown",
          "state": "New Jersey"
        },
        {
          "city": "Asheville",
          "state": "North Carolina"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00604552"
    }
  ]
}