{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?sponsor=Fusion+Pharmaceuticals+Inc.",
    "query": {
      "sponsor": "Fusion Pharmaceuticals Inc."
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T19:34:02.662Z",
  "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": "NCT05363605",
      "title": "A Study of [225Ac]-FPI-1966 in Participants With Advanced Solid Tumours",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Advanced Solid Tumor",
        "Head and Neck Squamous Cell Carcinoma",
        "Bladder Carcinoma",
        "Susceptible FGFR3 Genetic Alterations",
        "FGFR3",
        "FGFR3 Overexpression",
        "FGFR3 Receptor",
        "FGFR3 Protein Overexpression",
        "Ovarian Cancer",
        "Colorectal Cancer",
        "Breast Cancer",
        "Liver Cancer",
        "Lung Cancer",
        "Gastric Cancer"
      ],
      "interventions": [
        {
          "name": "[225Ac]-FPI-1966",
          "type": "DRUG"
        },
        {
          "name": "[111In]-FPI-1967",
          "type": "DRUG"
        },
        {
          "name": "vofatamab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Fusion Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6,
      "start_date": "2022-04-20",
      "completion_date": "2023-09-08",
      "has_results": false,
      "last_update_posted_date": "2023-12-19",
      "last_synced_at": "2026-10-06T19:34:02.662Z",
      "location_count": 4,
      "location_summary": "Duarte, California • San Francisco, California • Iowa City, Iowa + 1 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05363605"
    },
    {
      "nct_id": "NCT05219500",
      "title": "Targeted Alpha Therapy With 225Actinium-Prostate Specific Membrane Antigen (PSMA)-I&T of Castration-resISTant Prostate Cancer (TATCIST).",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Castration Resistant Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "FPI-2265",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Fusion Pharmaceuticals 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": 115,
      "start_date": "2021-12-16",
      "completion_date": "2026-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-03",
      "last_synced_at": "2026-10-06T19:34:02.662Z",
      "location_count": 2,
      "location_summary": "Omaha, Nebraska • Houston, Texas",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05219500"
    },
    {
      "nct_id": "NCT03746431",
      "title": "A Phase 1 Study of [225Ac]-FPI-1434 Injection",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Advanced Solid Tumours",
        "Endometrial Cancer",
        "Cervical Cancer",
        "Ovarian Cancer",
        "Breast Cancer",
        "Triple Negative Breast Cancer (TNBC)",
        "HER2-negative Breast Cancer",
        "Head and Neck Squamous Cell Carcinoma (HNSCC)",
        "Adrenocortical Carcinoma",
        "Uveal Melanoma"
      ],
      "interventions": [
        {
          "name": "[111In]-FPI-1547 Injection",
          "type": "DRUG"
        },
        {
          "name": "[225Ac]-FPI-1434 Injection multi-dose",
          "type": "DRUG"
        },
        {
          "name": "FPI-1175 Infusion",
          "type": "BIOLOGICAL"
        },
        {
          "name": "[225Ac]-FPI-1434 Injection single-dose",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Fusion Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 78,
      "start_date": "2019-01-17",
      "completion_date": "2025-12-03",
      "has_results": false,
      "last_update_posted_date": "2026-01-07",
      "last_synced_at": "2026-10-06T19:34:02.662Z",
      "location_count": 7,
      "location_summary": "Duarte, California • Boston, Massachusetts • Minneapolis, Minnesota + 4 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Buffalo",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03746431"
    },
    {
      "nct_id": "NCT06402331",
      "title": "FPI-2265 (225Ac-PSMA-I&T) for Patients With PSMA-Positive Metastatic Castration-Resistant Prostate Cancer (mCRPC)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Castration-resistant Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "FPI-2265",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Fusion Pharmaceuticals 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": 110,
      "start_date": "2024-03-05",
      "completion_date": "2031-01-23",
      "has_results": false,
      "last_update_posted_date": "2026-04-08",
      "last_synced_at": "2026-10-06T19:34:02.662Z",
      "location_count": 18,
      "location_summary": "Duarte, California • Irvine, California • Los Angeles, California + 12 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06402331"
    }
  ]
}