{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Niraparib+300+mg",
    "query": {
      "intervention": "Niraparib 300 mg"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 24,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Niraparib+300+mg&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T20:25:32.141Z",
  "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": "NCT02854436",
      "title": "An Efficacy and Safety Study of Niraparib in Men With Metastatic Castration-Resistant Prostate Cancer and DNA-Repair Anomalies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostatic Neoplasms"
      ],
      "interventions": [
        {
          "name": "Niraparib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "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": 289,
      "start_date": "2016-08-31",
      "completion_date": "2023-08-16",
      "has_results": true,
      "last_update_posted_date": "2025-12-22",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 23,
      "location_summary": "Tucson, Arizona • Los Angeles, California • Riverside, California + 20 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02854436"
    },
    {
      "nct_id": "NCT03574779",
      "title": "A Study to Evaluate the Efficacy and Safety of Novel Treatment Combinations in Participants With Ovarian Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ovarian Neoplasms"
      ],
      "interventions": [
        {
          "name": "Niraparib",
          "type": "DRUG"
        },
        {
          "name": "TSR-042",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Bevacizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Paclitaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Tesaro, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 77,
      "start_date": "2018-11-15",
      "completion_date": "2025-03-31",
      "has_results": true,
      "last_update_posted_date": "2025-07-15",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 19,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • San Francisco, California + 15 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Ventura",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03574779"
    },
    {
      "nct_id": "NCT03207347",
      "title": "A Trial of Niraparib in BAP1 and Other DNA Damage Response (DDR) Deficient Neoplasms (UF-STO-ETI-001)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Mesothelioma",
        "Uveal Melanoma",
        "Renal Cell Carcinoma",
        "Cholangiocarcinoma"
      ],
      "interventions": [
        {
          "name": "Niraparib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 37,
      "start_date": "2018-08-13",
      "completion_date": "2022-08-30",
      "has_results": true,
      "last_update_posted_date": "2023-09-15",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 3,
      "location_summary": "Gainesville, Florida • Miami, Florida • Orlando, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03207347"
    },
    {
      "nct_id": "NCT03326193",
      "title": "A Study of Niraparib Combined With Bevacizumab Maintenance Treatment in Participants With Advanced Ovarian Cancer Following Response on Front-Line Platinum-Based Chemotherapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ovarian Neoplasms"
      ],
      "interventions": [
        {
          "name": "Niraparib",
          "type": "DRUG"
        },
        {
          "name": "Bevacizumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Tesaro, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 105,
      "start_date": "2017-12-12",
      "completion_date": "2024-07-12",
      "has_results": true,
      "last_update_posted_date": "2025-07-31",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 29,
      "location_summary": "Mobile, Alabama • Anchorage, Alaska • Mesa, Arizona + 25 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Burbank",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03326193"
    },
    {
      "nct_id": "NCT01905592",
      "title": "A Phase III Trial of Niraparib Versus Physician's Choice in HER2 Negative, Germline BRCA Mutation-positive Breast Cancer Patients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Neoplasms, Breast",
        "Carcinoma of Breast",
        "Human Epidermal Growth Factor 2 Negative Carcinoma of Breast",
        "BRCA1 Gene Mutation",
        "BRCA2 Gene Mutation",
        "Ovarian Neoplasms"
      ],
      "interventions": [
        {
          "name": "niraparib",
          "type": "DRUG"
        },
        {
          "name": "Physician's choice",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tesaro, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 216,
      "start_date": "2014-02-25",
      "completion_date": "2021-10-26",
      "has_results": true,
      "last_update_posted_date": "2022-11-15",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 25,
      "location_summary": "Tucson, Arizona • Los Angeles, California • Fort Myers, Florida + 20 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Fort Myers",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01905592"
