序列90Y选择性内部辐射疗法 (SIRT) 和立体体辐射疗法 (SBRT) 使用90Y基于PET的吸收剂量地图:第一阶段研究的临时分析
Daniel F Polan1, Justin K Mikell2, Kellen Fitzpatrick3
1Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan.
Advances in radiation oncology
|June 12, 2025
概括
这项研究将选择性内部辐射疗法 (SIRT) 与肝癌的立体体辐射疗法 (SBRT) 结合起来,发现毒性低,并建议进一步招募患者. 综合方法显示出改善治疗疗效的前景.
科学领域:
- 在瘤学瘤学.
- 辐射瘤学 辐射瘤学
- 肝胆道恶性瘤 肝胆道恶性瘤
背景情况:
- 选择性内部辐射疗法 (SIRT) 可能导致肝脏瘤的辐射剂量分布不均.
- 用SIRT低剂量治疗病变可能会限制治疗的有效性.
- 为了改善剂量覆盖,正在研究将SIRT与立体体辐射疗法 (SBRT) 结合起来.
研究的目的:
- 在1期临床试验中,评估在90Y-SIRT后6周添加SBRT的安全性和可行性.
- 评估肝脏毒性,特别是儿童-皮格评分增加≥2,作为主要终点.
- 根据SIRT后的剂量测量和剂量异质性来确定SBRT的资格.
主要方法:
- 一个前性的,单中心的第一阶段临床试验 (NCT04518748) 涉及患有无法切除的肝癌的患者.
- 标准治疗90Y-SIRT,然后使用90Y PET/CT进行剂量测量,以确定符合SBRT (<290 Gy平均吸收剂量) 的病变.
- 根据SIRT剂量值,SBRT可选地分成部分体,在10名参与者完成6个月的随访后进行中期分析.
主要成果:
- 在接受SIRT的24名患者中,15名患者患有SBRT的病变. 十名患者接受了SBRT (30-50 Gy).
- 仅有一名患者在SBRT后6个月内Child-Pugh得分增加了≥2.
- 在SBRT后报告了一例3级非实验室毒性病例.
结论:
- 临时分析表明,90Y-SIRT和SBRT的组合导致可接受的肝毒性,低于早期停止值.
- 该研究建议继续招募,以达到30名可评估患者的目标.
- 这种综合方法似乎是安全的,并且需要进一步研究肝癌治疗.
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