Metastatic Breast Cancer
Conditions
Keywords
Oligometastatic Breast Cancer, Radiotherapy, Progression-free survival (PFS)
Brief summary
The prognosis for patients with metastatic breast cancer has improved continuously. Systemic therapies alone are not able to cure the disease permanently. Investigators initiated this randomized controlled multinational and multicenter clinical trial to analyse the impact of a local metastases-directed radiotherapy in addition to standard systemic therapy in patients with oligometastatic breast cancer on progression-free survival and quality of life.
Detailed description
Preferably ablative radiotherapy (radiosurgery, stereotactic radiotherapy, hypofractionated image-guided radiotherapy (IGRT)) with few high-dose fractions. Larger lesions or lesions with critical normal tissue involvement should be treated with three-dimensional conformal radiation therapy (3D-CRT) or intensity-modulated radiation therapy (IMRT) in moderate hypofractionated radiotherapy (depending on the size and location of the target volume and the decision of the radiooncologist). For critical organs in the target volume, standard fractionated radiotherapy can be used.
Interventions
RADIATIONMetastases-directed Radiotherapy
Ablative radiotherapy (radiosurgery, stereotactic radiotherapy, hypofractionated image-guided radiotherapy (IGRT)) with few high-dose fractions
Sponsors
University Hospital Schleswig-Holstein
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Metastasized breast cancer - up to 5 clinically manifest (new, progressive, persistent) metastases (a lymph node metastasis and a circumscribed local recurrence are each considered as one metastasis, i.e. also locoregional recurrent breast carcinomas with additional hematogenic metastasis possible) * maximum of 3 cerebral metastases known * indication for palliative drug therapy (endocrine therapy and/or chemotherapy and/or treatment with other substances) given according to guidelines (1st-line or further therapy lines, a special regime is not specified) * Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 2 * local radiation of all metastases possible * presentation of a written declaration of consent * patient ≥ 18 years
Exclusion criteria
* Previous radiotherapy, if this interferes with treatment within the scope of the study * symptomatic metastases requiring local therapy of all metastases (e.g. pain radiation), a radiation indication (or other local therapy) for individual metastases is not a criterion for exclusion * known central nervous system (CNS) metastasis without extracerebral metastasis (in these cases, immediate local therapy is mandatory) * more than three known CNS metastases (no indication for purely local therapy of only the metastases, primary whole brain radiation is indicated) * multifocal metastasis in one organ with impossibility to comply with the dose constraints for this organ (e.g., no indication for local therapy of only the metastases, primary whole brain radiation is indicated) (e.g. in the liver) * exclusively regional lymph node metastasis without haematogenic metastases (in these cases local therapy is clearly indicated according to guidelines) * relevant comorbidity, if this results in restrictions for further therapy * Incapacity to contract or lack of informed consent * Pregnancy and lactation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| First co-primary outcome measure is progression-free survival (PFS) | at least 12 months after randomization | Co-primary progression-free survival (PFS) according to Response Evaluation Criteria In Solid Tumors (RECIST) |
| Second co-primary outcome measure is quality of life | 12 weeks after randomization | Co-primary quality of life according to European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire for Cancer patients with 30 items (QLQ-C30) sum score |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Feasibility (per-protocol within intention-to-treat) | 12 weeks | Proportion of participants treated per protocol |
| Overall survival | at least 1, up to 5 years | Time between randomization and death |
| Toxicity (number and degree of reported toxicities in both treatment arms) | 0 to 5 years | Proportion of participants with degree of toxicities as defined by National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) and by Radiation Treatment Oncology Group (RTOG) by point in time of follow-up with higher degree indicating higher intensity |
| Neoplasia-specific quality of life | quarterly up to 5 years | Research and Treatment of Cancer (EORTC) Quality of Life Questionaire for Cancer patients with 30 items (QLQ-C30) with different scales |
| Breast cancer-specific quality of life | quarterly up to 5 years | Research and Treatment of Cancer (EORTC) Quality of Life Questionaire for breast cancer patients with 23 items (QLQ-BR23) on 4-point Likert scales with different directions |
| Patient satisfaction | 12 weeks | Research and Treatment of Cancer (EORTC) Patient satisfaction questionnaire for cancer patients with 33 items (PATSAT-C33) on 5-point Likert scale with higher scores indicating greater satisfaction |
| Frequency of adverse events | 0 to 5 years | Number of patients with adverse and serious adverse events |
Countries
Germany
Contacts
STUDY_DIRECTORJürgen Dunst, Professor
University Hospital Schleswig-Holstein
Outcome results
None listed