{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Estrogen+Receptor-Positive+Breast+Carcinoma&page=4",
    "query": {
      "condition": "Estrogen Receptor-Positive Breast Carcinoma",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 393,
    "total_pages": 40,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Estrogen+Receptor-Positive+Breast+Carcinoma&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Estrogen+Receptor-Positive+Breast+Carcinoma&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-09T19:02:28.867Z",
  "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": "NCT04059484",
      "title": "Phase 2 Study of Amcenestrant (SAR439859) Versus Physician's Choice in Locally Advanced or Metastatic ER-positive Breast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer Metastatic"
      ],
      "interventions": [
        {
          "name": "Amcenestrant",
          "type": "DRUG"
        },
        {
          "name": "Fulvestrant",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Letrozole",
          "type": "DRUG"
        },
        {
          "name": "Exemestane",
          "type": "DRUG"
        },
        {
          "name": "Tamoxifen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 367,
      "start_date": "2019-10-22",
      "completion_date": "2025-01-02",
      "has_results": true,
      "last_update_posted_date": "2026-02-24",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 14,
      "location_summary": "Birmingham, Alabama • Bakersfield, California • Santa Monica, California + 11 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Fairway",
          "state": "Kansas"
        },
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04059484"
    },
    {
      "nct_id": "NCT05386108",
      "title": "Study of Abemaciclib and Elacestrant in Participants With Brain Metastasis Due to ER+/HER-2- Breast Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Breast Neoplasms",
        "Brain Neoplasms",
        "Neoplasms by Site",
        "Neoplasms",
        "Breast Diseases",
        "Central Nervous System Neoplasms",
        "Brain Diseases",
        "Central Nervous System Diseases"
      ],
      "interventions": [
        {
          "name": "Elacestrant",
          "type": "DRUG"
        },
        {
          "name": "Abemaciclib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stemline Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 73,
      "start_date": "2022-08-31",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-10-09",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 11,
      "location_summary": "Fullerton, California • Los Angeles, California • Urbana, Illinois + 8 more",
      "locations": [
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Urbana",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05386108"
    },
    {
      "nct_id": "NCT02756364",
      "title": "Sapanisertib in Combination With Fulvestrant in Women With Advanced or Metastatic Breast Cancer After Aromatase Inhibitor Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "Fulvestrant",
          "type": "DRUG"
        },
        {
          "name": "Sapanisertib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Calithera Biosciences, 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": 141,
      "start_date": "2016-07-28",
      "completion_date": "2019-11-25",
      "has_results": true,
      "last_update_posted_date": "2023-02-08",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 30,
      "location_summary": "Mobile, Alabama • Bakersfield, California • Fullerton, California + 26 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02756364"
    },
    {
      "nct_id": "NCT00925548",
      "title": "STRIDE - STimulating Immune Response In aDvanced brEast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Tecemotide (L-BLP25) and Hormonal Treatment",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo of tecemotide (L-BLP25) and Hormonal Treatment",
          "type": "BIOLOGICAL"
        },
        {
          "name": "cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "sodium chloride (NaCl)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "EMD Serono",
      "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": 16,
      "start_date": "2009-09",
      "completion_date": "2010-08",
      "has_results": true,
      "last_update_posted_date": "2014-07-24",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 1,
      "location_summary": "Hickory, North Carolina",
      "locations": [
        {
          "city": "Hickory",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00925548"
    },
    {
      "nct_id": "NCT02003209",
      "title": "Docetaxel, Carboplatin, Trastuzumab, and Pertuzumab With or Without Estrogen Deprivation in Treating Patients With Hormone Receptor-Positive, HER2-Positive Operable or Locally Advanced Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HER2-Positive Breast Carcinoma",
        "Hormone Receptor-Positive Breast Carcinoma",
        "Stage IB Breast Cancer AJCC v7",
        "Stage IIA Breast Cancer AJCC v6 and v7",
        "Stage IIB Breast Cancer AJCC v6 and v7",
        "Stage IIIA Breast Cancer AJCC v7",
        "Stage IIIB Breast Cancer AJCC v7",
        "Stage IIIC Breast Cancer AJCC v7"
      ],
      "interventions": [
        {
          "name": "Aromatase Inhibition Therapy",
          "type": "DRUG"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Cytology Specimen Collection Procedure",
          "type": "OTHER"
        },
        {
          "name": "Docetaxel",
          "type": "DRUG"
        },
        {
          "name": "Goserelin Acetate",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Pertuzumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Therapeutic Conventional Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Trastuzumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Whole Breast Irradiation",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "BIOLOGICAL",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 315,
