{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Hemophilia+A+With+Inhibitor",
    "query": {
      "condition": "Hemophilia A With Inhibitor"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 28,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Hemophilia+A+With+Inhibitor&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T02:13:04.905Z",
  "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": "NCT05145127",
      "title": "Open-Label Extension Study of Marstacimab in Hemophilia Participants With or Without Inhibitors",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia A",
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "PF-06741086",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "74 Years",
        "sex": "MALE",
        "summary": "1 Year to 74 Years · Male only"
      },
      "enrollment_count": 245,
      "start_date": "2021-11-17",
      "completion_date": "2030-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-14",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 4,
      "location_summary": "Iowa City, Iowa • New Hyde Park, New York • Philadelphia, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "New Hyde Park",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05145127"
    },
    {
      "nct_id": "NCT04303559",
      "title": "The Hemophilia Inhibitor Prevention Trial",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia A Without Inhibitor"
      ],
      "interventions": [
        {
          "name": "Eloctate Injectable Product",
          "type": "DRUG"
        },
        {
          "name": "Emicizumab Injection [Hemlibra]",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Margaret Ragni",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Months",
        "maximum_age": "4 Years",
        "sex": "MALE",
        "summary": "4 Months to 4 Years · Male only"
      },
      "enrollment_count": 1,
      "start_date": "2021-10-11",
      "completion_date": "2022-06-16",
      "has_results": true,
      "last_update_posted_date": "2023-04-11",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 3,
      "location_summary": "Little Rock, Arkansas • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04303559"
    },
    {
      "nct_id": "NCT00621673",
      "title": "Assessment of the Risk of Inhibitor Formation in Previously Treated Patients With Severe Hemophilia A",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hemophilia A"
      ],
      "interventions": [
        {
          "name": "Kogenate (BAY 14-2222)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "60 Years",
        "sex": "MALE",
        "summary": "12 Years to 60 Years · Male only"
      },
      "enrollment_count": 1,
      "start_date": "2006-05",
      "completion_date": "2006-10",
      "has_results": false,
      "last_update_posted_date": "2014-12-18",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 2,
      "location_summary": "Detroit, Michigan • Las Vegas, Nevada",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00621673"
    },
    {
      "nct_id": "NCT07158606",
      "title": "Understanding Treatment Outcomes and Immunologic Mechanisms in Altuviiio Immune Tolerance Induction",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hemophilia A With Inhibitor"
      ],
      "interventions": [
        {
          "name": "efanesoctacog alpha",
          "type": "DRUG"
        },
        {
          "name": "Emicizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Versiti Blood Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "0 Years to 17 Years"
      },
      "enrollment_count": 15,
      "start_date": "2025-10-01",
      "completion_date": "2032-08-31",
      "has_results": false,
      "last_update_posted_date": "2025-09-08",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07158606"
    },
    {
      "nct_id": "NCT04489537",
      "title": "Study of Coagulation Factor VIIa Marzeptacog Alfa (Activated) in Subjects With Hemophilia A or B",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia A With Inhibitor",
        "Hemophilia B With Inhibitor"
      ],
      "interventions": [
        {
          "name": "MarzAA",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Catalyst Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2021-05-04",
      "completion_date": "2021-12-01",
      "has_results": false,
      "last_update_posted_date": "2021-12-17",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 2,
      "location_summary": "Phoenix, Arizona • Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04489537"
    },
    {
      "nct_id": "NCT01571934",
      "title": "Inhibitor Development in Patients With Hemophilia A Undergoing Surgery",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hemophilia A"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "MALE",
        "summary": "Male only"
      },
      "enrollment_count": 30,
      "start_date": "2011-11",
      "completion_date": "2016-03",
      "has_results": false,
      "last_update_posted_date": "2017-04-26",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 7,
      "location_summary": "Aurora, Colorado • Atlanta, Georgia • Indianapolis, Indiana + 4 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01571934"
    },
    {
      "nct_id": "NCT03938792",
      "title": "Study of the Efficacy and Safety PF-06741086 in Adult and Teenage Participants With Severe Hemophilia A or Moderately Severe to Severe Hemophilia B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia A",
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "PF-06741086",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "74 Years",
        "sex": "MALE",
        "summary": "12 Years to 74 Years · Male only"
      },
      "enrollment_count": 189,
      "start_date": "2020-03-09",
      "completion_date": "2025-04-29",
      "has_results": false,
      "last_update_posted_date": "2025-06-10",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 4,
      "location_summary": "Tampa, Florida • Iowa City, Iowa • New Hyde Park, New York + 1 more",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "New Hyde Park",
          "state": "New York"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03938792"
    },
    {
      "nct_id": "NCT01625390",
      "title": "A Phase 2/ 3 Trial to Evaluate the Efficacy and Safety of BAY86-6150",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia A, Hemophilia B"
      ],
      "interventions": [
        {
          "name": "BAY86-6150",
          "type": "DRUG"
        },
        {
          "name": "eptacog alfa [activated]",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "62 Years",
        "sex": "MALE",
        "summary": "12 Years to 62 Years · Male only"
      },
      "enrollment_count": 10,
      "start_date": "2012-06",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2015-07-01",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 2,
      "location_summary": "Sacramento, California • Chattanooga, Tennessee",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Chattanooga",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01625390"
    },
    {
      "nct_id": "NCT04548791",
      "title": "Study of Coagulation Factor VIIa Marzeptacog Alfa (Activated) in Subjects With Inherited Bleeding Disorders",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Factor VII Deficiency",
        "Glanzmann Thrombasthenia",
        "Hemophilia A With Inhibitor"
      ],
      "interventions": [
        {
          "name": "Coagulation Factor VIIa variant",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Catalyst Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2021-05-17",
      "completion_date": "2021-12-03",
      "has_results": false,
      "last_update_posted_date": "2021-12-21",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 7,
      "location_summary": "Sacramento, California • San Francisco, California • Aurora, Colorado + 4 more",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04548791"
    },
    {
      "nct_id": "NCT03619863",
      "title": "ATHN 7: Hemophilia Natural History Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hemophilia A With Inhibitor",
        "Haemophilia A Without Inhibitor",
        "Hemophilia B With Inhibitor",
        "Haemophilia B Without Inhibitor"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "American Thrombosis and Hemostasis Network",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 395,
      "start_date": "2018-10-24",
      "completion_date": "2024-03-31",
      "has_results": false,
      "last_update_posted_date": "2025-02-12",
      "last_synced_at": "2026-05-22T02:13:04.905Z",
      "location_count": 29,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • San Diego, California + 23 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03619863"
    }
  ]
}