{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Estrogen+Receptor+Negative+Breast+Cancer&page=3",
    "query": {
      "condition": "Estrogen Receptor Negative Breast Cancer",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 511,
    "total_pages": 52,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Estrogen+Receptor+Negative+Breast+Cancer&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Estrogen+Receptor+Negative+Breast+Cancer&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T22:40:16.793Z",
  "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": "NCT02599714",
      "title": "Study of AZD2014 and Palbociclib in Patients With Estrogen Receptor Positive (ER+) Metastatic Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Advanced and Metastatic Breast Cancer"
      ],
      "interventions": [
        {
          "name": "AZD2014",
          "type": "DRUG"
        },
        {
          "name": "Palbociclib",
          "type": "DRUG"
        },
        {
          "name": "Fulvestrant",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "130 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 130 Years · Female only"
      },
      "enrollment_count": 54,
      "start_date": "2015-12-07",
      "completion_date": "2023-11-23",
      "has_results": false,
      "last_update_posted_date": "2024-06-06",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 5,
      "location_summary": "Encinitas, California • Sarasota, Florida • Detroit, Michigan + 2 more",
      "locations": [
        {
          "city": "Encinitas",
          "state": "California"
        },
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02599714"
    },
    {
      "nct_id": "NCT00246571",
      "title": "Study Of SU011248 Versus Chemotherapy For Patients With Previously Treated Triple Receptor Negative Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "SU011248",
          "type": "DRUG"
        },
        {
          "name": "Chemotherapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 217,
      "start_date": "2006-01",
      "completion_date": "2011-06",
      "has_results": true,
      "last_update_posted_date": "2012-07-12",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 77,
      "location_summary": "Corona, California • Fullerton, California • Glendora, California + 59 more",
      "locations": [
        {
          "city": "Corona",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Glendora",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00246571"
    },
    {
      "nct_id": "NCT01293032",
      "title": "Hormone Therapy Or Chemotherapy Before Surgery Based on Gene Expression Analysis in Treating Patients With Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Ductal Breast Carcinoma in Situ",
        "Lobular Breast Carcinoma in Situ",
        "Stage II Breast Cancer",
        "Stage IIA Breast Cancer",
        "Stage IIB Breast Cancer",
        "Stage IIIA Breast Cancer",
        "Stage IIIB Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Neoadjuvant Therapy",
          "type": "PROCEDURE"
        },
        {
          "name": "Therapeutic Conventional Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Gene Expression Analysis",
          "type": "GENETIC"
        },
        {
          "name": "Systemic Chemotherapy",
          "type": "DRUG"
        },
        {
          "name": "Tamoxifen Citrate",
          "type": "DRUG"
        },
        {
          "name": "Aromatase Inhibition Therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER",
        "GENETIC",
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "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": 59,
      "start_date": "2011-04",
      "completion_date": "2016-03",
      "has_results": true,
      "last_update_posted_date": "2016-07-12",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 7,
      "location_summary": "Washington D.C., District of Columbia • Charlotte, North Carolina • Greensboro, North Carolina + 3 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Greensboro",
          "state": "North Carolina"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01293032"
    },
    {
      "nct_id": "NCT02273752",
      "title": "Pharmacokinetically Guided Everolimus in Patients With Breast Cancer, Pancreatic Neuroendocrine Tumors, or Kidney Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Estrogen Receptor-positive Breast Cancer",
        "Gastrinoma",
        "Glucagonoma",
        "HER2-negative Breast Cancer",
        "Insulinoma",
        "Mucositis",
        "Oral Complications",
        "Pancreatic Polypeptide Tumor",
        "Progesterone Receptor-positive Breast Cancer",
        "Recurrent Breast Cancer",
        "Recurrent Islet Cell Carcinoma",
        "Recurrent Renal Cell Cancer",
        "Somatostatinoma",
        "Stage III Renal Cell Cancer",
        "Stage IIIA Breast Cancer",
        "Stage IIIB Breast Cancer",
        "Stage IIIC Breast Cancer",
        "Stage IV Breast Cancer",
        "Stage IV Renal Cell Cancer"
      ],
      "interventions": [
        {
          "name": "Everolimus",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 2,
      "start_date": "2014-11",
      "completion_date": "2015-12",
      "has_results": true,
      "last_update_posted_date": "2017-02-03",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02273752"
    },
