用抗CD3×抗GD2双特异抗体武装T细胞向耐火/复发性神经母细胞瘤和骨肉瘤
Maxim Yankelevich1,2, Archana Thakur3, Shakeel Modak4
1St. Christopher's Hospital for Children, Philadelphia, Pennsylvania, USA yankelevic@gmail.com LGL4F@uvahealth.org.
Journal for immunotherapy of cancer
|March 22, 2024
概括
抗CD3xanti-GD2双特异抗体武装T细胞 (GD2BATs) 在治疗神经母细胞瘤等儿科癌症方面显示出安全性和有效性. 这种疗法证明了可控的副作用和改善的生存率,支持进一步的临床试验.
科学领域:
- 免疫治疗是一种免疫疗法.
- 儿科瘤学 儿科瘤学
- 抗体工程 抗体工程
背景情况:
- 神经母细胞瘤 (NB) 患者具有最小的残留疾病受益于抗GD2单克隆抗体.
- 临床前研究表明,抗CD3xanti-GD2双特异抗体武装T细胞 (GD2BATs) 对GD2+细胞系的高细胞毒性.
研究的目的:
- 研究GD2BATs在患有复发性/耐药性神经母细胞瘤和其他固体瘤的儿童中的安全性和临床益处.
- 在I/II期临床试验中评估GD2BAT的最大耐受剂量和初步疗效.
主要方法:
- 一项I期剂量升级研究 (NCT02173093) 招募了9名患有NB,骨肉瘤和脱质小圆细胞瘤的患者.
- 患者接受了GD2BATs输液 (40-160x10^6细胞/千克/输液) 配合白蛋白-2和粒细胞巨细胞殖民地刺激因子.
- 第二阶段专注于NB患者,剂量为160x10^6 GD2BATs/kg/输液.
主要成果:
- 在第一阶段没有观察到剂量限制性毒性;所有患者都出现了轻度可控的细胞因子释放综合征.
- 平均整体存活时间为18.0个月 (第一阶段) 和31.2个月 (第二阶段),总共21.1个月.
- 一名NB患者获得了完全的骨髓反应;在12名可评估的II期患者中,有3名患者在长期稳定疾病下显示出临床益处. 超过50%的人表现出增强的免疫反应.
结论:
- GD2BAT是安全的,直到160x10^6细胞/千克/输液.
- 治疗后内源性免疫反应的证据支持进一步的研究.
- 需要进行更大规模的II期临床试验,以进一步评估GD2BATs的疗效.
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