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ClinicalTrials.gov public records Last synced Sep 25, 2026, 12:23 AM EDT

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Showing 1–24 of 64 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Radiation Therapy to partial breast Clear all
Active, not recruiting Phase 2 Interventional Results available

Preoperative Single-Fraction Radiotherapy in Early Stage Breast Cancer

NCT02482376
View directory record Official record
Conditions
Breast Cancer
Interventions
Stereotactic body radiotherapy ( SBRT)
Radiation
Lead sponsor
Duke University
Other
Eligibility
50 Years and older · Female only
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2032
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Sep 25, 2026, 12:23 AM EDT
Not listed No phase listed Observational

A Multi-Institutional Registry for CyberKnife Stereotactic Accelerated Partial Breast Irradiation (CK-SAPBI)

NCT02457117
View directory record Official record
Conditions
Breast Cancer
Interventions
CyberKnife Stereotactic Accelerated Partial Breast Irradiation (CK-SAPBI)
Radiation
Lead sponsor
Georgetown University
Other
Eligibility
50 Years to 99 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 16, 2019 · Synced Sep 25, 2026, 12:23 AM EDT
Not yet recruiting Phase 1Phase 2 Interventional

aPBI Re-irradiation

NCT07612254
View directory record Official record
Conditions
Breast Cancer Recurrent
Interventions
Reirradiation
Radiation
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
40 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2033
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Sep 25, 2026, 12:23 AM EDT
Completed Not applicable Interventional

Trial of Partial Breast Irradiation With Various Concurrent Chemotherapy Regimens

NCT00681993
View directory record Official record
Conditions
Breast Cancer
Interventions
Standard Dose Dense Doxorubucin and Cyclophosphamide, Standard Doxorubucin and Cyclophosphamide, Standard Docetaxel, Carboplatin, and Herceptin, Standard Docetaxel, Doxorubucin and Cyclophosphamide, Standard Docetaxel and Cyclophosphamide
Other
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older · Female only
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 21, 2019 · Synced Sep 25, 2026, 12:23 AM EDT
Terminated Not applicable Interventional Results available

Preoperative Stereotactic Ablative Body Radiotherapy (SABR) for Early-Stage Breast Cancer

NCT03137693
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Female, Breast Adenocarcinoma
Interventions
Standard of Care Schedule Variation: SABR, Breast-conserving Surgery
Other · Procedure
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
50 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Sep 25, 2026, 12:23 AM EDT
Recruiting No phase listed Observational

Registry for Intra-Operative Radiotherapy During Breast Conserving Surgery in Patients With Early Stage Breast Cancer

NCT04603209
View directory record Official record
Conditions
Early-stage Breast Cancer, Breast Carcinoma in Situ, Breast Neoplasms
Interventions
Intraoperative Radiation Therapy (IORT)
Radiation
Lead sponsor
Saint John's Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Sep 25, 2026, 12:23 AM EDT
Recruiting Phase 2 Interventional

Study of 3-Day Partial Breast Radiation Therapy in Women With Breast Cancer

NCT04084730
View directory record Official record
Conditions
Invasive Ductal Breast Carcinoma, Invasive Ductal Carcinoma, Breast, DCIS, DCIS Grade 1, DCIS Grade 2, Breast Cancer
Interventions
Accelerated Partial Breast Irradiation
Radiation
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
45 Years and older · Female only
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
9
States / cities
Norwalk, Connecticut • Miami, Florida • Basking Ridge, New Jersey + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 20, 2026 · Synced Sep 25, 2026, 12:23 AM EDT
Completed Phase 1 Interventional Results available

A Study of Rucaparib Administered With Radiation in Patients With Triple Negative Breast Cancer With an Incomplete Response Following Chemotherapy

NCT03542175
View directory record Official record
Conditions
Breast Cancer
Interventions
Rucaparib, Radiotherapy
Drug · Radiation
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
8
States / cities
Norwalk, Connecticut • Basking Ridge, New Jersey • Middletown, New Jersey + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 7, 2025 · Synced Sep 25, 2026, 12:23 AM EDT
Completed Phase 2 Interventional

