{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Breast+Cancer%2C+Early+Breast+Cancer",
    "query": {
      "condition": "Breast Cancer, Early Breast Cancer"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 481,
    "total_pages": 49,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Breast+Cancer%2C+Early+Breast+Cancer&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-25T17:51:08.551Z",
  "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": "NCT01919229",
      "title": "A Pharmacodynamics Pre-surgical Study of LEE011 in Early Breast Cancer Patients (MONALEESA-1)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Early Breast Cancer"
      ],
      "interventions": [
        {
          "name": "LEE011 (ribociclib)",
          "type": "DRUG"
        },
        {
          "name": "letrozole",
          "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": 14,
      "start_date": "2013-10",
      "completion_date": "2014-09",
      "has_results": true,
      "last_update_posted_date": "2016-01-01",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 4,
      "location_summary": "Fayetteville, Arkansas • Los Angeles, California • Boston, Massachusetts + 1 more",
      "locations": [
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01919229"
    },
    {
      "nct_id": "NCT00014222",
      "title": "Combination Chemotherapy With or Without Colony-stimulating Factors in Treating Women With Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "epoetin alfa",
          "type": "BIOLOGICAL"
        },
        {
          "name": "filgrastim",
          "type": "BIOLOGICAL"
        },
        {
          "name": "cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "doxorubicin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "epirubicin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "fluorouracil",
          "type": "DRUG"
        },
        {
          "name": "paclitaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "NCIC Clinical Trials Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "Up to 60 Years · Female only"
      },
      "enrollment_count": 2104,
      "start_date": "2000-12-04",
      "completion_date": "2014-03-17",
      "has_results": true,
      "last_update_posted_date": "2020-10-05",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 44,
      "location_summary": "Fort Smith, Arkansas • Little Rock, Arkansas • La Jolla, California + 39 more",
      "locations": [
        {
          "city": "Fort Smith",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Greenwich",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00014222"
    },
    {
      "nct_id": "NCT03043794",
      "title": "Study of Stereotactic Radiotherapy for Breast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Stereotactic Body Radiation Therapy SBRT",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "100 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 100 Years · Female only"
      },
      "enrollment_count": 4,
      "start_date": "2017-08-01",
      "completion_date": "2023-10-22",
      "has_results": true,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 2,
      "location_summary": "Washington D.C., District of Columbia • Baltimore, Maryland",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03043794"
    },
    {
      "nct_id": "NCT04290897",
      "title": "Oxaloacetate for the Improvement of Cognitive Complaints in Stage 0-IIIA Breast Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Anatomic Stage 0 Breast Cancer AJCC v8",
        "Anatomic Stage I Breast Cancer AJCC v8",
        "Anatomic Stage IA Breast Cancer AJCC v8",
        "Anatomic Stage IB Breast Cancer AJCC v8",
        "Anatomic Stage II Breast Cancer AJCC v8",
        "Anatomic Stage IIA Breast Cancer AJCC v8",
        "Anatomic Stage IIB Breast Cancer AJCC v8",
        "Anatomic Stage IIIA Breast Cancer AJCC v8",
        "Early-Stage Breast Carcinoma",
        "Prognostic Stage 0 Breast Cancer AJCC v8",
        "Prognostic Stage I Breast Cancer AJCC v8",
        "Prognostic Stage IA Breast Cancer AJCC v8",
        "Prognostic Stage IB Breast Cancer AJCC v8",
        "Prognostic Stage II Breast Cancer AJCC v8",
        "Prognostic Stage IIA Breast Cancer AJCC v8",
        "Prognostic Stage IIB Breast Cancer AJCC v8",
        "Prognostic Stage IIIA Breast Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Anhydrous Enol-oxaloacetate",
          "type": "DRUG"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Jonsson Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "74 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 74 Years · Female only"
      },
      "enrollment_count": 18,
      "start_date": "2021-09-29",
      "completion_date": "2024-11-12",
      "has_results": false,
      "last_update_posted_date": "2025-07-15",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04290897"
    },
    {
      "nct_id": "NCT01141530",
      "title": "Deep Sequencing of the Breast Cancer Transcriptome",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 0,
      "start_date": "2009-09",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2013-12-05",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 1,
      "location_summary": "Little Rock, Arkansas",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01141530"
    },
    {
      "nct_id": "NCT00614172",
      "title": "Proton Therapy for Early Stage Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Early-Stage Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Proton radiation therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Loma Linda 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": 50,
