在Rituximab和第三方LMP特异性T细胞后对EBV的持久免疫力:儿童瘤学小组研究
Birte Wistinghausen1,2,3, Keri Toner1,2,3, Donald A Barkauskas4,5
1Center for Cancer and Blood Disorders, Children's National Hospital, Washington, DC.
Blood advances
|January 1, 2024
概括
这项研究表明,使用潜膜蛋白特异性T细胞 (LMP-TCs) 进行T细胞治疗是对儿科移植后淋巴增殖性疾病 (PTLD) 的可行且安全的治疗方法. 该疗法显示出有希望的反应率和生存率,提供了潜在的无化疗选择.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 移植医学 移植医学 移植医学
背景情况:
- 儿科固体器官移植 (SOT) 接受者的移植后淋巴增殖性疾病 (PTLD) 涉及由于免疫力受损而感染爱斯坦-巴尔病毒 (EBV+) B 细胞的不受控制的增殖.
- 目前PTLD的治疗策略通常涉及化疗,这可能会产生显著的副作用.
研究的目的:
- 评估使用Rituximab和第三方潜膜蛋白特异性T细胞 (LMP-TCs) 治疗儿科SOT接受者PTLD的可行性,安全性和临床/免疫生物学结果.
主要方法:
- 小儿SOT接受者新诊断的 (ND) PTLD对rituximab无反应或复发/耐药 (R/R) 疾病接受LMP-TCs.
- 评估了可行性,安全性 (不良事件),临床反应 (整体反应率 - ORR) 和免疫生物学结果 (T细胞持久性).
主要成果:
- LMP-TC治疗是可行的,15名患者中有13名患者在14天内接受治疗.
- 一个LMP-TC周期后的整体应答率 (ORR) 为ND的70%和R/R患者的20%. 跨周期的最佳ORR为53%,2年整体存活率为70.7%.
- 治疗一般耐受良好,副作用可控,包括罕见的排斥和细胞因子释放综合征. 收养T细胞转移显示持续时间长达8个月.
结论:
- 第三方LMP-TCs代表了对儿科PTLD的可行和潜在有效的治疗选择,特别是对于新诊断的患者,提供一种无化疗的方法.
- 这种新型T细胞疗法可以在合作小组临床试验环境中进行.
- 需要进行进一步的研究,以优化治疗方案,并扩大在PTLD管理中使用基于T细胞的疗法.
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