New 5-Dose radiation approach could simplify breast cancer treatment
NCT ID NCT03643861
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is testing a 5-session radiation treatment (stereotactic body radiotherapy) for people with early-stage breast cancer who have already had a lumpectomy. The goal is to see if this shorter course is safe and has fewer side effects than standard longer radiation. About 40 participants aged 50 and older with small, hormone-positive tumors will be enrolled.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2019
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 99 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Pathologically proven invasive mammary carcinoma, Invasive ductal carcinoma (IDC) or ductal carcinoma in situ (DCIS) of the breast. Medullary, papillary, mucinous (colloid) and tubular histologies are allowed. * Age\>50. * Maximum pathologic tumor size \<2.0cm if invasive carcinoma or \< 2.5cm if pure DCIS. * Estrogen receptor (ER) positive (\>10%). * Must be eligible for breast conservation therapy and receive a lumpectomy with pathologic margins of at least 2mm. * Must be clinically node negative by physical examination. Sentinel node dissection is not required, but if undertaken, the patient must be pathologically node negative. * Zubrod Performance Status 0-2. Exclusion Criteria: * Multifocal or multicentric cancer. * Reception of neoadjuvant chemotherapy. * Pure invasive lobular histology. * Inability to clearly delineate lumpectomy cavity on post lumpectomy planning scan. * Measured maximum PTV of \>124cc. * Lumpectomy cavity within 5mm of body contour.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Alabama at Birmingham (UAB) Hazelrig-Salter Radiation Oncology Center (HSROC)
RECRUITINGBirmingham, Alabama, 35233, United States
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