An interventional study of Preoperative accelerated partial breast irradiation and Breast conserving surgery in Breast Cancer, sponsored by The Netherlands Cancer Institute. Recruiting at 1 site in Netherlands. Open to female participants aged 51 Years and older. Per ClinicalTrials.gov, last updated 2026-09-17.
Sponsored by The Netherlands Cancer Institute · Not applicable, Interventional, and Treatment
This study evaluates the acute toxicity and feasibility of repeat breast conserving therapy with preoperative accelerated partial breast re-irradiation (PAPBI) in female patients aged 51 years or older with ipsilateral recurrent or second primary low-risk breast cancer or DCIS.
Standard treatment for an ipsilateral breast recurrence is a salvage mastectomy. However, repeat breast conserving therapy, involving breast conserving surgery (BCS) and postoperative re-irradiation, is a feasible alternative for a selected group of patients. In the primary setting, accelerated partial breast irradiation (APBI) is an international accepted treatment for a subset of breast cancer patients. Preoperative APBI (PAPBI) leads to low complication rates, limited fibrosis/induration in a small volume and good to excellent cosmetic results compared with results reported after postoperative APBI.
The aim of this study is to asses the acute toxicity and feasibility of repeat breast conserving therapy with PAPBI followed by BCS in patients aged 51 years or older with ipsilateral recurrent or second primary low-risk breast cancer or DCIS.
Patients undergo PAPBI 5 times (5 x 5.2 Gray). One-two weeks after completion of PAPBI, patients undergo BCS.
14,825 studies on the registry are indexed under Breast Neoplasms; 3,319 are open to participants now.
This study's planned enrollment of 31 is below the median of 72 across 10,896 interventional studies indexed under Breast Neoplasms.
Browse Breast Neoplasms studies →The Netherlands Cancer Institute is the lead sponsor of 231 studies on the registry; 67 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.
Histologically or cytologically confirmed
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Metastases
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Adjuvant and neoadjuvant
Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients receive preoperative accelerated partial breast irradiation of the in situ tumor in the breast followed by repeat breast conserving surgery
Radiation: Preoperative accelerated partial breast irradiation · Procedure: Breast conserving surgery · Procedure: Sentinel node procedure · Procedure: Biopsy track removal
Patients will be treated with 5 x 5.2 Gray (Gy) preoperative accelerated partial breast irradiation of the in situ tumor in the breast
Patients will be treated with breast conserving surgery.
Patients will undergo a (repeat) sentinel node procedure.
The biopsy track will be surgically removed.
Acute post-treatment toxicity
Acute post-treatment toxicity from start of local treatment up to 3 months after end of local treatment, assessed by the Common Terminology Criteria for Adverse Events (CTCAE) v5.0. Values range form 0 to 5, with 5 being the worst value. At least grade ≥ 2 toxicity is scored as an event.
Time frame: 3,5 months
Fibrosis/induration
Assessment of fibrosis/induration grade at 3 months after end of local treatment, assessed the Common Terminology Criteria for Adverse Events (CTCAE) v5.0. Values range form 0 to 5, with 5 being the worst value.
Time frame: 3 months
Patient-reported Outcome Measures (PROMS): EORTC Quality of Life Questionnaire (QLQ)-C30
PROMs will be assessed using the European Organisation for Research and Treatment of Cancer (EORTC) QLQ-C30 questionnaire. All of the scales and single-item measures range in score from 0 to 100. A high score for the functional scales represents a high/healthy level of functioning, whilst a high score for the symptom scales represents a high level of symptomatology or problems.
Time frame: 3,5 months
Patient-reported Outcome Measures (PROMS): EORTC QLQ-BR23
PROMs will be assessed using the European Organisation for Research and Treatment of Cancer (EORTC) QLQ-BR23 questionnaire. All of the scales and single-item measures range in score from 0 to 100. A high score for the functional scales represents a high/healthy level of functioning, whilst a high score for the symptom scales represents a high level of symptomatology or problems.
Time frame: 3,5 months
Patient-reported Outcome Measures (PROMS): Patient's Questionnaire Cosmesis
PROMs will be assessed using the Patient's Questionnaire Cosmesis, adapted from Sneeuw et al. (1992). Patients score their cosmetic outcome by the following outcomes: very satisfied, satisfied, neutral, unsatisfied and very unsatisfied.
Time frame: 3,5 months
Cosmetic outcome according to the BCCT.core software program
Cosmetic outcome according to the Breast Cancer Conservative Treatment cosmetic results (BCCT.core) software program. The program returns an overall cosmetic outcome score (excellent, good, fair, or poor) based on the symmetry of the breasts, skin color, and scar visibility.
Time frame: 3,5 months
Started Apr 2024 (actual). Primary completion is estimated for Oct 2026, 29 months after the start.
Of 2,661 non-industry interventional studies with no phase under Breast Neoplasms, half reached primary completion within 33 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 66. This study's planned 29 months is below that.
Counting every sponsor, half of 2,771 studies reached it within 33 months; a quarter within 15 and three quarters within 66.
How these figures are worked out, and which studies are left out of them.
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