AJH:针对 B 细胞成熟抗原的 CAR-T 细胞疗法对复发/难治性多发性骨髓瘤有效,包括体能状态不佳的病例

2022-05-14 网络 网络

单细胞测序表明治疗效果可能与 mTORC1 信号传导有关。因此,HDS269B 疗法对 RRMM 患者是安全有效的,即使是 ECOG 3-4 的患者。

多发性骨髓瘤(MM)是一种以浆细胞克隆增殖为特征的造血恶性肿瘤。MM治疗的进展,显著延长了患者的无进展生存期(PFS)和总生存期(OS)。但复发和/或难治性多发性骨髓瘤(RRMM)患者的死亡率仍然很高,这表明需要新的治疗方法。嵌合抗原受体(CAR)-T细胞治疗是RRMM2最有希望的治疗方法之一。在一项开放标签、单臂、I/II 期临床试验中,研究人员评估了抗 B 细胞成熟抗原 (BCMA) 嵌合抗原受体 (CAR)-T 细胞 (HDS269B) 疗法在 49 例复发/难治性多发性硬化症中的疗效骨髓瘤 (RRMM) 患者,包括 20 名东部肿瘤协作组 (ECOG) 3-4 级的患者的效果。

HDS269B输液后(9×10 6 CAR +细胞/kg),17 名患者 (34.69%, 11 ECOG 0-2, 6 ECOG 3-4) 出现细胞因子释放综合征 [1-2 级:14 名患者 (28.57%);3 级:3 名患者 (6.12%)]。客观缓解率 (ORR) 为 77%,完全缓解 (CR) 达到 47%。15 名患者出现持续反应>12 个月,1 名患者超过 38 个月。

表:49例使用抗bcma CAR-T细胞治疗的患者的不良事件(AEs)

中位无进展生存期 (PFS) 和总生存期 (OS) 分别为 10 个月 (95% CI 5.3–14.7) 和 29 个月 (95% CI 10.0–48.0)。PFS(12 个月)和 OS(18 个月)率分别为 41.64% 和 62.76%。在 ECOG 0-2 和 3-4 的患者中,ORR 分别为 79.31% (23/29) 和 75.0% (15/20),PFS 分别为 15 个月 (95% CI 5.4-24.6) 和 4 个月 (95% CI 0 –11.7)。ECOG 0-2 级患者的 OS 未达到,但 ECOG 3-4 级患者的 OS 为 10.5 个月(95% CI 0-22)。

 

图:灌注BCMA CAR-T细胞的RRMM患者的生存。无进展生存期(A)和总生存期(B)的Kaplan-Meier分析

研究表明,HDS269B的安全性和有效性与其他CAR- t疗法在以前的试验中评估的是有可比性的。值得注意的是,HDS269B疗法对表现状态较差的RRMM患者显示了很好的疗效和安全性(ECOG 3 4),这表明这种CAR-T疗法可以使这些患者受益,但还需要在更大的临床试验中得到验证。

总的来说,单细胞测序表明治疗效果可能与 mTORC1 信号传导有关。因此,HDS269B 疗法对 RRMM 患者是安全有效的,即使是 ECOG 3-4 的患者。

 

原始出处:

Du, JWei, RJiang, S, et al. CAR-T cell therapy targeting B cell maturation antigen is effective for relapsed/refractory multiple myeloma, including cases with poor performance statusAm J Hematol202219. doi:10.1002/ajh.26583.

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    2023-03-06 仁者大医
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    2022-10-28 liubm568
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    2022-10-05 jml2009
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    2022-05-14 freve
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