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About
This phase II trial studies the side effects and how well radiation therapy works in treating patients with stage 0-II breast cancer. Specialized radiation therapy that delivers a high dose of radiation directly to the tumor may kill more tumor cells and cause less damage to normal tissue.
Full description
PRIMARY OBJECTIVES:
I. To assess the cosmesis, acute toxicity and late toxicity in patients treated with accelerated partial breast irradiation delivered with proton radiation.
SECONDARY OBJECTIVES:
I. To evaluate the convenience of accelerated partial breast irradiation and quality of life during accelerated partial breast irradiation.
II. To estimate the in-breast tumor control rates in patients treated with accelerated partial breast irradiation delivered with proton radiation.
III. Compare dosimetry to alternate treatment modalities.
OUTLINE:
Within 10 weeks of last breast cancer surgery, patients undergo accelerated partial breast irradiation (APBI) delivered with proton radiation twice daily (BID) for 5 days.
After completion of study treatment, patients are followed up at 6 weeks, 6 months, 1 year, and 18 months, then annually for 10 years.
Enrollment
Sex
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Volunteers
Inclusion criteria
Women who satisfy all of the following conditions are the only patients who will be eligible for this study.
The patient must consent to be in the study and must have signed an approved consent form conforming with federal and institutional guidelines.
Patients must be >/= 18 years old. (Adenocarcinoma of the breast is not seen in children)
English and non-English speaking patient
The patient must have stage 0, I, or II breast cancer. If stage II, the tumor size must be 3 cm or less.
On histological examination, the tumor must be DCIS or invasive adenocarcinoma of the breast.
Surgical treatment of the breast must have been lumpectomy. The margins of the resected specimen must be histologically free of tumor (DCIS and invasive).
Re-excision of surgical margins is permitted.
Gross disease must be unifocal with pathologic (invasive and/or DCIS) tumor size 3 cm or less. (Patients with microscopic multifocality are eligible as long as total pathologic tumor size is 3 cm or less.)
Patients with invasive breast cancer are required to have axillary staging which can include sentinel node biopsy alone (if sentinel node is negative), sentinel node biopsy followed by axillary dissection or sampling with a minimum total of 6 axillary nodes (if sentinel node is positive), or axillary dissection alone (with a minimum of 6 axillary nodes). Axillary staging is not required for patients with DCIS.
The target lumpectomy cavity must be clearly delineated and the target lumpectomy cavity/whole breast reference volume must be < 30% based on the postoperative/pre-enrollment CT scan.
Patients are eligible if, based on the postoperative CT scan, PBI is judged to be technically deliverable.
Patients with a history of non-breast malignancies are eligible if they have been disease-free for 5 or more years prior to enrollment and are deemed by their physician to be at low risk for recurrence. Patients with the following cancers are eligible if diagnosed and treated within the past 5 years: carcinoma in situ of the cervix, carcinoma in situ of the colon, melanoma in situ, and basal cell and squamous cell carcinoma of the skin.
Exclusion criteria
Women with one or more of the following conditions also are ineligible for this study.
Primary purpose
Allocation
Interventional model
Masking
200 participants in 1 patient group
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Central trial contact
Eric A. Strom, BS,MD
Data sourced from clinicaltrials.gov
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