{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vertebral+Artery+Insufficiency",
    "query": {
      "condition": "Vertebral Artery Insufficiency"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 2,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T07:47:28.354Z",
  "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": "NCT03999983",
      "title": "Vertebral Artery Origin Treatment Via Endovascular Techniques Registry (VOTER)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vertebral Artery Stenosis"
      ],
      "interventions": [
        {
          "name": "Observational Prospective Registry",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "St. Louis University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 150,
      "start_date": "2019-11-19",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2025-02-12",
      "last_synced_at": "2026-05-22T07:47:28.354Z",
      "location_count": 10,
      "location_summary": "Jacksonville, Florida • Tampa, Florida • Winfield, Illinois + 7 more",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Winfield",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Bridgeton",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03999983"
    },
    {
      "nct_id": "NCT04054440",
      "title": "Outpatient Office Based Endovascular Procedures",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Venous Insufficiency",
        "Peripheral Arterial Disease",
        "Dialysis Access Malfunction",
        "Arterio-venous Fistula",
        "Thoracic Outlet Syndrome",
        "Vertebral Artery Insufficiency",
        "Varicose Veins"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Methodist Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 26000,
      "start_date": "2014-06-20",
      "completion_date": "2024-05-17",
      "has_results": false,
      "last_update_posted_date": "2026-03-24",
      "last_synced_at": "2026-05-22T07:47:28.354Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04054440"
    }
  ]
}