This trial aims to assess the long-term efficacy of moderately hypofractionated neoadjuvant radiotherapy for soft tissue sarcoma in the limbs or trunk wall. The primary outcome is local disease control, assessed by the cumulative incidence of progression/recurrence. After informed consent has been obtained and eligibility criteria have been checked, a baseline assessment will be performed followed by the experimental treatment: intensity-modulated radiotherapy with a moderately hypofractionated regimen consisting in 15 fractions of 2.7 Gy administered over 3 weeks. a follow-up assessment will be performed 3 to 4 weeks after the last radiotherapy session. Tumor resection will be performed 4 to 8 weeks after the radiotherapy. Patients will then be followed up until the end of the study; planned 5 years after the last inclusion. Radiotherapy will be evaluated in terms of safety and efficacy.
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Local control of the disease at the two-year follow-up
Timeframe: From enrollment to the two-year follow-up