{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Partial+Breast+Irradiation+%28PBI%29",
    "query": {
      "intervention": "Partial Breast Irradiation (PBI)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 22,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Partial+Breast+Irradiation+%28PBI%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-01T14:31:21.649Z",
  "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": "NCT01581619",
      "title": "External-Beam Partial-Breast Irradiation for Early Breast Cancer 40 Gy QD Over 2 Weeks",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "External Beam Partial-Breast Irradiation",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Massachusetts General Hospital",
      "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": 54,
      "start_date": "2012-05",
      "completion_date": "2019-08",
      "has_results": true,
      "last_update_posted_date": "2020-11-02",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 4,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01581619"
    },
    {
      "nct_id": "NCT04371913",
      "title": "Personalized Second Chance Breast Conservation (PSCBC): A Prospective Phase II Clinical Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "600cGY x 5 fractions APBI",
          "type": "RADIATION"
        },
        {
          "name": "270cGy x 15 fractions WBRT",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "90 Years",
        "sex": "FEMALE",
        "summary": "19 Years to 90 Years · Female only"
      },
      "enrollment_count": 120,
      "start_date": "2020-06-30",
      "completion_date": "2035-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-27",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 3,
      "location_summary": "Brooklyn, New York • New York, New York",
      "locations": [
        {
          "city": "Brooklyn",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04371913"
    },
    {
      "nct_id": "NCT02272400",
      "title": "Image Guided Radiotherapy (IGRT) for Prone Partial Breast Irradiation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "IGRT for prone partial breast irradiation (PBI)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 65 Years · Female only"
      },
      "enrollment_count": 310,
      "start_date": "2007-08-07",
      "completion_date": "2014-10-29",
      "has_results": false,
      "last_update_posted_date": "2021-01-14",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02272400"
    },
    {
      "nct_id": "NCT02276885",
      "title": "Prone Partial Breast Irradiation (PBI): a Prospective Randomized Trial",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "PBI Radiotherapy 6 Gy",
          "type": "RADIATION"
        },
        {
          "name": "PBI Radiotherapy 8 Gy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "90 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 90 Years · Female only"
      },
      "enrollment_count": 284,
      "start_date": "2014-10-28",
      "completion_date": "2026-12-07",
      "has_results": true,
      "last_update_posted_date": "2025-12-30",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02276885"
    },
    {
      "nct_id": "NCT03581136",
      "title": "Phase II Multi-center Trial Evaluating 5 Fraction Stereotactic Partial Breast Irradiation Using Gammapod",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Dose Fractionation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Texas Southwestern 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": 74,
      "start_date": "2019-04-22",
      "completion_date": "2030-06-28",
      "has_results": false,
      "last_update_posted_date": "2025-09-29",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Dallas, Texas",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03581136"
    },
    {
      "nct_id": "NCT04917640",
      "title": "Registry for Accelerated Partial Breast Irradiation With (SBRT) or (IMRT)",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "GenesisCare USA",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "100 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 100 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2021-06",
      "completion_date": "2024-12",
      "has_results": false,
      "last_update_posted_date": "2021-09-08",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 1,
      "location_summary": "Stuart, Florida",
      "locations": [
        {
          "city": "Stuart",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04917640"
    },
    {
      "nct_id": "NCT04040569",
      "title": "A Phase I Dose Escalation Study of Single Fraction Pre-operative Partial Breast (S-PBI) for Early Stage Breast Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Radiomics on MRI",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "University of Texas Southwestern 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": 45,
      "start_date": "2019-12-25",
      "completion_date": "2027-07",
      "has_results": false,
      "last_update_posted_date": "2026-09-23",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04040569"
    },
    {
      "nct_id": "NCT03909282",
      "title": "Surgical Excision vs Neoadjuvant Radiotherapy+Delayed Surgical Excision of Ductal Carcinoma",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Ductal Breast Carcinoma in Situ"
      ],
      "interventions": [
        {
          "name": "Lumpectomy",
          "type": "PROCEDURE"
        },
        {
          "name": "Partial breast irradiation prior to surgery",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Stanford 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": "2019-03-22",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03909282"
    },
    {
      "nct_id": "NCT00103181",
      "title": "Radiation Therapy (WBI Versus PBI) in Treating Women Who Have Undergone Surgery For Ductal Carcinoma In Situ or Stage I or Stage II Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "3-dimensional conformal accelerated partial breast irradiation",
          "type": "RADIATION"
        },
        {
          "name": "brachytherapy",
          "type": "RADIATION"
        },
        {
          "name": "whole breast irradiation",
          "type": "RADIATION"
        },
        {
          "name": "MammoSite or other single-entry intracavitary device",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "NSABP Foundation Inc",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 4216,
      "start_date": "2005-03",
      "completion_date": "2018-08",
      "has_results": false,
      "last_update_posted_date": "2022-04-14",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 374,
      "location_summary": "Birmingham, Alabama • Peoria, Arizona • Phoenix, Arizona + 295 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00103181"
    },
    {
      "nct_id": "NCT07723209",
      "title": "Radiation After No Axillary Nodal Sampling",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Early-stage Breast Cancer",
        "Invasive Ductal Carcinoma of Female Breast"
      ],
      "interventions": [
        {
          "name": "Partial Breast Irradiation (PBI)",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "NYU Langone Health",
      "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": 105,
      "start_date": "2026-07-09",
      "completion_date": "2034-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-07-23",
      "last_synced_at": "2026-10-01T14:31:21.649Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07723209"
    }
  ]
}