Try the modernized beta website. Learn more about the modernization effort.
Working… Menu

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

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT04084730
Recruitment Status : Recruiting
First Posted : September 10, 2019
Last Update Posted : March 22, 2022
Information provided by (Responsible Party):
Memorial Sloan Kettering Cancer Center

Brief Summary:
The purpose of this study is to determine if the dose of radiation therapy that is effective in producing a treatment response, delivered over a shorter treatment period, is a safe approach that causes few or mild side effects in women with newly diagnosed breast cancer or DCIS who have had a lumpectomy procedure.

Condition or disease Intervention/treatment Phase
Invasive Ductal Breast Carcinoma Invasive Ductal Carcinoma, Breast DCIS DCIS Grade 1 DCIS Grade 2 Breast Cancer Radiation: Accelerated Partial Breast Irradiation Phase 2

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 140 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Ultra-Short External Beam-Based Accelerated Partial Breast Irradiation (APBI): A Phase II Toxicity Study Nested With a Non-inferiority Assessment of APBI in New Patient Cohorts
Actual Study Start Date : August 30, 2019
Estimated Primary Completion Date : August 30, 2023
Estimated Study Completion Date : August 30, 2023

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Breast Cancer

Arm Intervention/treatment
Experimental: Participants with Breast Cancer
Participants will have unicentric pathological stage I invasive ductal breast cancer or Grade 1 or 2 DCIS measuring <3cm in longest diameter on pathology and/or mammogram that is histologically confirmed at MSKCC.
Radiation: Accelerated Partial Breast Irradiation
Treatment will consist of APBI delivered using external beam RT techniques to a dose of 24 Gy in 3 fractions of 8.0 Gy delivered on consecutive weekdays
Other Name: APBI

Primary Outcome Measures :
  1. Toxicity with novel APBI schedule as determined by CTCAE version 5 [ Time Frame: 24 months ]
    The study is deemed too toxic if the rate of serious toxicity is >/= 10%.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   45 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Female
  • Age >/= 45 years
  • Unicentric pathological stage I (pT1 or T2 pN0_M0) invasive ductal breast cancer or DCIS measuring <3 cm in longest diameter on pathology and/or mammogram that is histologically confirmed. If T2, the tumor must be less than 3cm in longest diameter. Note: Women ≥ 70 years or older with T1 invasive ductal carcinoma who are estrogen- receptor positive (ER+) with clinically negative axillary nodes, and do not undergo surgical lymph node mapping or dissection (i.e., if tumor deposit is 0.2 mm or less, regardless of whether the deposit is detected by immunohistochemistry or hematoxylin and eosin staining) will also be eligible
  • Histologically negative tumor margin or no tumor in a re-excision specimen on final shaved specimen.
  • ECOG Performance Status of 0 or 1.
  • Clips must be placed in the lumpectomy cavity at the time of final excision in order to aid in the delineation of the tumor cavity at the time of simulation and radiation delivery.
  • Negative serum pregnancy test within 14 days prior to study treatment if a woman has child-bearing potential. Subjects of child bearing potential are those who have not been surgically sterilized or have not been free from menses for > 1 year
  • Written informed consent obtained from subject and ability for subject or comply with the requirements of the study
  • Female subjects of childbearing potential should be willing to use 2 methods or birth control or be surgically sterile or abstain from heterosexual activity for the duration of study participation. Should a woman become pregnant while participating on study, she should inform the treating physician immediately.

Inclusion Criteria for intermediate risk substudy:

  • Post-NAC cohort patients: clinical T1 or T2 (less than or equal to 5cm in longest diameter on available imaging) and clinical N0 (on exam and imaging) with pathological pT0 or pTis and pN0 (any regimen of neoadjuvant chemotherapy agents is allowed)


  • Oncotype RS score of 26 or higher


  • PAM50 ROR scored as "HIGH"


  • Presence or LVI (focal, limited or "not otherwise specified") in the lumpectomy specimen


  • Age 40-49 years (ALL OF THE FOLLOWING MUST BE TRUE : 1) no history of prior benign breast biopsies, 2) no concomitant or prior atypia in either breast, 3) no concomitant or prior LCIS in either breast, 4) no family history of breast cancer in first degree relatives)


  • Invasive lobular carcinoma


  • Women 70 or older with tumors 2.0 cm or less in size and with clinically or pathologically negative nodes who decline or are ineligible for hormonal therapy OR discontinue hormonal therapy within 3 months of initiating treatment.

