{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=ER-Negative+Breast+Cancer",
    "query": {
      "condition": "ER-Negative Breast Cancer"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 493,
    "total_pages": 50,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=ER-Negative+Breast+Cancer&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-21T22:12:00.456Z",
  "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": "NCT00938652",
      "title": "A Phase 3, Multi-Center Study of Gemcitabine/Carboplatin, With or Without BSI-201, in Patients With ER-, PR-, and Her2-Negative Metastatic Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "gemcitabine/carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Iniparib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "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": 519,
      "start_date": "2009-07",
      "completion_date": "2012-02",
      "has_results": false,
      "last_update_posted_date": "2013-09-19",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 102,
      "location_summary": "Birmingham, Alabama • Sedona, Arizona • Jonesboro, Arkansas + 98 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Sedona",
          "state": "Arizona"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Alhambra",
          "state": "California"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00938652"
    },
    {
      "nct_id": "NCT02941926",
      "title": "Study to Assess the Safety and Efficacy of Ribociclib (LEE011) in Combination With Letrozole for the Treatment of Men and Pre/Postmenopausal Women With HR+ HER2- aBC",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Ribociclib",
          "type": "DRUG"
        },
        {
          "name": "Letrozole",
          "type": "DRUG"
        },
        {
          "name": "Goserelin",
          "type": "DRUG"
        },
        {
          "name": "Leuprolide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3246,
      "start_date": "2016-11-30",
      "completion_date": "2022-11-09",
      "has_results": true,
      "last_update_posted_date": "2023-10-24",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 71,
      "location_summary": "Anchorage, Alaska • Chandler, Arizona • Phoenix, Arizona + 66 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02941926"
    },
    {
      "nct_id": "NCT01560416",
      "title": "Fulvestrant With or Without Ganetespib in HR+ Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Fulvestrant",
          "type": "DRUG"
        },
        {
          "name": "Ganetespib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Dana-Farber Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2012-06",
      "completion_date": "2016-06-26",
      "has_results": true,
      "last_update_posted_date": "2026-03-03",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 5,
      "location_summary": "Boston, Massachusetts • Concord, New Hampshire • Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Concord",
          "state": "New Hampshire"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01560416"
    },
    {
      "nct_id": "NCT06065748",
      "title": "A Study to Evaluate Efficacy and Safety of Giredestrant Compared With Fulvestrant (Plus a CDK4/6 Inhibitor), in Participants With ER-Positive, HER2-Negative Advanced Breast Cancer Resistant to Adjuvant Endocrine Therapy (pionERA Breast Cancer)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Estrogen Receptor-Positive, HER2-Negative Advanced Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Giredestrant",
          "type": "DRUG"
        },
        {
          "name": "Fulvestrant",
          "type": "DRUG"
        },
        {
          "name": "Abemaciclib",
          "type": "DRUG"
        },
        {
          "name": "Palbociclib",
          "type": "DRUG"
        },
        {
          "name": "Ribociclib",
          "type": "DRUG"
        },
        {
          "name": "LHRH Agonist",
          "type": "DRUG"
        },
        {
          "name": "FoundationOne Liquid CDx Assay (F1LCDx)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1050,
      "start_date": "2023-12-11",
      "completion_date": "2029-02-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-06",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 61,
      "location_summary": "Daphne, Alabama • Auburn, California • Glendale, California + 54 more",
      "locations": [
        {
          "city": "Daphne",
          "state": "Alabama"
        },
        {
          "city": "Auburn",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Greenbrae",
          "state": "California"
        },
        {
          "city": "Harbor City",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06065748"
    },
    {
      "nct_id": "NCT00540358",
      "title": "A Phase 2 Trial of Standard Chemotherapy, With or Without BSI-201, in Patients With Triple Negative Metastatic Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "gemcitabine/carboplatin",
          "type": "DRUG"
        },
        {
          "name": "iniparib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "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": 123,
