SBRT for Breast Cancer Oligometastases

King Hussein Cancer Center50 enrolled

Overview

This is a prospective data collection of treatment outcome for newly diagnosed oligometastatic breast cancers with 1-3 bone metastases. Eligible patients will be identified from the weekly Breast MDC. Patients will receive the recommended systemic and local treatment (including metastases directed SBRT) according to our clinical practice guidelines.Patients will be followed according to our routine with clinical and radiologic assessment. It is preferred that the same imaging method that was used to originally detect the metastases be used in follow-up assessments. The first imaging for SBRT sites will be three months post SBRT and every three months for the first year, every 6 months for the second year, then annually. Response and progression for these metastases will be evaluated using the revised Response Evaluation Criteria in Solid Tumors (RECIST) guideline (version 1.1). Changes in the largest diameter (unidimensional measurement) of the tumor lesions is used in the RECIST criteria. If functional imaging (bone scan, PET) were used at staging, changes in the uptake will be used in follow up scans to determine response to treatment and progression. As for SBRT related morbidities, we will use the Common Terminology Criteria for Adverse Events (CTCAE v5) for toxicity reporting and scoring.

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Breast Neoplasm Malignant Female

Interventions

Stereotactic Body RadiotherapyRADIATION

This is a prospective study of breast bone only oligometastases (up to three sites). Following systemic treatment and primary tumor control, patients will receive SBRT to all metastatic sites. Data on toxicities and oncological outcomes will be collected for future analysis. There will be no change in the standard systemic therapy nor the local therapy of the primary tumor.

Eligibility

Sex: FEMALEMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Women \>18 years old with a pathologically proven breast cancer who present with 1-3 bone metastases will be included. * Metastases need to be confirmed pathologically if possible, otherwise two different imaging modalities (CTor MRI and bone scan or PET) are needed to confirm metastases. * Patients should be able to receive the recommended local and systemic treatment and the primary tumor must be controlled at time of SBRT. * Maximum diameter of individual metastasis metastasis in any dimension ≤ 5 cm; and must be \>5 cm away from each other (defined as Edge to Edge of tumor). Exclusion Criteria: * Non bone metastatic breast cancers * Prior history of radiotherapy to same sites of SBRT * Pathologic fractures of involved bones * Contraindications to radiotherapy including pregnancy and connective tissue disease. * Patients with impaired cognitive functions.

Outcomes

Primary Outcomes

Progression free survival (PFS)

the interval from diagnosis until disease progression

Time frame: 5 years

Overall survival (OS)

time from diagnosis to death from any cause or last follow-up

Time frame: 5 years

Secondary Outcomes

Existing metastasis control

the interval from diagnosis until local progression of the treated metastases

Time frame: 3 years

Appearance of new metastases

the interval from diagnosis until appearance of new metastases

Time frame: 3 years

Adverse Events

CTCAE v5. for acute and chronic toxicity reporting and scoring

Time frame: 3 years

SBRT for Breast Cancer Oligometastases

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes

Central Contacts