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立体定向体部放射治疗与外照射放疗治疗疼痛性骨转移瘤的四项系统评价和荟萃分析的批判性评价及未来方向。

A critical appraisal of the four systematic reviews and meta-analysis on stereotactic body radiation therapy versus external beam radiotherapy for painful bone metastases and where we go from here.

机构信息

Department of Oncology, Princess Margaret Hospital, Hong Kong SAR, China.

Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong SAR, China.

出版信息

Ann Palliat Med. 2023 Nov;12(6):1318-1330. doi: 10.21037/apm-23-218. Epub 2023 Jun 2.

Abstract

Radiotherapy is an important treatment modality for pain control in patients with bone metastases. Stereotactic body radiation therapy (SBRT), which allows delivering a much higher dose per fraction while sparing critical structures compared to conventional external beam radiotherapy (cEBRT), has become more widely used, especially in the oligometastatic setting. Randomized controlled trials (RCTs) comparing the pain response rate of SBRT and cEBRT for bone metastases have shown conflicting results, as have four recent systematic reviews with meta-analyses of these trials. Possible reasons for the different outcomes between these reviews include differences in methodology, which trials were included, and the endpoints examined and how they were defined. We suggest ways to improve analysis of these RCTs, particularly performing an individual patient-level meta-analysis since the trials included heterogeneous populations. The results of such studies will help guide future investigations needed to validate patient selection criteria, optimize SBRT dose schedules, include additional endpoints (such as the time to onset of pain response, durability of pain response, quality of life (QOL), and side effects of SBRT), and better assess the cost-effectiveness and trade-offs of SBRT compared to cEBRT. An international Delphi consensus to guide selection of optimal candidates for SBRT is warranted before more prospective data is available.

摘要

放射治疗是控制骨转移患者疼痛的重要治疗方法。与传统的外照射放疗(cEBRT)相比,立体定向体部放疗(SBRT)能够在每一分量中给予更高的剂量,同时保护关键结构,因此应用越来越广泛,特别是在寡转移的情况下。比较 SBRT 和 cEBRT 治疗骨转移疼痛反应率的随机对照试验(RCT)结果相互矛盾,最近的四项系统评价和这些试验的荟萃分析也是如此。这些综述结果不同的可能原因包括方法学的差异、纳入的试验以及所检查和定义的终点不同。我们建议改进这些 RCT 的分析方法,特别是进行个体患者水平的荟萃分析,因为这些试验纳入的人群具有异质性。这些研究的结果将有助于指导未来的研究,以验证患者选择标准、优化 SBRT 剂量方案、纳入额外的终点(如疼痛反应的开始时间、疼痛反应的持久性、生活质量(QOL)和 SBRT 的副作用),并更好地评估与 cEBRT 相比,SBRT 的成本效益和权衡。在有更多前瞻性数据之前,需要进行国际 Delphi 共识,以指导 SBRT 的最佳候选者的选择。

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