Stereotactic Multiple Fraction Radiotherapy for Non-spine Bone Metastases
SMILE
1 other identifier
interventional
162
1 country
2
Brief Summary
To investigate, whether multi-fraction stereotactic body radiation therapy (SBRT) within 3 treatment fractions is non-inferior to the current standard of care of 5 fraction SBRT regarding pain response at 3 months after radiotherapy.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Jun 2022
Longer than P75 for not_applicable
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 3, 2022
CompletedStudy Start
First participant enrolled
June 1, 2022
CompletedFirst Posted
Study publicly available on registry
June 6, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 31, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
May 31, 2026
ExpectedMay 22, 2025
May 1, 2025
3 years
May 3, 2022
May 19, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Pain relief (response rate) measured with the Visual Analog Scale (VAS) from Baseline to 3 months after treatment.
The Visual Analog Scale is a validated, subjective measure for pain. Possible scores ranges between zero (no pain) and ten (worst possible pain). The primary endpoint was defined as pain relief \> 2 points from Baseline to 3 months after treatment.
Baseline and 3 months after treatment
Study Arms (2)
SBRT with 9 Gy x 3 fractions to the treatment site.
EXPERIMENTALPatients will be treated with SBRT delivering 9 Gy x 3 fractions (BED10: 51.3 Gy) to the treatment site.
SBRT with 7 Gy x 5 fractions to the treatment site
ACTIVE COMPARATORPatients will be treated with SBRT delivering 7 Gy x 5 fractions (BED10: 59.5 Gy) to the treatment site.
Interventions
Stereotactic multiple fraction radiotherapy
Eligibility Criteria
You may qualify if:
- Personally signed and dated written informed consent,
- Histological diagnosis of malignancy,
- Histologically or radiologically diagnosed bone metastasis,
- Age ≥ 18 years
- Pain or under pain control medication
You may not qualify if:
- Pregnant or lactating women,
- Women of childbearing potential or sexually active males not willing to use effective contraception while on treatment and 3 months after the end of treatment,
- Inability to follow the procedures of the study, e.g., due to language problems, psychological disorders, dementia, etc.,
- Prior radiotherapy to the intended treatment site,
- Lesions \> 5cm in maximum diameter,
- Prior treatment with radioactive isotopes within 30 days of randomisation,
- Spinal column, hands, feet, or head as intended treatment site,- Fracture at the intended treatment site,
- Surgery required or previous surgery at the intended treatment site
- Instability of the intended treatment site.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
Kantonsspital Winterthur
Winterthur, Canton of Zurich, 8401, Switzerland
University Hospital Bern
Bern, 3010, Switzerland
Related Publications (1)
Foerster R, Zwahlen DR, Schroeder C, Windisch P, Halatsch ME, Alfieri A, Meier C, Hemmatazad H, Aebersold DM, Buchali A, Habermehl D, Batifi N. SMILE-stereotactic multiple fraction radiotherapy for non-spine bone metastases: study protocol for a multicenter, open-label phase III randomized controlled trial. Trials. 2024 Nov 13;25(1):762. doi: 10.1186/s13063-024-08608-6.
PMID: 39538259DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Robert Foerster, MD
Kantonsspital Winterthur KSW
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 3, 2022
First Posted
June 6, 2022
Study Start
June 1, 2022
Primary Completion
May 31, 2025
Study Completion (Estimated)
May 31, 2026
Last Updated
May 22, 2025
Record last verified: 2025-05
Data Sharing
- IPD Sharing
- Will not share