全基性HSCT用于巩固儿科耐火或复发的ALK阳性形大细胞淋巴瘤
Fabian Knörr1, Martin Zimmermann2, Peter Bader3
1University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany.
Blood advances
|February 3, 2026
概括
针对小儿ALK阳性可塑性大细胞淋巴瘤的全源干细胞移植显示出良好的生存率. 没有T细胞枯竭的非相关捐赠者改善了结果,支持无TBI条件.
科学领域:
- 儿科瘤学 儿科瘤学
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
背景情况:
- 全基性造血干细胞移植 (HSCT) 是儿科耐火性或早期复发性形大细胞淋巴瘤 (ALCL) 的关键整合策略.
- 免疫系统的作用对于持续控制HSCT后的疾病至关重要.
- 了解影响这群人群HSCT结果的因素对于改善治疗疗效至关重要.
研究的目的:
- 追溯分析调节方案类型,供体来源和体内T细胞枯竭对中枢神经系统负性ALCL复发儿童和青少年HSCT结果的影响.
- 评估与特定移植变量相关的无进展生存 (PFS) 和总生存 (OS).
- 为了比较基于全身辐射 (TBI) 和基于化疗的调节之间的结果,以及匹配的兄弟捐赠者与与T细胞枯竭无关的捐赠者之间的结果.
主要方法:
- 在2005年至2022年间,对57名中枢神经系统负性ALCL复发儿童的基于人口的队列进行了回顾性分析,这些儿童接受了HSCT.
- 收集了有关调节方案 (TBI与化疗,包括降低毒性调节[RTC]) 的数据,供体类型 (匹配的兄弟姐妹与无关的兄弟姐妹) 和T细胞枯竭 (子抗人类T淋巴细胞球蛋白[ATLG]) 的数据.
- 评估无进展生存率 (PFS),总生存率 (OS) 和移植与宿主无疾病和无事件生存率 (GEFS).
主要成果:
- 三年PFS和OS分别为84±10%和91±8%. 基于TBI和基于化疗的调节之间没有观察到PFS或GEFS的显著差异.
- 与没有ATLG的匹配兄弟捐赠者的患者相比,接受来自非相关捐赠者的移植并接受ATLG预防的患者表现出明显优异的PFS (94±7% vs. 67±22%) 和GEFS (82±13% vs. 44±24%).
- 前线化疗期间的进展,最小残留疾病和HSCT的缓解状态与结果无关. 非复发性死亡率为5.6%,II-IV级急性GvHD为25%.
结论:
- 这项研究支持在儿科ALCL复发中使用无TBI调节方案.
- 从无关的捐赠者与ATLG预防的移植与改善的PFS和GEFS有关,这表明在这种情况下T细胞枯竭的好处.
- 这些发现对优化小儿ALK阳性形大细胞淋巴瘤的HSCT策略有意义.
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