Exclusion Criteria:

  • Patients with distant metastasis
  • Patients who are pregnant or breastfeeding
  • Patients with diffuse (>1 quadrant or >5cm) suspicious microcalcifications or patients with known multicentric OR multifocal disease. (microscopic multifocal disease that may be unifocal and/or appear multifocal due to sectioning is allowed after review with PI).
  • Prior radiation therapy to the ipsilateral or contralateral breast or thorax.
  • Histological evidence of extensive lymphovascular invasion (LVI)
  • Histological evidence of extensive intraductal component (EIC), defined as the presence of intraductal carcinoma both within the primary infiltrating ductal tumor (comprising at least 25% of the tumo area) and intraductal carcinoma present clearly beyond the edges of the invasive tumor.
  • Patients are not required to undergo BRCA1 and BRCA2 or other genetic mutation tests in order to enroll on the study. Note: in the event a patient is tested and is found to be a mutation carrier, she would be excluded from the study. It would be an extremely rare/unlikely scenario for patients to be discovered BRCA positive after the completion of PBI, as all patients with risk factors for BRCA mutations (positive family history, Ashkenazi Jewish descent, ER-/PR-/her2-neu-negative receptor status) are usually tested prior to radiation. Should such a situation exist, these patients will be given the option of remaining on the breast conservation paradigm or opting for mastectomy (as is done in this rare scenario is standard of care practice). The patient will be replaced on the trial.
  • History of cosmetic or reconstructive breast surgery.
  • Medical condition such as uncontrolled infection (including HIV), uncontrolled diabetes mellitus, or connective tissue diseases (lupus, systemic sclerosis, or other collagen vascular diseases) that, in the opinion of the treating physician, would make this protocol unreasonably hazardous for the patient.
  • Patients with a "currently active" second malignancy other than non-melanoma skin cancers. Patients are not considered to have "currently active" malignancies if they have completed therapy and are considered by their physicians to be at <5% risk of relapse within 3 years.
  • Patients who are already enrolled in or planning to enroll in other adjuvant systemic therapy protocols for both non-invasive or invasive breast cancer
  • Expecting to conceive within the projected duration of the trials, starting with screening visit through 180 days after the last dose of trial treatment
  • Concomitant anti-neoplastic treatment is not allowed during protocol treatment and should be completed at least 2 weeks prior to commencement of protocol treatment, with resolution of associated acute toxicities. Bisphosponates are permitted without restriction even during protocol treatment. Note: This does not apply to hormonal therapies such as tamoxifen or AIs, which are permitted. This does not apply to anti-Her2 therapies such as trastuzumab or TDM-1, which are also permitted.
  • Ongoing therapy with other investigational agents. Patients may not be receiving any other investigational agents.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT04084730

Layout table for location contacts
Contact: Atif J Khan, MD 848-225-6334
Contact: Simon Powell, MD, PhD 212-639-3639

Layout table for location information
United States, Connecticut
Norwalk Hospital Recruiting
Norwalk, Connecticut, United States, 06850
Contact: Philip Gilbo, MD    203-845-4811      
United States, Florida
Baptist Alliance Miami Cancer Institute Recruiting
Miami, Florida, United States, 33143
Contact: Joseph Panoff, MD    786-596-2000      
United States, New Jersey
Memoral Sloan Kettering Basking Ridge Recruiting
Basking Ridge, New Jersey, United States, 07920
Contact: Atif J Khan, MD    848-225-6334      
Memoral Sloan Kettering Monmouth Recruiting
Middletown, New Jersey, United States, 07748
Contact: Atif J Khan, MD    848-225-6334      
Memorial Sloan Kettering Bergen Recruiting
Montvale, New Jersey, United States, 07645
Contact: Atif J Khan, MD    848-225-6334      
United States, New York
Memorial Sloan Kettering Commack Recruiting
Commack, New York, United States, 11725
Contact: Atif J Khan, MD    848-225-6334      
Memoral Sloan Kettering Westchester Recruiting
Harrison, New York, United States, 10604
Contact: Atif J Khan, MD    848-225-6334      
Memorial Sloan Kettering Cancer Center Recruiting
New York, New York, United States, 10021
Contact: Atif J Khan, MD    848-225-6334      
Memorial Sloan Kettering Nassau Recruiting
Uniondale, New York, United States, 11553
Contact: Atif J Khan, MD    848-225-6334      
Sponsors and Collaborators
Memorial Sloan Kettering Cancer Center
Layout table for investigator information
Principal Investigator: Atif J Khan, MD Memorial Sloan Kettering Cancer Center
Additional Information:
Layout table for additonal information
Responsible Party: Memorial Sloan Kettering Cancer Center Identifier: NCT04084730    
Other Study ID Numbers: 19-300
First Posted: September 10, 2019    Key Record Dates
Last Update Posted: March 22, 2022
Last Verified: March 2022
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: Memorial Sloan Kettering Cancer Center supports the international committee of medical journal editors (ICMJE) and the ethical obligation of responsible sharing of data from clinical trials. The protocol summary, a statistical summary, and informed consent form will be made available on when required as a condition of Federal awards, other agreements supporting the research and/or as otherwise required. Requests for deidentified individual participant data can be made beginning 12 months after publication and for up to 36 months post publication. Deidentified individual participant data reported in the manuscript will be shared under the terms of a Data Use Agreement and may only be used for approved proposals. Requests may be made to:

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: Yes
Keywords provided by Memorial Sloan Kettering Cancer Center:
Unicentric pathological stage I breast invasive ductal breast cancer
Breast Cancer
Memorial Sloan Kettering Cancer Center
Additional relevant MeSH terms:
Layout table for MeSH terms
Breast Neoplasms
Carcinoma, Ductal
Carcinoma, Ductal, Breast
Neoplasms, Glandular and Epithelial
Neoplasms by Histologic Type
Neoplasms by Site
Breast Diseases
Skin Diseases
Neoplasms, Ductal, Lobular, and Medullary