{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=factor+IX",
    "query": {
      "intervention": "factor IX"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 113,
    "total_pages": 12,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=factor+IX&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T23:35:58.508Z",
  "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": "NCT06008938",
      "title": "An Observational Cohort Study to Characterize the Effectiveness and Safety of HEMGENIX® in Patients With Hemophilia B",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "HEMGENIX",
          "type": "GENETIC"
        },
        {
          "name": "Factor IX (FIX)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "BIOLOGICAL"
      ],
      "sponsor": "CSL Behring",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2023-06-15",
      "completion_date": "2043-08-01",
      "has_results": false,
      "last_update_posted_date": "2026-02-19",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06008938"
    },
    {
      "nct_id": "NCT06003387",
      "title": "Efficacy and Safety of CSL222 (Etranacogene Dezaparvovec) Gene Therapy in Adults With Hemophilia B With Pretreatment Adeno-associated Virus Serotype 5 (AAV5) Neutralizing Antibodies (Nabs)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "CSL222 (AAV5-hFIXco-Padua)",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "CSL Behring",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 35,
      "start_date": "2024-01-30",
      "completion_date": "2032-04-02",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 4,
      "location_summary": "San Diego, California • Ann Arbor, Michigan • Pittsburgh, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06003387"
    },
    {
      "nct_id": "NCT01757405",
      "title": "Recombinant Factor VIIa BI (rFVIIa BI) Treatment of Acute Bleeding Episodes Per an On-demand Regimen",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia A",
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "Recombinant Factor VIIa BI (rFVIIa BI)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Baxalta now part of Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "12 Years to 65 Years · Male only"
      },
      "enrollment_count": 40,
      "start_date": "2013-02-20",
      "completion_date": "2014-11-11",
      "has_results": true,
      "last_update_posted_date": "2021-05-11",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01757405"
    },
    {
      "nct_id": "NCT04567511",
      "title": "Hemlibra in Mild Hemophilia A",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Factor VIII Deficiency, Congenital"
      ],
      "interventions": [
        {
          "name": "Emicizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana Hemophilia &Thrombosis Center, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "45 Years",
        "sex": "MALE",
        "summary": "5 Years to 45 Years · Male only"
      },
      "enrollment_count": 20,
      "start_date": "2022-07-25",
      "completion_date": "2027-07",
      "has_results": false,
      "last_update_posted_date": "2024-03-15",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04567511"
    },
    {
      "nct_id": "NCT02484092",
      "title": "A Gene Therapy Study for Hemophilia B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "SPK-9001",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 15,
      "start_date": "2015-11-18",
      "completion_date": "2019-04-08",
      "has_results": true,
      "last_update_posted_date": "2020-06-16",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 9,
      "location_summary": "Sacramento, California • Jackson, Mississippi • Madison, Mississippi + 2 more",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02484092"
    },
    {
      "nct_id": "NCT02548143",
      "title": "LR769 in Congenital Hemophilia Patients With Inhibitors Undergoing Elective Surgery or Invasive Procedures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia"
      ],
      "interventions": [
        {
          "name": "Coagulation Factor VIIa (Recombinant)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Laboratoire français de Fractionnement et de Biotechnologies",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "6 Months to 75 Years · Male only"
      },
      "enrollment_count": 12,
      "start_date": "2016-08-25",
      "completion_date": "2017-08-31",
      "has_results": true,
      "last_update_posted_date": "2022-02-25",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02548143"
    },
    {
      "nct_id": "NCT00803101",
      "title": "An Open-label, Randomized, Multicenter Phase IIIb Study to Assess the Efficacy, Safety and Tolerance of BERIPLEX® P/N (Kcentra) Compared With Plasma for Rapid Reversal of Coagulopathy Induced by Vitamin K Antagonists in Subjects Requiring an Urgent Surgical Procedure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Reversal of Coagulopathy"
      ],
      "interventions": [
        {
          "name": "Beriplex® P/N (Kcentra)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fresh frozen plasma",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "CSL Behring",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 176,
      "start_date": "2009-02",
      "completion_date": "2013-02",
      "has_results": true,
      "last_update_posted_date": "2015-04-06",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 16,
      "location_summary": "Newark, Delaware • Lexington, Kentucky • Boston, Massachusetts + 13 more",
      "locations": [
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Duluth",
          "state": "Minnesota"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00803101"
    },
    {
      "nct_id": "NCT01440946",
      "title": "Study of Recombinant Coagulation Factor IX Fc Fusion Protein, BIIB029, in Previously Treated Pediatric Participants With Hemophilia B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "rFIXFc",
          "type": "DRUG"
        },
        {
          "name": "FIX",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bioverativ Therapeutics Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "11 Years",
        "sex": "MALE",
        "summary": "Up to 11 Years · Male only"
      },
      "enrollment_count": 30,
      "start_date": "2012-06",
      "completion_date": "2014-11",
      "has_results": true,
      "last_update_posted_date": "2020-12-19",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 7,
      "location_summary": "Phoenix, Arizona • Sacramento, California • Atlanta, Georgia + 4 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01440946"
    },
    {
      "nct_id": "NCT02190149",
      "title": "Study of Prophylaxis, ACtivity and Effectiveness (SPACE) in Hemophilia Patients Currently Treated With ADVATE or RIXUBIS",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hemophilia A",
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "ADVATE (Antihemophilic Factor [Recombinant])",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RIXUBIS (Coagulation Factor IX [Recombinant])",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Baxalta now part of Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "13 Years to 65 Years"
      },
      "enrollment_count": 64,
      "start_date": "2014-07-22",
      "completion_date": "2016-03-29",
      "has_results": false,
      "last_update_posted_date": "2021-03-17",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 17,
      "location_summary": "Los Angeles, California • San Diego, California • Aurora, Colorado + 14 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02190149"
    },
    {
      "nct_id": "NCT00979238",
      "title": "Dose-Escalation Study Of A Self Complementary Adeno-Associated Viral Vector For Gene Transfer in Hemophilia B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "Gene Transfer",
          "type": "GENETIC"
        },
        {
          "name": "scAAV2/8-LP1-hFIXco",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "DRUG"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 14,
      "start_date": "2010-02-22",
      "completion_date": "2026-03-26",
      "has_results": false,
      "last_update_posted_date": "2026-04-02",
      "last_synced_at": "2026-09-05T23:35:58.508Z",
      "location_count": 3,
      "location_summary": "Stanford, California • Memphis, Tennessee • Temple, Texas",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        },
        {
          "city": "Temple",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00979238"
    }
  ]
}