Proton Craniospinal Radiation Therapy vs. Partial Photon Radiation Therapy for Leptomeningeal Metastasis From Solid Tumors

NCT04343573
View directory record Official record
Conditions
Leptomeningeal Metastases
Interventions
Involved-field Photon Radiation Therapy, Proton Craniospinal Irradiation (CSI), Neurocognitive Assessment, MDASI-BT and MDASI-SP
Radiation · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
Up to 99 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 25, 2026, 12:23 AM EDT
Suspended Phase 1 Interventional

Pilot Trial of Preop Partial Radiation in Breast Cancer Patients

NCT07178665
View directory record Official record
Conditions
Early-stage Breast Cancer, Breast Carcinoma, DCIS
Interventions
Radiation: Accelerated Partial Breast Irradiation (APBI)
Radiation
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
50 Years to 90 Years · Female only
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
10
States / cities
Belleville, New Jersey • Elizabeth, New Jersey • Hamilton, New Jersey + 7 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 25, 2026, 12:23 AM EDT
Recruiting Phase 3 Interventional

De-Escalation of Breast Radiation Trial for Hormone Sensitive, HER-2 Negative, Oncotype Recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)

NCT04852887
View directory record Official record
Conditions
Stage I Breast Cancer
Interventions
Radiation and Endocrine Therapy (Tamoxifen, Anastrozol, Letrozole, Exemestane), Endocrine Therapy (Tamoxifen, Anastrozol, Letrozole, Exemestane)
Other · Drug
Lead sponsor
NRG Oncology
Other
Eligibility
50 Years to 70 Years
Enrollment
1,670 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2041
U.S. locations
812
States / cities
Birmingham, Alabama • Mobile, Alabama • Kingman, Arizona + 553 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Sep 25, 2026, 12:23 AM EDT
Withdrawn Phase 2 Interventional

Proton Accelerated Partial Breast Irradiation

NCT03940248
View directory record Official record
Conditions
Breast Cancer
Interventions
Proton Accelerated Partial Breast Irradiation
Radiation
Lead sponsor
University of Cincinnati
Other
Eligibility
50 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 5, 2021 · Synced Sep 25, 2026, 12:23 AM EDT
Withdrawn Not applicable Interventional

Lumpectomy Followed By Intraoperative Electron Radiation Therapy (IOERT)

NCT01960803
View directory record Official record
Conditions
Invasive Ductal Breast Cancer, Carcinoma Breast Stage I
Interventions
Intraoperative Electron Radiotherapy
Radiation
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
50 Years to 95 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Oak Lawn, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 3, 2024 · Synced Sep 25, 2026, 12:23 AM EDT
Active, not recruiting Phase 1 Interventional

A Phase I Dose Escalation Study of Single Fraction Pre-operative Partial Breast (S-PBI) for Early Stage Breast Cancer

NCT04040569
View directory record Official record
Conditions
Breast Cancer
Interventions
Radiomics on MRI
Radiation
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Sep 25, 2026, 12:23 AM EDT
Completed Not applicable Interventional Results available

Radiation Therapy in Treating Patients With Recurrent Breast Cancer

NCT00945061
View directory record Official record
Conditions
Breast Cancer
Interventions
intracavitary balloon brachytherapy, intraoperative radiation therapy
Radiation
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
3
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 17, 2020 · Synced Sep 25, 2026, 12:23 AM EDT
Recruiting Not applicable Interventional

RAD 1802: Pilot Trial of Five Fraction Stereotactic Body Radiotherapy for Early Stage Breast Cancer Patients Eligible for Post-Operative Accelerated Partial Breast Irradiation (APBI)

NCT03643861
View directory record Official record
Conditions
Breast Cancer
Interventions
5 Fraction Stereotactic Body Radiation Therapy
Radiation
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Sep 25, 2026, 12:23 AM EDT
Completed Early Phase 1 Interventional

