{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Antithrombin+III",
    "query": {
      "intervention": "Antithrombin III"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 23,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Antithrombin+III&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T14:15:29.483Z",
  "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": "NCT01598883",
      "title": "Understanding \"Heparin Resistance\" in Cardiac Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cardiopulmonary Bypass",
        "Altered Heparin Response"
      ],
      "interventions": [
        {
          "name": "Heparin",
          "type": "DRUG"
        },
        {
          "name": "ATryn",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 504,
      "start_date": "2012-06",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2016-12-14",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01598883"
    },
    {
      "nct_id": "NCT05064267",
      "title": "Hemostatic Profiles in Pediatric CKD",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Kidney Disease, Chronic",
        "Pediatric Kidney Disease",
        "Renal Insufficiency, Chronic",
        "Blood Coagulation Disorders in Children"
      ],
      "interventions": [
        {
          "name": "phlebotomy",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Children's Healthcare of Atlanta",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Months to 17 Years"
      },
      "enrollment_count": 8,
      "start_date": "2021-11-15",
      "completion_date": "2022-05-10",
      "has_results": false,
      "last_update_posted_date": "2023-09-21",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05064267"
    },
    {
      "nct_id": "NCT02037555",
      "title": "Safety and Efficacy of Preoperative Antithrombin Supplementation in Patients Undergoing High-Risk Cardiopulmonary Bypass",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cardiac Surgery",
        "Cardiopulmonary Bypass"
      ],
      "interventions": [
        {
          "name": "AT-III (Human)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Grifols Therapeutics LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 425,
      "start_date": "2014-06-26",
      "completion_date": "2018-01-25",
      "has_results": true,
      "last_update_posted_date": "2019-03-15",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 41,
      "location_summary": "Orange, California • San Francisco, California • Stanford, California + 36 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02037555"
    },
    {
      "nct_id": "NCT00842621",
      "title": "Long Term Effects of Erythrocyte Lysis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease",
        "Hemolytic Anemia"
      ],
      "interventions": [
        {
          "name": "Clinical Evaluations",
          "type": "PROCEDURE"
        },
        {
          "name": "Laboratory Studies",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "5 Years and older"
      },
      "enrollment_count": 390,
      "start_date": "2009-03",
      "completion_date": "2016-06",
      "has_results": false,
      "last_update_posted_date": "2016-06-27",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00842621"
    },
    {
      "nct_id": "NCT01547728",
      "title": "Response of Recombinant Antithrombin in Heparin Resistant Patients Undergoing Cardiac Surgery",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Thrombophilia Due to Acquired Antithrombin III Deficiency"
      ],
      "interventions": [
        {
          "name": "Recombinant antithrombin (rhAT)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "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": 42,
      "start_date": "2012-02",
      "completion_date": "2014-02",
      "has_results": true,
      "last_update_posted_date": "2015-07-15",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01547728"
    },
    {
      "nct_id": "NCT02059135",
      "title": "Pharmacokinetics, Safety and Efficacy Study of Recombinant Antithrombin Versus Placebo in Preterm Preeclampsia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Preeclampsia"
      ],
      "interventions": [
        {
          "name": "Recombinant human antithrombin (ATryn)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Normal Saline 0.9%",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "rEVO Biologics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "16 Years and older · Female only"
      },
      "enrollment_count": 120,
      "start_date": "2014-07-11",
      "completion_date": "2016-11",
      "has_results": true,
      "last_update_posted_date": "2017-08-09",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 23,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Little Rock, Arkansas + 19 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02059135"
    },
    {
      "nct_id": "NCT05662319",
      "title": "A Study to Test a Medicine (Fitusiran) Injected Under the Skin for Preventing Bleeding Episodes in Male Adolescent or Adult Participants With Severe Hemophilia",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia"
      ],
      "interventions": [
        {
          "name": "Fitusiran",
          "type": "DRUG"
        },
        {
          "name": "Clotting factor concentrates (CFC) or bypassing agents (BPA)",
          "type": "DRUG"
        },
        {
          "name": "Antithrombin concentrate (ATIIIC)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "12 Years and older · Male only"
      },
      "enrollment_count": 91,
      "start_date": "2023-02-01",
      "completion_date": "2029-01-25",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 8,
      "location_summary": "Orange, California • Minneapolis, Minnesota • Hackensack, New Jersey + 5 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Hackensack",
          "state": "New Jersey"
        },
        {
          "city": "New Hyde Park",
          "state": "New York"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05662319"
    },
    {
      "nct_id": "NCT06145373",
      "title": "A Study to Test a Medicine (Fitusiran) for Preventing Bleeds in People With Severe Hemophilia Who Previously Received Preventive Treatment With Emicizumab",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hemophilia A"
      ],
      "interventions": [
        {
          "name": "Fitusiran (SAR439774)",
          "type": "DRUG"
        },
        {
          "name": "Clotting factor concentrates (CFC) or bypassing agents (BPA)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Antithrombin concentrate (ATIIIC)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Emicizumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "12 Years and older · Male only"
      },
      "enrollment_count": 20,
      "start_date": "2024-03-01",
      "completion_date": "2030-01-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-02",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06145373"
    },
    {
      "nct_id": "NCT04380220",
      "title": "Coagulation/Complement Activation and Cerebral Hypoperfusion in Relapsing-remitting Multiple Sclerosis",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis",
        "Relapse"
      ],
      "interventions": [
        {
          "name": "Blood samples and processing",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Regina Elena Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 80,
      "start_date": "2017-09-07",
      "completion_date": "2020-12-31",
      "has_results": false,
      "last_update_posted_date": "2020-05-21",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04380220"
    },
    {
      "nct_id": "NCT04924322",
      "title": "Catheter-Related Early Thromboprophylaxis With Enoxaparin Studies",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Deep Venous Thrombosis"
      ],
      "interventions": [
        {
          "name": "Enoxaparin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "Up to 17 Years"
      },
      "enrollment_count": 258,
      "start_date": "2022-05-11",
      "completion_date": "2027-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-08",
      "last_synced_at": "2026-09-06T14:15:29.483Z",
      "location_count": 22,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Aurora, Colorado + 18 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04924322"
    }
  ]
}