Status:

RECRUITING

5 vs. 9-day Course of Whole Breast Radiotherapy With Boost for Early-stage Breast Cancer

Lead Sponsor:

University of Utah

Conditions:

Breast Cancer

Invasive Carcinoma of Breast

Eligibility:

FEMALE

18+ years

Phase:

PHASE2

Brief Summary

The goal of this study is to evaluate 5 days vs. 9 days of whole breast radiation.

Eligibility Criteria

Inclusion

  • Female participant aged ≥ 18 years.
  • -Participants must have at least one of the following risk factors:
  • Grade 3 invasive histology
  • Estrogen receptor positivity less than 5%
  • Lymphovascular invasion
  • Invasive margins \<2mm on surgical pathology
  • DCIS final positive margin
  • Extensive intraductal component
  • Age ≤ 50 years
  • Tumor size \> 2 cm
  • Histologically confirmed invasive carcinoma or Ductal Carcinoma In Situ (DCIS) of the breast.
  • Breast cancer stage (AJCC v8) T0-3, N0, M0. T0 N0 is allowed if whole breast radiation is recommended by the treating physician.
  • Lumpectomy within 84 days of the start of radiation.
  • ECOG Performance Status ≤ 2, or KPS ≥ 50
  • Negative inked histologic margins from lumpectomy, with the exception of a focus of positive margin at the pectoralis fascia.
  • Negative pregnancy test for participants of childbearing potential, evidence of permanent surgical sterilization, or post-menopausal status. The post-menopausal status will be defined as having been amenorrheic for 12 months without an alternative medical cause. The following age-specific requirements apply:
  • \< 50 years of age:
  • Amenorrheic for ≥ 12 months following cessation of exogenous hormonal treatments; and
  • Luteinizing hormone and follicle-stimulating hormone levels in the post-menopausal range for the institution
  • ≥ 50 years of age:
  • Amenorrheic for 12 months or more following cessation of all exogenous hormonal treatments; or
  • Had radiation-induced menopause with last menses \>1 year ago; or
  • Had chemotherapy-induced menopause with last menses \>1 year ago
  • Sexually active participants of childbearing potential must agree to use highly effective method of contraception (defined in Section 5.4.1) during the course of radiation and for 30 days after radiation.
  • Able to provide informed consent and willing to sign an approved consent form that conforms to federal and institutional guidelines.

Exclusion

  • Bilateral breast cancer.
  • Prior radiation therapy to the chest.
  • Prior chemotherapy.
  • Recurrent disease.
  • Known metastases or node positive.
  • Major chest surgery which is expected to impact study participation 8 weeks prior to starting study drug.
  • Prior breast malignancy in either breast.
  • The diagnosis of any other malignancy which, in the opinion of the Investigator, is likely to negatively impact the subject's safety or ability to participate in the study.
  • Current evidence of uncontrolled, significant intercurrent illness including, but not limited to, the following conditions:
  • Cardiovascular disorders:
  • Congestive heart failure New York Heart Association Class III or IV, unstable angina pectoris, serious cardiac arrhythmias.
  • Stroke (including transient ischemic attack \[TIA\]), myocardial infarction (MI), or other ischemic events, or thromboembolic event (e.g., deep venous thrombosis, pulmonary embolism) within 3 months before the first dose.
  • Any other condition that would, in the Investigator's judgment, contraindicate the participant's participation in the clinical study due to safety concerns or compliance with clinical study procedures (e.g., infection/inflammation, intestinal obstruction, unable to swallow, social/ psychological issues, etc.)
  • Significant post lumpectomy complications requiring an unplanned re-operation for surgical complications or admission for IV antibiotics. Re-operation for margins evaluation or nodal evaluation is acceptable. Draining of a seroma is not considered a complication unless it has become infected.
  • Breast neuroendocrine carcinoma or sarcoma histology.
  • Radiation sensitizing disease or condition (e.g. connective tissue disease, li fremani, etc.).
  • Medical, psychiatric, cognitive, or other conditions that may compromise the participant's ability to understand the participant information, give informed consent, comply with the study protocol or complete the study.
  • Participants receiving concurrent radiation sensitizing medications or therapies.

Key Trial Info

Start Date :

May 21 2025

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

May 1 2033

Estimated Enrollment :

144 Patients enrolled

Trial Details

Trial ID

NCT06961955

Start Date

May 21 2025

End Date

May 1 2033

Last Update

December 9 2025

Active Locations (1)

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1

Huntsman Cancer Institute/University of Utah

Salt Lake City, Utah, United States, 84112