Prospective Randomized Study of Accelerated Radiation Therapy (PRART) (PRART)
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ClinicalTrials.gov Identifier: NCT04175210 |
Recruitment Status :
Recruiting
First Posted : November 22, 2019
Last Update Posted : August 2, 2022
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Condition or disease | Intervention/treatment | Phase |
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Breast Cancer | Radiation: Radiation therapy - 3 weeks Radiation: Radiation therapy - 2 weeks | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 400 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | 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) |
Actual Study Start Date : | November 21, 2019 |
Estimated Primary Completion Date : | December 31, 2024 |
Estimated Study Completion Date : | December 31, 2025 |

Arm | Intervention/treatment |
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Experimental: ARM 1-4050cGY and boost to tumor bed of 4800cGY in 15fractions
Patients randomized to ARM 1 will receive whole breast radiotherapy of 4050cGY and a concomitant boost to the tumor bed of 4800cGY in 15 fractions
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Radiation: Radiation therapy - 3 weeks
Patients randomized to ARM 1 will receive whole breast radiotherapy of 4050cGY and a concomitant boost to the tumor bed of 4800cGY in 15 fractions |
Experimental: ARM 2 - 3200cGY and boost to tumor bed of 4200cGY -10fractions
Patients randomized to ARM 2 will receive whole breast radiotherapy of 3200cGY and a concomitant boost to the tumor bed of 4200cGY in 10 fractions.
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Radiation: Radiation therapy - 2 weeks
Patients randomized to ARM 2 will receive whole breast radiotherapy of 3200cGY and a concomitant boost to the tumor bed of 4200cGY in 10 fractions. |
- Number of patients with adverse events receiving radiation therapy between the two arms Arm 1 (15 fractions) and Arm 2 (10 fractions). [ Time Frame: up to 5 years ]rate of grade 3 or higher changes in breast cosmesis on the 10 fraction arm compared to the rate on the 15 fraction arm will be measured.
- Number of participants who demonstrate local control at 5 year follow up [ Time Frame: 5 years ]assess and compare local control at 5 years between the two arms.

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Ages Eligible for Study: | 19 Years to 90 Years (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
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

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 ClinicalTrials.gov identifier (NCT number): NCT04175210
Contact: Charles Ekeh, M.D. | 6469622196 | che4005@med.cornell.edu | |
Contact: Pragya Yadav, Ph.D. | 6469622199 | pry2003@med.cornell.edu |
United States, New York | |
New York Presbyterian Hospital at Lower Manhattan Cancer Center | Recruiting |
New York, New York, United States, 10007 | |
Contact: Charles Ekeh, M.D. 646-962-2196 shc2043@med.cornell.edu | |
Contact: Pragya Yadav, Ph.D. 6469622199 pry2003@med.cornell.edu | |
Principal Investigator: Silvia Formenti, M.D. | |
Brooklyn Methodist Hospital - NewYork Presbyterian | Recruiting |
New York, New York, United States, 11215 | |
Contact: Izael Nino izn4001@med.cornell.edu | |
Contact: Pragya Yadav, Ph.D. 6469622199 pry2003@med.cornell.edu | |
Principal Investigator: Hani Ashamalla, M.D. | |
New York Presbyterian Hospital - Queens | Recruiting |
New York, New York, United States, 11355 | |
Contact: Sarah Stankiewich, B.S. 718-661-7246 sas9306@nyp.org | |
Contact: Pragya Yadav, Ph.D 6469622199 pry2003@med.cornell.edu | |
Principal Investigator: Akkamma Ravi, M.D. |
Principal Investigator: | Silvia Formenti, M.D. | Weill Medical College of Cornell University |
Responsible Party: | Weill Medical College of Cornell University |
ClinicalTrials.gov Identifier: | NCT04175210 |
Other Study ID Numbers: |
19-07020533 |
First Posted: | November 22, 2019 Key Record Dates |
Last Update Posted: | August 2, 2022 |
Last Verified: | July 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |