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About
This phase II trial studies how well hypofractionated radiation therapy works in treating patients with stage 0-IIB breast cancer. Hypofractionated radiation therapy delivers higher doses of radiation therapy over a shorter period of time and may kill more tumor cells and have fewer side effects.
Full description
Adjuvant radiation therapy (RT) plays an important role in successful breast conservation in early-stage breast cancer and has been shown to significantly reduce the risk of breast cancer recurrence over surgery alone. Adding breast radiation to lumpectomy has allowed women to keep their natural breast, as multiple randomized trials have demonstrated equivalent overall and disease-free survival compared to a mastectomy. Meta-analyses have concluded that post-lumpectomy radiation improves breast cancer survival, with an estimated 1 life saved for every 4 recurrences prevented. An important component of radiation therapy is the time-dose-fractionation schedule. Up until the last decade, the standard radiation schedule in North America involved 6-8 weeks of daily radiation.
This study proposes that fractionation will provide a significant improvement in convenience and cost effectiveness, while delivering equivalent cancer control.
This will be a phase II single arm non-inferiority trial. Trial patients will receive 9 fractions hypofractionated radiation. Patients will be evaluated for breast photographic cosmetic scores with hypofractionated radiation compared to standard fractionation 24 months after radiation.
Enrollment
Sex
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Volunteers
Inclusion criteria
Histologically confirmed invasive carcinoma and/or ductal carcinoma in situ (DCIS) of the breast
Final pathologic Tis, T1-T3, all must be N0 and M0 status.
Negative inked histologic margins from lumpectomy, with the exception of a focus of positive margin at the pectoralis fascia
Radiation oncologist does not plan to treat regional lymph nodes beyond standard whole breast tangent fields
Lumpectomy with negative lymph node on surgical evaluation (Isolated tumor cells in lymph nodes will be permitted). Patients with invasive carcinoma ≥ 70 yrs and with ER+ positive tumor ≤ 2.0cm may enroll without surgical lymph node evaluation, per section 5.1. Patients with Ductal Carcinoma In Situ (DCIS) of the breast only may enroll without surgical lymph node evaluation.
Negative serum or urine beta-human chorionic gonadotropin (HCG) in women of child-bearing potential =< 7 days prior to registration
Women of child-bearing potential must agree to utilize a form of birth control or agree to undergo sexual abstinence during radiation therapy
Eastern Cooperative Oncology Group (ECOG) (Zubrod) performance status 0-1
Able to provide informed consent and willing to sign an approved consent form that conforms to federal and institutional guidelines
Exclusion criteria
Primary purpose
Allocation
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102 participants in 1 patient group
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Central trial contact
Ashley Horstmeier
Data sourced from clinicaltrials.gov
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