Five sessions of targeted radiation for early stage breast cancer after surgery

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

Not applicable Interventional University of Alabama at Birmingham · NCT03643861

This study is testing if giving five sessions of targeted radiation after breast cancer surgery can work just as well as the usual longer treatment.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment40 (estimated)
Ages18 Years to 99 Years
SexAll
SponsorUniversity of Alabama at Birmingham Academic / other
Drugs / interventionschemotherapy, radiation
Locations1 site (Birmingham, Alabama)
Trial IDNCT03643861 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety and feasibility of administering five fractions of stereotactic body radiotherapy (SBRT) for patients with early stage breast cancer following a lumpectomy. The goal is to determine if this shorter radiation schedule can effectively replace the longer standard treatment regimen. Participants will be monitored for 36 months with follow-up appointments at regular intervals to assess outcomes and any potential side effects.

Who should consider this trial

Good fit: Ideal candidates are women over 50 with early stage invasive breast cancer or ductal carcinoma in situ, who have undergone a lumpectomy.

Not a fit: Patients with multifocal or multicentric cancer or those who have received neoadjuvant chemotherapy may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could reduce treatment time and improve the quality of life for breast cancer patients.

How similar studies have performed: Other studies have explored similar approaches to radiation therapy, but this specific method is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Pathologically proven invasive mammary carcinoma, Invasive ductal carcinoma (IDC) or ductal carcinoma in situ (DCIS) of the breast. Medullary, papillary, mucinous (colloid) and tubular histologies are allowed.
* Age\>50.
* Maximum pathologic tumor size \<2.0cm if invasive carcinoma or \< 2.5cm if pure DCIS.
* Estrogen receptor (ER) positive (\>10%).
* Must be eligible for breast conservation therapy and receive a lumpectomy with pathologic margins of at least 2mm.
* Must be clinically node negative by physical examination. Sentinel node dissection is not required, but if undertaken, the patient must be pathologically node negative.
* Zubrod Performance Status 0-2.

Exclusion Criteria:

* Multifocal or multicentric cancer.
* Reception of neoadjuvant chemotherapy.
* Pure invasive lobular histology.
* Inability to clearly delineate lumpectomy cavity on post lumpectomy planning scan.
* Measured maximum PTV of \>124cc.
* Lumpectomy cavity within 5mm of body contour.

Where this trial is running

Birmingham, Alabama

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Breast CancerSBRTBreast cancerEarly stageRadiation therapy
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.