{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Factor+X+Deficiency&page=2",
    "query": {
      "condition": "Factor X Deficiency",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Factor+X+Deficiency&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T00:11:59.037Z",
  "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": "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": "2026-05-22T00:11:59.037Z",
      "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": "NCT02502409",
      "title": "Natural History Study of Factor IX Treatment and Complications",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Factor IX Deficiency"
      ],
      "interventions": [
        {
          "name": "Standard care with blood and urine sample collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Skane University Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 550,
      "start_date": "2015-07",
      "completion_date": "2021-12",
      "has_results": false,
      "last_update_posted_date": "2021-05-25",
      "last_synced_at": "2026-05-22T00:11:59.037Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02502409"
    },
    {
      "nct_id": "NCT04398628",
      "title": "ATHN Transcends: A Natural History Study of Non-Neoplastic Hematologic Disorders",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hematologic Disorder",
        "Bleeding Disorder",
        "Connective Tissue Disorder",
        "Hemophilia",
        "Thrombosis",
        "Von Willebrand Diseases",
        "Thrombophilia",
        "Rare Bleeding Disorder",
        "Platelet Disorder",
        "Factor IX Deficiency",
        "Factor VIII Deficiency",
        "Thalassemia",
        "Sickle Cell Disease"
      ],
      "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": 3000,
      "start_date": "2020-09-30",
      "completion_date": "2035-12",
      "has_results": false,
      "last_update_posted_date": "2026-01-12",
      "last_synced_at": "2026-05-22T00:11:59.037Z",
      "location_count": 71,
      "location_summary": "Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 59 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04398628"
    },
    {
      "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": "2026-05-22T00:11:59.037Z",
      "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": "NCT01620801",
      "title": "Hemophilia B Gene Therapy With AAV8 Vector",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "AAV8-hFIX19",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Spark Therapeutics, Inc.",
      "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": 4,
      "start_date": "2012-10",
      "completion_date": "2016-03",
      "has_results": false,
      "last_update_posted_date": "2019-03-12",
      "last_synced_at": "2026-05-22T00:11:59.037Z",
      "location_count": 2,
      "location_summary": "Philadelphia, Pennsylvania • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01620801"
    },
    {
      "nct_id": "NCT03003533",
      "title": "A Gene Transfer Study for Hemophilia A",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Hemophilia A"
      ],
      "interventions": [
        {
          "name": "SPK-8011",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "Spark Therapeutics, Inc.",
      "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": 25,
      "start_date": "2017-01-26",
      "completion_date": "2023-12-05",
      "has_results": true,
      "last_update_posted_date": "2024-12-30",
      "last_synced_at": "2026-05-22T00:11:59.037Z",
      "location_count": 11,
      "location_summary": "Sacramento, California • Gainesville, Florida • Boston, Massachusetts + 7 more",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Madison",
          "state": "Mississippi"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03003533"
    },
    {
      "nct_id": "NCT07414511",
      "title": "Hemophilia A Research Program",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hemophilia A",
        "Hemophilia A, Severe",
        "Factor VIII (FVIII)",
        "FVIII Deficiency",
        "Carrier of Hemophilia A",
        "Inhibitors",
        "Pregnancy",
        "Maternal Blood Loss",
        "Pregnancy Complications",
        "Bleeding Disorder",
        "Hemorrhage, Postpartum",
        "Alloimmunization",
        "X-Linked"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 500,
      "start_date": "2024-07-31",
      "completion_date": "2029-08",
      "has_results": false,
      "last_update_posted_date": "2026-02-17",
      "last_synced_at": "2026-05-22T00:11:59.037Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07414511"
    },
    {
      "nct_id": "NCT06014320",
      "title": "Alterations in Coagulation Factor Levels in Patients With End Stage Liver Disease",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Liver Cirrhosis",
        "Hemophilia",
        "Hemophilia A",
        "Hemophilia B",
        "Liver Transplant Disorder",
        "Liver Failure",
        "Coagulation Factor Deficiency"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2023-10-01",
      "completion_date": "2024-10-01",
      "has_results": false,
      "last_update_posted_date": "2023-08-28",
      "last_synced_at": "2026-05-22T00:11:59.037Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06014320"
    },
    {
      "nct_id": "NCT03651505",
      "title": "X-linked Hypophosphatemia Disease Monitoring Program",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "X-linked Hypophosphatemia",
        "Hypophosphatemic Rickets"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ultragenyx Pharmaceutical Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 782,
      "start_date": "2018-07-16",
      "completion_date": "2032-12",
      "has_results": false,
      "last_update_posted_date": "2026-02-17",
      "last_synced_at": "2026-05-22T00:11:59.037Z",
      "location_count": 24,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • San Diego, California + 18 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03651505"
    },
    {
      "nct_id": "NCT01687608",
      "title": "Open-Label Single Ascending Dose of Adeno-associated Virus Serotype 8 Factor IX Gene Therapy in Adults With Hemophilia B",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Hemophilia B"
      ],
      "interventions": [
        {
          "name": "AskBio009",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Baxalta now part of Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "18 Years to 75 Years · Male only"
      },
      "enrollment_count": 30,
      "start_date": "2013-02-11",
      "completion_date": "2030-01-17",
      "has_results": false,
      "last_update_posted_date": "2026-03-20",
      "last_synced_at": "2026-05-22T00:11:59.037Z",
      "location_count": 15,
      "location_summary": "Los Angeles, California • Sacramento, California • San Diego, California + 11 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01687608"
    }
  ]
}