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Meta-Analysis of 5-Fraction Preoperative Radiotherapy for Soft Tissue Sarcoma.

Zachary S Mayo1, Cong Fan, Xuefei Jia

  • 1Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH.

American Journal of Clinical Oncology
|May 20, 2024
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Summary
This summary is machine-generated.

Preoperative 5-fraction radiation therapy (RT) for soft tissue sarcoma (STS) shows high 2-year local control (LC) with acceptable wound complications and toxicity. Further multi-institutional trials are recommended.

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Area of Science:

  • Oncology
  • Radiation Oncology
  • Surgical Oncology

Background:

  • Limited studies exist on preoperative 5-fraction radiation therapy (RT) for soft tissue sarcoma (STS).
  • This meta-analysis evaluates the efficacy and safety of this RT paradigm for STS treatment.

Approach:

  • A study-level meta-analysis using Bayesian methods was conducted.
  • Included studies focused on 2-year local control (LC) and major wound complications (MWC).
  • Subgroup analyses compared RT doses of ≥30 Gy versus <30 Gy.

Key Points:

  • The meta-analysis included 209 patients from 7 studies, with a median follow-up of 29 months.
  • The 2-year LC rate for the entire cohort was 96.9%, with a 30.6% MWC rate.
  • A trend towards improved LC was observed with ≥30 Gy, with no significant differences in MWC or late toxicity.

Conclusions:

  • Preoperative 5-fraction RT for STS demonstrates excellent 2-year LC.
  • MWC and toxicity rates were similar to standard fractionation preoperative RT.
  • Multi-institutional trials with a universal RT protocol are warranted to further validate these findings.