Accelerated radiation therapy for early-stage breast cancer

Prospective Randomized Study of Accelerated Radiation Therapy (PRART) : A Non-Inferiority Trial to Compare Breast Cosmesis and Local Control After Concomitant Boost Breast Radiotherapy With Fifteen Fractions in Three Weeks (Arm 1, Standard) Versus Ten Fractions in Two Weeks (Arm 2, Experimental)

Phase 3 Interventional Weill Medical College of Cornell University · NCT04175210

This study is testing if a shorter radiation treatment for early-stage breast cancer can be just as effective as the standard longer treatment, making it easier for women to manage their care.

Quick facts

PhasePhase 3
Study typeInterventional
Enrollment400 (estimated)
Ages19 Years to 90 Years
SexFemale
SponsorWeill Medical College of Cornell University Academic / other
Drugs / interventionschemotherapy, radiation
Locations3 sites (New York, New York and 2 other locations)
Trial IDNCT04175210 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the effectiveness of accelerated radiation therapy for women with early-stage breast cancer, specifically those with Stage 0 ductal carcinoma in situ and Stage T1-T2 lymph node negative breast cancers. Participants will be randomly assigned to receive either the standard treatment of whole breast radiotherapy over 15 fractions or an experimental approach over 10 fractions. The goal is to determine if the shorter treatment duration is equally effective while potentially improving patient convenience and quality of life.

Who should consider this trial

Good fit: Ideal candidates are women who have undergone segmental mastectomy for early-stage breast cancer with negative margins.

Not a fit: Patients who have previously received radiation therapy to the affected breast or who are male may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to a more efficient radiation therapy regimen for early-stage breast cancer patients, reducing treatment time without compromising effectiveness.

How similar studies have performed: Other studies have shown promising results with accelerated radiation therapy approaches, suggesting potential for success in this trial.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Women status post segmental mastectomy
* If unilateral, pT1-2 breast cancer excised with negative margins
* If bilateral, pT1-2 breast cancer excised with negative margins AND/OR pTis excised with negative margins.
* Clinically N0 or pN0 or sentinel node negative
* Ductal carcinoma in situ DCIS with negative margins (no DCIS on inked margins).

Exclusion Criteria:

* Previous radiation therapy to the ipsilateral breast.
* 90 days from last surgery, unless s/p adjuvant chemotherapy
* 60 days from last chemotherapy
* Male breast cancer

Where this trial is running

New York, New York and 2 other locations

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 Cancer
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.