    },
    {
      "nct_id": "NCT03154281",
      "title": "Evaluation of the Safety and Tolerability of Niraparib With Everolimus in Advanced Gynecologic Malignancies and Breast",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Cancer",
        "Ovarian Cancer"
      ],
      "interventions": [
        {
          "name": "niraparib",
          "type": "DRUG"
        },
        {
          "name": "everolimus",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Avera McKennan Hospital & University Health Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2017-07-26",
      "completion_date": "2023-05-01",
      "has_results": true,
      "last_update_posted_date": "2024-08-01",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 1,
      "location_summary": "Sioux Falls, South Dakota",
      "locations": [
        {
          "city": "Sioux Falls",
          "state": "South Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03154281"
    },
    {
      "nct_id": "NCT03307785",
      "title": "Study of Niraparib, TSR-022, Bevacizumab, and Platinum-Based Doublet Chemotherapy in Combination With TSR-042",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Neoplasms",
        "Metastatic Cancer",
        "Advanced Cancer",
        "Solid Tumor",
        "Non Small Cell Lung Cancer Metastatic",
        "Non Small Cell Lung Cancer Stage IIIB",
        "Non Small Cell Lung Cancer"
      ],
      "interventions": [
        {
          "name": "Niraparib",
          "type": "DRUG"
        },
        {
          "name": "TSR-042",
          "type": "DRUG"
        },
        {
          "name": "Carboplatin-Paclitaxel",
          "type": "DRUG"
        },
        {
          "name": "Bevacizumab",
          "type": "DRUG"
        },
        {
          "name": "TSR-022",
          "type": "DRUG"
        },
        {
          "name": "Carboplatin-Pemetrexed",
          "type": "DRUG"
        },
        {
          "name": "Carboplatin-Nab-Paclitaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tesaro, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2017-10-12",
      "completion_date": "2024-12-11",
      "has_results": true,
      "last_update_posted_date": "2025-11-25",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 8,
      "location_summary": "Scottsdale, Arizona • Encinitas, California • San Marcos, California + 5 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Encinitas",
          "state": "California"
        },
        {
          "city": "San Marcos",
          "state": "California"
        },
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "Canton",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03307785"
    },
    {
      "nct_id": "NCT05526989",
      "title": "Study of the Combination Dostarlimab With Niraparib In Patients With Penile Carcinoma",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Penile Carcinoma"
      ],
      "interventions": [
        {
          "name": "Dostarlimab",
          "type": "DRUG"
        },
        {
          "name": "Niraparib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "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": 25,
      "start_date": "2022-12-28",
      "completion_date": "2027-11",
      "has_results": false,
      "last_update_posted_date": "2025-12-04",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 2,
      "location_summary": "Tampa, Florida • Houston, Texas",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05526989"
    },
    {
      "nct_id": "NCT05297864",
      "title": "PARP Inhibition for Gliomas (PI-4G or π4g)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Recurrent Glioblastoma",
        "Recurrent Astrocytoma",
        "Recurrent Oligodendroglioma",
        "Recurrent Glioma"
      ],
      "interventions": [
        {
          "name": "Niraparib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Oklahoma",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2022-06-09",
      "completion_date": "2024-02-06",
      "has_results": true,
      "last_update_posted_date": "2025-05-23",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 1,
      "location_summary": "Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05297864"
    },
    {
      "nct_id": "NCT03983993",
      "title": "Niraparib and Panitumumab in Patients With Advanced or Metastatic Colorectal Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Advanced Microsatellite Stable Colorectal Carcinoma",
        "Metastatic Microsatellite Stable Colorectal Carcinoma",
        "Microsatellite Stable",
        "RAS Wild Type",
        "Stage IV Colorectal Cancer AJCC v8",
        "MSI-H Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Niraparib",
          "type": "DRUG"
        },
        {
          "name": "Panitumumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 26,
      "start_date": "2019-10-15",
      "completion_date": "2026-12-01",
      "has_results": true,
      "last_update_posted_date": "2026-01-05",
      "last_synced_at": "2026-09-25T20:25:32.141Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03983993"
    }
  ]
}