      "start_date": "2007-10",
      "completion_date": "2010-06",
      "has_results": false,
      "last_update_posted_date": "2012-12-28",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 18,
      "location_summary": "Birmingham, Alabama • Denver, Colorado • Torrington, Connecticut + 15 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Torrington",
          "state": "Connecticut"
        },
        {
          "city": "Ocoee",
          "state": "Florida"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00540358"
    },
    {
      "nct_id": "NCT02476955",
      "title": "Open-label Phase 1b Study of ARQ 092 in Combination With Anastrozole",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Solid Tumors",
        "Ovarian Cancer",
        "Endometrial Cancer"
      ],
      "interventions": [
        {
          "name": "ARQ 092 + carboplatin + paclitaxel (Closed)",
          "type": "DRUG"
        },
        {
          "name": "ARQ 092 + paclitaxel (Closed)",
          "type": "DRUG"
        },
        {
          "name": "ARQ 092 + anastrozole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ArQule, Inc., a subsidiary of Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc. (Rahway, NJ USA)",
      "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": 41,
      "start_date": "2015-06-09",
      "completion_date": "2019-05-07",
      "has_results": false,
      "last_update_posted_date": "2020-09-30",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 5,
      "location_summary": "Grand Rapids, Michigan • New York, New York • Oklahoma City, Oklahoma + 2 more",
      "locations": [
        {
          "city": "Grand Rapids",
          "state": "Michigan"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02476955"
    },
    {
      "nct_id": "NCT05159778",
      "title": "Phase 2 Study of Imprime PGG and Pembrolizumab in Patients With HR+/HER2- Metastatic Breast Cancer (mBCA)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Malignant Neoplasm of Breast"
      ],
      "interventions": [
        {
          "name": "Imprime PGG",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "HiberCell, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 26,
      "start_date": "2021-11-09",
      "completion_date": "2023-04-12",
      "has_results": false,
      "last_update_posted_date": "2023-06-22",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 16,
      "location_summary": "Tucson, Arizona • Denver, Colorado • Miami, Florida + 12 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05159778"
    },
    {
      "nct_id": "NCT00444535",
      "title": "Lapatinib and Bevacizumab for Metastatic Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Neoplasms, Breast"
      ],
      "interventions": [
        {
          "name": "lapatinib",
          "type": "DRUG"
        },
        {
          "name": "bevacizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "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": 52,
      "start_date": "2007-02-27",
      "completion_date": "2020-06-19",
      "has_results": true,
      "last_update_posted_date": "2021-10-25",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 9,
      "location_summary": "Tucson, Arizona • San Francisco, California • Hollywood, Florida + 6 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Basking Ridge",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00444535"
    },
    {
      "nct_id": "NCT02626507",
      "title": "Phase I Study of Combination of Gedatolisib With Palbociclib and Faslodex in Patients With ER+/HER2- Breast Cancer",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Gedatolisib",
          "type": "DRUG"
        },
        {
          "name": "Faslodex",
          "type": "DRUG"
        },
        {
          "name": "Palbociclib",
          "type": "DRUG"
        },
        {
          "name": "Zoladex",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffman Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 18,
      "start_date": "2016-01",
      "completion_date": "2022-03-15",
      "has_results": false,
      "last_update_posted_date": "2022-02-09",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 2,
      "location_summary": "Los Angeles, California • The Bronx, New York",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02626507"
    },
    {
      "nct_id": "NCT06006910",
      "title": "Electronic Medical Record-Based Nudge to Reduce SLNB",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "Estrogen-receptor-positive Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Column-based nudge in the EHR",
          "type": "BEHAVIORAL"
        },
        {
          "name": "No column-based nudge in the EHR",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "70 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "70 Years and older · Female only"
      },
      "enrollment_count": 7,
      "start_date": "2021-10-15",
      "completion_date": "2024-02-12",
      "has_results": false,
      "last_update_posted_date": "2024-02-14",
      "last_synced_at": "2026-07-21T22:12:00.456Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06006910"
    }
  ]
}