      "start_date": "2014-02-18",
      "completion_date": "2025-06-30",
      "has_results": true,
      "last_update_posted_date": "2026-10-06",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 731,
      "location_summary": "Fairbanks, Alaska • Hot Springs, Arkansas • Anaheim, California + 466 more",
      "locations": [
        {
          "city": "Fairbanks",
          "state": "Alaska"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Antioch",
          "state": "California"
        },
        {
          "city": "Arroyo Grande",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02003209"
    },
    {
      "nct_id": "NCT04711252",
      "title": "A Comparative Study of AZD9833 Plus Palbociclib Versus Anastrozole Plus Palbociclib in Patients With ER-Positive HER2 Negative Breast Cancer Who Have Not Received Any Systemic Treatment for Advanced Disease",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "ER-Positive HER2-Negative Breast Cancer"
      ],
      "interventions": [
        {
          "name": "AZD9833",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole placebo",
          "type": "DRUG"
        },
        {
          "name": "AZD9833 placebo",
          "type": "DRUG"
        },
        {
          "name": "Palbociclib",
          "type": "DRUG"
        },
        {
          "name": "Luteinizing hormone-releasing hormone (LHRH) agonist",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "130 Years",
        "sex": "ALL",
        "summary": "18 Years to 130 Years"
      },
      "enrollment_count": 1371,
      "start_date": "2021-01-28",
      "completion_date": "2029-02-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-28",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 30,
      "location_summary": "Mobile, Alabama • Springdale, Arkansas • Harbor City, California + 25 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Springdale",
          "state": "Arkansas"
        },
        {
          "city": "Harbor City",
          "state": "California"
        },
        {
          "city": "Solvang",
          "state": "California"
        },
        {
          "city": "Lone Tree",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04711252"
    },
    {
      "nct_id": "NCT02248090",
      "title": "AZD9496 First Time in Patients Ascending Dose Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "ER+ HER2- Advanced Breast Cancer"
      ],
      "interventions": [
        {
          "name": "AZD9496",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "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": 45,
      "start_date": "2014-10-22",
      "completion_date": "2019-04-03",
      "has_results": false,
      "last_update_posted_date": "2019-06-24",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 3,
      "location_summary": "Sarasota, Florida • New York, New York • Nashville, Tennessee",
      "locations": [
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02248090"
    },
    {
      "nct_id": "NCT02938442",
      "title": "Vaccination of Triple Negative Breast Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Triple Negative Breast Cancer",
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "P10s-PADRE with MONTANIDE™ ISA 51 VG",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Doxorubicin",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Paclitaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "University of Arkansas",
      "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": 16,
      "start_date": "2019-01-25",
      "completion_date": "2023-01-09",
      "has_results": true,
      "last_update_posted_date": "2024-11-07",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 2,
      "location_summary": "Fayetteville, Arkansas • Little Rock, Arkansas",
      "locations": [
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02938442"
    },
    {
      "nct_id": "NCT06760637",
      "title": "Study of PF-07220060 With Letrozole in Adults With HR-positive HER2-negative Breast Cancer Who Have Not Received Anticancer Treatment for Advanced/Metastatic Disease",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "PF-07220060",
          "type": "DRUG"
        },
        {
          "name": "letrozole",
          "type": "DRUG"
        },
        {
          "name": "abemaciclib",
          "type": "DRUG"
        },
        {
          "name": "palbociclib",
          "type": "DRUG"
        },
        {
          "name": "ribociclib",
          "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": 1035,
      "start_date": "2025-01-06",
      "completion_date": "2037-12-29",
      "has_results": false,
      "last_update_posted_date": "2026-05-19",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 218,
      "location_summary": "Birmingham, Alabama • Chandler, Arizona • Gilbert, Arizona + 135 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06760637"
    },
    {
      "nct_id": "NCT04965688",
      "title": "Biology Guided Therapy for Breast Cancer for ER Positive",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Estrogen Receptor-positive Breast Cancer",
        "HER2-negative Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Biopsy-Guided Therapy Selection",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Inova Health Care Services",
      "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": "2021-08-08",
      "completion_date": "2024-03-13",
      "has_results": true,
      "last_update_posted_date": "2025-04-10",
      "last_synced_at": "2026-10-09T19:02:28.867Z",
      "location_count": 1,
      "location_summary": "Fairfax, Virginia",
      "locations": [
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04965688"
    }
  ]
}