部分乳腺辐射治疗高分子风险早期乳腺癌
Alexander R Terry1, Lillian Boe2, Kate R Pawloski3
1Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York.
International journal of radiation oncology, biology, physics
|September 30, 2025
概括
部分乳房照射 (PBI) 是对全乳房照射 (WBI) 的安全替代方案,用于高瘤型DX复发得分 (ODX RS) 的患者. 这项研究发现,在这组患者中,PBI和WBI之间的局部复发率没有显著差异.
科学领域:
- 在瘤学瘤学.
- 辐射瘤学 辐射瘤学
- 基因组学就是基因组学.
背景情况:
- 部分乳腺照射 (PBI) 是对早期乳腺癌的全乳腺照射 (WBI) 的公认替代方案.
- 分子风险得分,如瘤型DX复发率得分 (ODX RS),越来越多地用于系统治疗决策.
- 基因组分析在指导放射治疗 (RT) 决策中的作用,特别是对于在高风险患者中使用PBI,需要进一步调查.
研究的目的:
- 在患有高ODXRS (> 25) 的患者中,比较PBI和WBI之间的瘤结局,特别是局部复发 (LR).
- 确定高ODXRS是否应该影响乳腺癌治疗中PBI和WBI之间的选择.
主要方法:
- 一个前性维护的机构数据库被用于识别乳房保存后使用PBI或WBI治疗的ODX RS>25的患者.
- 使用倾向分数匹配,根据临床病理特征 (1:5比率) 创建可比的PBI和WBI队列.
- 评估的主要终点是与放射治疗方法相关的局部复发 (LR) 的发生率.
主要成果:
- 该研究包括968名ODXRS>25的患者;匹配队列包括28名PBI患者和140名WBI患者,随访时间中位数为5.3年.
- 在PBI组中发生了三次LR事件 (两个在不同的象限),在WBI组中发生了五次LR事件.
- 72个月的累计LR发病率为PBI的7.9%,而WBI的4.8% (P = .6),表明没有统计学上显著的差异.
结论:
- 在高ODXRS患者中,局部复发率较低,在PBI和WBI之间没有显著差异.
- 这些发现表明,PBI可能是精心挑选的高基因组风险乳腺癌患者的可行选择.
- 需要进行更长的随访时间的大型研究,以确认PBI在这个人群中的安全性和有效性.
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