{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Congenital+Heart+Disease+With+Fontan+Circulation",
    "query": {
      "condition": "Congenital Heart Disease With Fontan Circulation"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T08:15:44.315Z",
  "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": "NCT04956952",
      "title": "Enhanced External Counterpulsation in Patients With Fontan Circulation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Single-ventricle",
        "Congenital Heart Disease"
      ],
      "interventions": [
        {
          "name": "EECP",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 23,
      "start_date": "2022-03-31",
      "completion_date": "2023-05-17",
      "has_results": false,
      "last_update_posted_date": "2023-06-13",
      "last_synced_at": "2026-05-22T08:15:44.315Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04956952"
    },
    {
      "nct_id": "NCT01815502",
      "title": "Study of Effects of Sildenafil on Patients With Fontan Heart Circulation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Single Ventricle Heart Disease After Fontan Surgery"
      ],
      "interventions": [
        {
          "name": "Cardiac catheterization",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "3 Years to 40 Years"
      },
      "enrollment_count": 20,
      "start_date": "2013-02",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2018-12-07",
      "last_synced_at": "2026-05-22T08:15:44.315Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01815502"
    },
    {
      "nct_id": "NCT03775421",
      "title": "An Upcoming Clinical Study to Measure the Safety and Impact of a Drug Called Macitentan in Teenage and Adult Fontan Patients.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Congenital Heart Disease With Fontan Circulation"
      ],
      "interventions": [
        {
          "name": "macitentan 10 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Actelion",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 112,
      "start_date": "2019-04-11",
      "completion_date": "2022-01-18",
      "has_results": true,
      "last_update_posted_date": "2023-03-07",
      "last_synced_at": "2026-05-22T08:15:44.315Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • Spokane, Washington",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03775421"
    },
    {
      "nct_id": "NCT07532369",
      "title": "Occlutech AFR Fontan Study",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Failure of Fontan Type Circulation",
        "Fenestration",
        "Univentricular Heart",
        "Congenital Anomaly"
      ],
      "interventions": [
        {
          "name": "Occlutech Atrial Flow Regulator Retrospective Data Collection",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Occlutech International AB",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 25,
      "start_date": "2026-05-01",
      "completion_date": "2026-09",
      "has_results": false,
      "last_update_posted_date": "2026-04-15",
      "last_synced_at": "2026-05-22T08:15:44.315Z",
      "location_count": 7,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • San Diego, California + 4 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07532369"
    },
    {
      "nct_id": "NCT06918795",
      "title": "Fontan Fitness Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Single-ventricle",
        "Congenital Heart Disease"
      ],
      "interventions": [
        {
          "name": "Digital Exercise Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "10 Years to 17 Years"
      },
      "enrollment_count": 200,
      "start_date": "2025-06-09",
      "completion_date": "2029-04",
      "has_results": false,
      "last_update_posted_date": "2026-04-13",
      "last_synced_at": "2026-05-22T08:15:44.315Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06918795"
    }
  ]
}