Single-Fraction very accelerated partial breast irradiation (sfVAPBI) in Low-Risk invasive or ductal in situ breast carcinoma - phase II multicenter trial
NCT ID NCT07067437
First seen Sep 09, 2026 · Last updated Sep 09, 2026
Summary
To investigate clinical outcomes, late side effects, and cosmetic results of a single-fraction very accelerated partial breast irradiation as postoperative local treatment for the treatment of early stage breast cancer.
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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 250 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2025
- Expected to finish
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Aug 2032
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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40 years and older
- Sex
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Female participants only
- 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.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Stage 0 \& I \& II (\< 3 cm) breast carcinoma * Lesions of \< 3 cm diameter * Invasive carcinoma of any subtype and grade or ductal carcinoma in situ (DCIS) * Nodal status: node-negative (pN0) or micro-metastatic (pN1mi) (patients with pN1mi status can be treated, but due to the limited clinical evidence, individual decision is needed) * M0: Absence of distant metastasis * Clear resection margins by National Surgical Adjuvant Breast and Bowel Project (NSABP) definition (no tumor on ink) * Unifocal (multifocality limited within 2 cm) and unicentric breast cancer * Age\> 40 years * Luminal A or B tumors * Time interval from surgery preferably less than 12 weeks and no longer than 20 weeks, and from adjuvant chemotherapy less than 4 weeks * Human Epidermal growth factor Receptor 2 positive (HER2+) patients receiving postoperative anti-HER2 systemic therapy * Specific signed consent form prior to randomization Exclusion Criteria: * Stage III-IV breast cancer * Surgical margins that cannot be microscopically assessed * Extensive intraductal component (EIC+) * Extensive lymphovascular invasion (LVI+) (focal is allowed) * Triple negative breast cancer * BReast CAncer gene (BRCA) 1-2 mutation * Human Epidermal growth factor Receptor 2 positive (HER2+) patients not receiving postoperative anti-HER2 systemic therapy * Neoadjuvant systemic therapy * Paget's disease or pathological skin involvement * Synchronous or previous breast cancer. * Pregnant or lactating women
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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
23 sites in 9 countries. 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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Antoine Lacassagne Cancer Centre
RECRUITINGNice, France
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Centre Léon Bérard
NOT_YET_RECRUITINGLyon, France
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Fundacion IMOR's Oncology Clinic
NOT_YET_RECRUITINGBarcelona, Spain
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Greater Poland Cancer Centre
RECRUITINGPoznan, Poland
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Hospital Universitario de Navarra
NOT_YET_RECRUITINGPamplona, Spain
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Hospital del Mar
RECRUITINGBarcelona, 08003, Spain
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Inselspital, Universitätsspital Bern
NOT_YET_RECRUITINGBern, Switzerland
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Institut Catala d'Oncologia
RECRUITINGBarcelona, Spain
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Institut de Cancérologie de Lorraine
NOT_YET_RECRUITINGNancy, France
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Instituto Português de Oncologia do Porto
NOT_YET_RECRUITINGPorto, Portugal
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Instituto Valenciano de Oncologia
NOT_YET_RECRUITINGValencia, Spain
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Klinikum Bremerhaven
NOT_YET_RECRUITINGBremerhaven, Germany
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Lower Silesian Oncology, Pulmonology and Hematology Center
NOT_YET_RECRUITINGWroclaw, Poland
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Maria Skłodowska-Curie Bialystok Oncology Center
NOT_YET_RECRUITINGBialystok, Poland
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National Cancer Institute
NOT_YET_RECRUITINGVilnius, Lithuania
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National Institute of Oncology
RECRUITINGBudapest, Hungary
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National Institute of Oncology
RECRUITINGGliwice, Poland
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Oncology Institute Vojvodina
RECRUITINGKamenica, Serbia
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Sana Klinikum Offenbach
NOT_YET_RECRUITINGOffenbach, Germany
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Szpital Specjalistyczny w Brzozowie Podkarpacki Ośrodek Onkologiczny
NOT_YET_RECRUITINGBrzozów, Poland
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University Hospital Erlangen
RECRUITINGErlangen, Germany
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Universitätsklinikum Schleswig-Holstein
NOT_YET_RECRUITINGLübeck, Germany
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Universitätsklinikum Würzburg
NOT_YET_RECRUITINGWürzburg, Germany
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