      "start_date": "2004-02",
      "completion_date": "2020-05-12",
      "has_results": true,
      "last_update_posted_date": "2023-09-21",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 1,
      "location_summary": "Loma Linda, California",
      "locations": [
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00614172"
    },
    {
      "nct_id": "NCT01754519",
      "title": "Radiation Therapy in Treating Post-Menopausal Women With Early Stage Breast Cancer Undergoing Surgery",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ductal Breast Carcinoma In Situ",
        "Estrogen Receptor Negative",
        "Estrogen Receptor Positive",
        "HER2/Neu Negative",
        "Invasive Cribriform Breast Carcinoma",
        "Invasive Ductal Carcinoma, Not Otherwise Specified",
        "Lobular Breast Carcinoma In Situ",
        "Mucinous Breast Carcinoma",
        "Papillary Breast Carcinoma",
        "Progesterone Receptor Positive",
        "Stage I Breast Cancer",
        "Stage II Breast Cancer",
        "Stage IIIA Breast Cancer",
        "Stage IIIC Breast Cancer",
        "Tubular Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Therapeutic Conventional Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "Roswell Park Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "50 Years and older · Female only"
      },
      "enrollment_count": 1,
      "start_date": "2013-05",
      "completion_date": "2015-08",
      "has_results": true,
      "last_update_posted_date": "2017-07-07",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01754519"
    },
    {
      "nct_id": "NCT01266642",
      "title": "Hypofractionated Radiation Therapy or Standard Radiation Therapy in Treating Patients With Ductal Breast Carcinoma In Situ or Early Invasive Breast Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ductal Breast Carcinoma In Situ",
        "Invasive Breast Carcinoma",
        "Stage I Breast Cancer AJCC v6",
        "Stage IA Breast Cancer AJCC v7",
        "Stage IB Breast Cancer AJCC v7",
        "Stage II Breast Cancer AJCC v6 and v7",
        "Stage IIA Breast Cancer AJCC v6 and v7",
        "Stage IIB Breast Cancer AJCC v6 and v7"
      ],
      "interventions": [
        {
          "name": "External Beam Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Hypofractionated Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Whole Breast Irradiation",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "40 Years and older · Female only"
      },
      "enrollment_count": 301,
      "start_date": "2011-02-08",
      "completion_date": "2040-11-30",
      "has_results": true,
      "last_update_posted_date": "2026-03-11",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 7,
      "location_summary": "Gilbert, Arizona • Orlando, Florida • Conroe, Texas + 3 more",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Conroe",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01266642"
    },
    {
      "nct_id": "NCT00436566",
      "title": "Doxorubicin and Cyclophosphamide Followed By Trastuzumab, Paclitaxel, and Lapatinib in Treating Patients With Early-Stage HER2-Positive Breast Cancer That Has Been Removed By Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Cardiac Toxicity"
      ],
      "interventions": [
        {
          "name": "trastuzumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "doxorubicin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "lapatinib ditosylate",
          "type": "DRUG"
        },
        {
          "name": "paclitaxel",
          "type": "DRUG"
        },
        {
          "name": "gene expression analysis",
          "type": "GENETIC"
        },
        {
          "name": "reverse transcriptase-polymerase chain reaction",
          "type": "GENETIC"
        },
        {
          "name": "fluorophotometry",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "mass spectrometry",
          "type": "OTHER"
        },
        {
          "name": "adjuvant therapy",
          "type": "PROCEDURE"
        },
        {
          "name": "quality-of-life assessment",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "GENETIC",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 122,
      "start_date": "2007-03-16",
      "completion_date": "2019-07-22",
      "has_results": true,
      "last_update_posted_date": "2022-08-05",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00436566"
    },
    {
      "nct_id": "NCT05289466",
      "title": "Oncoplastic Partial Mastectomy With Intraoperative Radiation Therapy (IORT) in Early Stage Breast Cancer Patients With Prior History of Chest Wall Radiation.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "IORT-Intra-Operative Radiation Therapy"
      ],
      "interventions": [
        {
          "name": "Intraoperative Radiotherapy",
          "type": "RADIATION"
        },
        {
          "name": "Oncoplastic partial mastectomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Saint John's Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "50 Years and older · Female only"
      },
      "enrollment_count": 5,
      "start_date": "2021-12-16",
      "completion_date": "2024-10-23",
      "has_results": false,
      "last_update_posted_date": "2025-12-31",
      "last_synced_at": "2026-06-25T17:51:08.551Z",
      "location_count": 1,
      "location_summary": "Santa Monica, California",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05289466"
    }
  ]
}