    {
      "nct_id": "NCT02414776",
      "title": "Hydroxychloroquine in Metastatic Estrogen Receptor-Positive Breast Cancer Progressing on Hormonal Therapy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Estrogen Receptor Positive Breast Cancer"
      ],
      "interventions": [
        {
          "name": "hydroxychloroquine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Western Regional 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": 3,
      "start_date": "2014-07",
      "completion_date": "2015-11",
      "has_results": false,
      "last_update_posted_date": "2017-09-27",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 1,
      "location_summary": "Goodyear, Arizona",
      "locations": [
        {
          "city": "Goodyear",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02414776"
    },
    {
      "nct_id": "NCT00827567",
      "title": "Trial of RAD001 in Triple Negative Metastatic Breast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "RAD 001",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Milton S. Hershey Medical Center",
      "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": 6,
      "start_date": "2009-04",
      "completion_date": "2011-02",
      "has_results": true,
      "last_update_posted_date": "2014-01-13",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 1,
      "location_summary": "Hershey, Pennsylvania",
      "locations": [
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00827567"
    },
    {
      "nct_id": "NCT01770353",
      "title": "MM-398 (Nanoliposomal Irinotecan, Nal-IRI) to Determine Tumor Drug Levels and to Evaluate the Feasibility of Ferumoxytol Magnetic Resonance Imaging to Measure Tumor Associated Macrophages and to Predict Patient Response to Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Solid Tumors",
        "ER/PR Positive Breast Cancer",
        "Triple Negative Breast Cancer",
        "Metastatic Breast Cancer With Active Brain Metastasis"
      ],
      "interventions": [
        {
          "name": "Ferumoxytol",
          "type": "DRUG"
        },
        {
          "name": "MM-398",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ipsen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 45,
      "start_date": "2012-11",
      "completion_date": "2018-10-02",
      "has_results": true,
      "last_update_posted_date": "2019-11-27",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 7,
      "location_summary": "Scottsdale, Arizona • San Francisco, California • Tampa, Florida + 3 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01770353"
    },
    {
      "nct_id": "NCT00073528",
      "title": "Study Comparing Lapatinib (GW572016) And Letrozole Versus Letrozole In Subjects With Advanced Or Metastatic Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "Lapatinib",
          "type": "DRUG"
        },
        {
          "name": "Letrozole",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "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": 1286,
      "start_date": "2003-12-09",
      "completion_date": "2018-03-22",
      "has_results": true,
      "last_update_posted_date": "2021-02-24",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 84,
      "location_summary": "Tucson, Arizona • Hot Springs, Arkansas • Jonesboro, Arkansas + 78 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Alhambra",
          "state": "California"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00073528"
    },
    {
      "nct_id": "NCT00546156",
      "title": "Preoperative Dose-dense Doxorubicin and Cyclophosphamide Followed by Paclitaxel With Bevacizumab in Operable Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Doxorubicin",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Paclitaxel",
          "type": "DRUG"
        },
        {
          "name": "Bevacizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ian E. Krop, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 104,
      "start_date": "2007-10",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2021-05-18",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 4,
      "location_summary": "Boston, Massachusetts • Hooksett, New Hampshire",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Hooksett",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00546156"
    },
    {
      "nct_id": "NCT04288089",
      "title": "A Study of H3B-6545 in Combination With Palbociclib in Women With Advanced or Metastatic Estrogen Receptor-Positive Human Epidermal Growth Factor Receptor-2 (HER2)-Negative Breast Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Receptors, Estrogen",
        "Genes, Erbb-2",
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "Palbociclib (75, 100, 125 milligram [mg])",
          "type": "DRUG"
        },
        {
          "name": "H3B-6545 (150, 300, 450 mg)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eisai 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": 31,
      "start_date": "2020-04-01",
      "completion_date": "2027-03-31",
      "has_results": true,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-10-06T22:40:16.793Z",
      "location_count": 5,
      "location_summary": "Sarasota, Florida • Boston, Massachusetts • Kansas City, Missouri + 2 more",
      "locations": [
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04288089"
    }
  ]
}