Partial Breast Radiation Therapy in Treating Women Undergoing Breast-Conserving Therapy for Early Stage Breast Cancer

NCT00527293
View directory record Official record
Conditions
Breast Cancer
Interventions
adjuvant therapy, 3-dimensional conformal radiation therapy, brachytherapy
Procedure · Radiation
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2015
U.S. locations
4
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 24, 2015 · Synced Sep 25, 2026, 12:23 AM EDT
Completed Not applicable Interventional

Partial Breast Radiation Therapy in Treating Women Undergoing Breast Conservation Therapy for Early-Stage Breast Cancer

NCT00599989
View directory record Official record
Conditions
Breast Cancer, Long-term Effects Secondary to Cancer Therapy in Adults, Skin Reactions Secondary to Radiation Therapy
Interventions
adjuvant therapy, conventional surgery, 3-dimensional conformal radiation therapy, brachytherapy, intracavitary balloon brachytherapy, proton beam radiation therapy
Procedure · Radiation
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years to 120 Years · Female only
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 8, 2020 · Synced Sep 25, 2026, 12:23 AM EDT
Recruiting Not applicable Interventional

GammaPod Dose Escalation Radiation for Early Stage Breast Cancer

NCT04234386
View directory record Official record
Conditions
Breast Cancer
Interventions
GammaPod Radiation
Radiation
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
45 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2030
U.S. locations
4
States / cities
Baltimore, Maryland • Bel Air, Maryland • Columbia, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 25, 2026, 12:23 AM EDT
Withdrawn Not applicable Interventional

Partial Breast Irradiation in a Low-risk Population Screened With MRI

NCT01255553
View directory record Official record
Conditions
Breast Cancer
Interventions
Partial Breast Irradiation
Radiation
Lead sponsor
University of Chicago
Other
Eligibility
40 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 3, 2014 · Synced Sep 25, 2026, 12:23 AM EDT
Withdrawn Not applicable Interventional

A Pilot Study of CyberKnife Radiosurgery Delivered to the Partial Breast

NCT00529334
View directory record Official record
Conditions
Breast Cancer
Interventions
CyberKnife Partial Breast Irradiation
Radiation
Lead sponsor
Georgetown University
Other
Eligibility
45 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Nov 19, 2013 · Synced Sep 25, 2026, 12:23 AM EDT
Not listed Not applicable Interventional

Intraoperative Boost Radiotherapy With Electrons (IOERT) Followed By Hypofractionated Whole-Breast Irradiation (WBRT)

NCT01295723
View directory record Official record
Conditions
Invasive Lobular and Ductal Carcinoma
Interventions
Hypofractionated Whole Breast Radiation Therapy, Intraoperative Electron Radiation Therapy
Radiation
Lead sponsor
St. Joseph Hospital of Orange
Other
Eligibility
40 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2022
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated May 10, 2022 · Synced Sep 25, 2026, 12:23 AM EDT
Completed Not applicable Interventional

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

NCT00103181
View directory record Official record
Conditions
Breast Cancer
Interventions
3-dimensional conformal accelerated partial breast irradiation, brachytherapy, whole breast irradiation, MammoSite or other single-entry intracavitary device
Radiation
Lead sponsor
NSABP Foundation Inc
Network
Eligibility
18 Years and older · Female only
Enrollment
4,216 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2018
U.S. locations
374
States / cities
Birmingham, Alabama • Peoria, Arizona • Phoenix, Arizona + 295 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2022 · Synced Sep 25, 2026, 12:23 AM EDT
Recruiting Phase 2 Interventional

Compare Adjuvant Monotherapy With Endocrine or Accelerated Partial Breast Irradiation After Lumpectomy

NCT05472792
View directory record Official record
Conditions
Breast Cancer, Quality of Life
Interventions
Accelerated Partial Breast Irradiation (APBI), tamoxifen, anastrozole, exemestane, letrozole, fulvestrant, toremifene
Radiation · Drug
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
65 Years and older · Female only
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2032
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 25, 2026 · Synced Sep 25, 2026, 12:23 AM EDT