{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Granulomatosis+With+Polyangiitis+%28GPA%29",
    "query": {
      "condition": "Granulomatosis With Polyangiitis (GPA)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 64,
    "total_pages": 7,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Granulomatosis+With+Polyangiitis+%28GPA%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T04:16:04.034Z",
  "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": "NCT01613599",
      "title": "An Observational Study of The Safety of MabThera/Rituxan (Rituximab) in Participants With Granulomatosis With Polyangiitis (Wegener's) or Microscopic Polyangiitis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Granulomatosis With Polyangiitis",
        "Microscopic Polyangiitis"
      ],
      "interventions": [
        {
          "name": "Rituximab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Genentech, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2012-06-20",
      "completion_date": "2017-04-28",
      "has_results": true,
      "last_update_posted_date": "2018-07-26",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 15,
      "location_summary": "Scottsdale, Arizona • Los Angeles, California • Jacksonville, Florida + 11 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01613599"
    },
    {
      "nct_id": "NCT02190929",
      "title": "Educational Needs of Patients With Systemic Vasculitis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Behcet's Disease",
        "Churg-Strauss Syndrome",
        "Vasculitis, Central Nervous System",
        "Giant Cell Arteritis",
        "Wegener Granulomatosis",
        "Henoch-Schoenlein Purpura",
        "Microscopic Polyangiitis",
        "Polyarteritis Nodosa",
        "Takayasu's Arteritis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 386,
      "start_date": "2012-03",
      "completion_date": "2014-02",
      "has_results": false,
      "last_update_posted_date": "2014-07-15",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02190929"
    },
    {
      "nct_id": "NCT00315380",
      "title": "Longitudinal Study for Eosinophilic Granulomatosis With Polyangiitis",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Eosinophilic Granulomatosis With Polyangiitis",
        "Churg-Strauss Syndrome"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 700,
      "start_date": "2006-04",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-01-23",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 8,
      "location_summary": "San Diego, California • Denver, Colorado • Boston, Massachusetts + 5 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00315380"
    },
    {
      "nct_id": "NCT03182049",
      "title": "Natural History of Granulomatosis With Polyangiitis: Clinical and Genetic Biomarkers of Airway Disease NoAAC PR-03 Study",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Granulomatosis With Polyangiitis"
      ],
      "interventions": [
        {
          "name": "Airway assessment",
          "type": "PROCEDURE"
        },
        {
          "name": "Rheumatology assessment",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-12",
      "completion_date": "2023-05",
      "has_results": false,
      "last_update_posted_date": "2020-08-25",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03182049"
    },
    {
      "nct_id": "NCT00104299",
      "title": "Rituximab for the Treatment of Wegener's Granulomatosis and Microscopic Polyangiitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Vasculitis",
        "Wegener's Granulomatosis",
        "Microscopic Polyangiitis"
      ],
      "interventions": [
        {
          "name": "Rituximab plus cyclophosphamide placebo (rituximab group)",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide plus rituximab placebo (control group)",
          "type": "DRUG"
        },
        {
          "name": "Azathioprine",
          "type": "DRUG"
        },
        {
          "name": "Methylprednisolone (or other glucocorticoid)",
          "type": "DRUG"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "15 Years and older"
      },
      "enrollment_count": 197,
      "start_date": "2005-01",
      "completion_date": "2010-01",
      "has_results": true,
      "last_update_posted_date": "2017-04-21",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 7,
      "location_summary": "Birmingham, Alabama • Baltimore, Maryland • Boston, Massachusetts + 4 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00104299"
    },
    {
      "nct_id": "NCT03482479",
      "title": "Low Dose Naltrexone to Improve Physical Health in Patients With Vasculitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Eosinophilic Granulomatosis With Polyangiitis (EGPA)",
        "Churg-Strauss Syndrome (CSS)",
        "Giant Cell Arteritis",
        "Granulomatosis With Polyangiitis",
        "Microscopic Polyangiitis",
        "Polyarteritis Nodosa",
        "Takayasu Arteritis"
      ],
      "interventions": [
        {
          "name": "Naltrexone Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Placebo Comparator",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2019-02-04",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-22",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 6,
      "location_summary": "Boston, Massachusetts • Rochester, Minnesota • Cleveland, Ohio + 3 more",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03482479"
    },
    {
      "nct_id": "NCT00072592",
      "title": "An Open Label Pilot Study Examining the Use of Rituximab in Patients With Wegener's Granulomatosis Who Have Experienced Disease Relapse on Standard Therapies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Wegener's Granulomatosis"
      ],
      "interventions": [
        {
          "name": "Rituximab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 10,
      "start_date": "2003-10",
      "completion_date": "2005-08",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00072592"
    },
    {
      "nct_id": "NCT02476292",
      "title": "Impact of Vasculitis on Employment and Income",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vasculitis",
        "Systemic Vasculitis",
        "Behcet's Disease",
        "CNS Vasculitis",
        "Cryoglobulinemic Vasculitis",
        "Eosinophilic Granulomatosis",
        "Temporal Arteritis",
        "Wegener Granulomatosis",
        "Henoch-Schoenlein Purpura",
        "Microscopic Polyangiitis",
        "Polyarteritis Nodosa (PAN)",
        "Takayasu's Arteritis",
        "Urticarial Vasculitis"
      ],
      "interventions": [
        {
          "name": "online questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 426,
      "start_date": "2015-06",
      "completion_date": "2016-01",
      "has_results": false,
      "last_update_posted_date": "2016-01-28",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02476292"
    },
    {
      "nct_id": "NCT00001541",
      "title": "Analysis of Bronchial Tissue and Fluid in Patients With Wegener's Granulomatosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Inflammation",
        "Vasculitis",
        "Wegener's Granulomatosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 25,
      "start_date": "1996-04",
      "completion_date": "2003-01",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001541"
    },
    {
      "nct_id": "NCT00001256",
      "title": "Steroids and Methotrexate to Treat Systemic Vasculitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Inflammation",
        "Vasculitis",
        "Wegener's Granulomatosis"
      ],
      "interventions": [
        {
          "name": "prednisone and methotrexate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 100,
      "start_date": "1990-03",
      "completion_date": "2004-02",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-05-22T04:16:04.034Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001256"
    }
  ]
}