校准的CAR信号使大B细胞淋巴瘤的低剂量治疗成为可能
Jae Park1, M Lia Palomba1, Karlo Perica1
1Memorial Sloan Kettering Cancer Center.
Research square
|July 16, 2024
概括
使用校准的1XX信号模块进行的一种新型CAR T细胞疗法在大型B细胞淋巴瘤中显示出高响应率. 这种1XX CAR T细胞疗法在低剂量下显示出有效性,安全性可控.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞疗法细胞疗法
背景情况:
- 传统的CD19向的化学抗原受体 (CAR) T细胞使用CD28/CD3z或4-1BB/CD3z信号模块.
- 复发性/耐药性大B细胞淋巴瘤 (LBCL) 仍然是一个重要的未满足的医疗需求,需要新的治疗方法.
研究的目的:
- 评估一种针对CD19的新型CAR T细胞疗法与校准的1XX信号模块在复发/耐药LBCL患者中的安全性和有效性.
- 研究1XX CAR T细胞疗法在低细胞剂量下实现高响应率的潜力.
主要方法:
- 首次在人身上进行的一期临床试验,涉及复发/耐药LBCL的患者.
- 研究了4种19(T2)28z-1XXCAR T细胞的双倍剂量水平,从25x10^6CAR T细胞开始.
- 评估了患者的反应,包括整体响应率 (ORR) 和完整响应率 (CR),以及无事件生存率 (EFS),细胞因子释放综合征 (CRS) 和免疫效应细胞相关神经毒性综合征 (ICANS).
主要成果:
- 整体队列 (n=28) 实现了82%的ORR和71%的CR率.
- 接受最低剂量25x10^6 CAR T 细胞治疗的患者显示88%的ORR和75%的CR率.
- 随访时间中位数为24个月,一年的EFS为61%. 3级以上的CRS和ICANS发生率低,分别为4%和7%.
结论:
- 1XX CAR T细胞疗法在复发/耐药LBCL患者中显示出显著的疗效和良好的安全性.
- 1XX CAR的校准功效使低细胞剂量可有效治疗,这表明它可能适用于其他血液性恶性瘤,固体瘤和自身免疫性疾病.
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