在HLA-A*02患者中治疗PRAME高级固体瘤的自主T细胞疗法:一期1试验
Martin Wermke1,2, Dejka M Araujo3, Manik Chatterjee4
1Department of Medicine I, University Hospital Carl Gustav Carus TU Dresden, Dresden, Germany.
Nature medicine
|April 9, 2025
概括
经过T细胞受体 (TCR) 工程的T细胞显示出通过向细胞内抗原来治疗固体瘤的前景. IMA203在患有复发性或耐火性固体瘤 (包括黑色素瘤) 的患者中显示出令人鼓舞的抗瘤活性和安全性.
科学领域:
- 在瘤学瘤学.
- 免疫治疗是一种免疫疗法.
- 细胞疗法细胞疗法
背景情况:
- 由T细胞受体 (TCR) 改造的T细胞提供了一种针对细胞内瘤抗原的策略,这是固体瘤治疗的关键挑战.
- 之前对TCR T细胞的试验显示出有限的临床活性,突出显示出需要新的治疗方法.
- 在黑色素瘤中优先表达抗原 (PRAME) 是一种被认为是固体瘤治疗的潜在标的细胞内抗原.
研究的目的:
- 评估IMA203 TCR T细胞治疗的安全性,耐受性和确定最大耐受剂量 (MTD).
- 评估IMA203在PRAME阳性实体瘤患者中的临床活性,包括反应率和反应持续时间.
- 在患者中研究IMA203的药理动力学,包括T细胞持久性和贩运.
主要方法:
- 进行了第一次在人体上进行的,多中心的,开放的,第一期剂量升级/降级试验 (NCT03686124).
- 患有PRAME阳性复发性/耐药性固体瘤的患者接受了自身的IMA203 TCR T细胞.
- 评估了安全性,MTD,整体反应率 (ORR),确认的ORR (cORR) 和T细胞持久性.
主要成果:
- IMA203是安全的,并且耐受性很好;没有达到MTD. 严重的细胞因子释放综合征发生在4.9%的患者中;没有观察到严重的神经毒性.
- 在多种固体瘤类型中观察到52.5%的整体应答率 (u/cORR) 和28.9%的确认ORR (cORR).
- IMA203 T细胞表现出快速移植,长期持久性,并被贩运到瘤中. 更高的剂量与确认反应的增加相关,更高的PRAME表达/T细胞透与更深层次的反应和更长的无进展生存时间有关.
结论:
- IMA203在PRAME阳性复发性或耐火性固体瘤患者中显示出有前途的抗瘤活性和有利的安全概况.
- 该疗法显示出治疗各种固体瘤的潜力,包括耐火性黑色素瘤,需要在更大的试验中进一步调查.
- IMA203 TCR T细胞疗法代表了针对细胞内瘤抗原的可行方法,并改善了晚期固体瘤患者的治疗结果.
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