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Clin Cancer Res:多发性骨髓瘤患者进行CAR T细胞治疗时可安全应用桥接放疗!

2021-09-20 Nebula MedSci原创

在接受 CART-BCMA 治疗的 r/rMM 患者中,桥接放疗似乎是安全可行的

多发性骨髓瘤仍是不能治愈的。靶向 B 细胞成熟抗原 (BCMA) 的嵌合抗原受体 (CAR) T 细胞 (CART-BCMA) 是一种很有前途的治疗复发性/难治性多发性骨髓瘤(r/rMM)的方法

r/rMM 患者常需要进行放疗(RT)以缓解症状。除了局部作用外,RT 还具有全身免疫调节作用。有研究表明,RT 调节可能会促进患者对 CART 治疗的敏感性,并降低肿瘤抗原阴性复发风险。部分患者在进行 CART-BCMA 治疗前需要放疗作为快速缓解症状或维持功能状态的桥梁(即桥接放疗)。

本研究报道了桥接放疗在接受 CART-BCMA 治疗的 r/rMM 患者中的安全性和可行性。

共有 25 名 r/rMM 受试患者在 3 个队列中接受了两剂 CART-BCMA 细胞联合或不联合环磷酰胺治疗。研究人员回顾性地分析了受试患者的毒性、治疗反应和 CART 的生产数据。

有 13 名受试者在接受 CART 输注前一年内未进行 RT 治疗(A 组)。8 名受试者在接受 CART 输注前一年内有进行 RT 治疗(B 组),从 RT 到单采的中位时间是 114 天(范围 40-301 天)。4 位受试者进行了桥接-RT(C 组),中位 RT 剂量为 22 Gy,从 RT 到 CART 输注的中位间隔时间是 25 天(范围 18-35 天)。

三组患者的总生存期

C 组的 4 级(G4)血液学毒性的发生率明显低于 A 组和 B 组(25% vs 61.5% vs 62.5%)。A 组、B 组和 C 组 3-4 级神经毒性的发生率分别是 7.7%、25%和 25%;3-4 级 CRS 的发生率分别是 38.5%、25%和 25%。

三组患者的无进展生存期

A 组、B 组和 C 组患者获得部分及更好缓解的比例分别是 54%、38%和 50%。单采前一年内和 100 天内给予 RT 均与生产过程中 T 细胞体外增殖速度较慢相关( p 值分别是 0.002 和 0.069)。但是,不同组之间 CART-BCMA 在体内的扩增速度相近。

综上所述,该研究表明,在接受 CART-BCMA 治疗的 r/rMM 患者中,桥接放疗似乎是安全可行的。但该研究结果还需要更大规模的研究进一步验证。

原始出处:

Shwetha H Manjunath, et al. The Safety of Bridging Radiation with Anti-BCMA CAR T-Cell Therapy for Multiple Myeloma. Clin Cancer Res September 15 2021 DOI:10.1158/1078-0432.CCR-21-0308

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    2021-12-20 jml2009
  2. [GetPortalCommentsPageByObjectIdResponse(id=1890299, encodeId=b5af189029938, content=<a href='/topic/show?id=760c430895a' target=_blank style='color:#2F92EE;'>#多发性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43089, encryptionId=760c430895a, topicName=多发性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=04d6114, createdName=jml2009, createdTime=Mon Dec 20 03:07:48 CST 2021, time=2021-12-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1197854, encodeId=ccfd119e85445, content=学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211111/81c0b64745c644319545ec26d7ef0b34/9ddb2864d5df4dd9bf4305e380bffc96.jpg, createdBy=c7835705079, createdName=屋顶瞄爱赏月, createdTime=Sun Feb 27 22:40:59 CST 2022, time=2022-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1053477, encodeId=c27a10534e7c6, content=<a href='/topic/show?id=dd85431162e' target=_blank style='color:#2F92EE;'>#多发性骨髓瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=151, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43116, encryptionId=dd85431162e, topicName=多发性骨髓瘤)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211210/ede9c51184aa4f54ae6c1164cfb8eeac/967dbf3eff2943c7bf3ccfec3a776ab0.JPG, createdBy=a33789389, createdName=病毒猎手, createdTime=Tue Sep 21 13:34:21 CST 2021, time=2021-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1053417, encodeId=1723105341ef8, content=似乎是安全可行的, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJibu7hwJqpmHiaJgLLmJmcwp0WDTxWI3vqPBO1Mloq21VBOPqziapyibYatvd2QWHWicolL1vbVZHgpRQ/132, createdBy=d16a2107341, createdName=JZ Yang, createdTime=Tue Sep 21 08:36:10 CST 2021, time=2021-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1053415, encodeId=7e321053415eb, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=99, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b7a31928393, createdName=学医无涯, createdTime=Tue Sep 21 07:42:11 CST 2021, time=2021-09-21, status=1, ipAttribution=)]
    2022-02-27 屋顶瞄爱赏月

    学习学习

    0

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    2021-09-21 JZ Yang

    似乎是安全可行的

    0

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    2021-09-21 学医无涯

    了解一下

    0

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