Blood:自体干细胞移植后予以CD19 CAT T细胞治疗非霍奇金淋巴瘤!

2019-07-03 MedSci MedSci原创

大剂量化疗后进行自体干细胞移植(HDT-ASCT)是复发性或化疗难治性弥漫性大B细胞淋巴瘤(rel/ref DLBCL)的标准疗法。但只有50%的患者用这种方法治愈。HDT-ASCT后予以CD19特异性嵌合抗原受体(CAR) T细胞是否可以提高患者的无进展存活期 (PFS)? Craig S. Sauter等人对此进行研究。

中心点:

HDT-ASCT后予以19-28z CAR-T细胞会增加重度神经毒性的发生率,高达67%。

增加19-28z CAR-T细胞中效应T细胞的比例或可延缓HDT-ASCT后的病程进展。

摘要:

大剂量化疗后进行自体干细胞移植(HDT-ASCT)是复发性或化疗难治性弥漫性大B细胞淋巴瘤(rel/ref DLBCL)的标准疗法。但只有50%的患者用这种方法治愈。HDT-ASCT后予以CD19特异性嵌合抗原受体(CAR) T细胞是否可以提高患者的无进展存活期 (PFS)? Craig S. Sauter等人对此进行研究。

研究人员招募对挽救治疗敏感的FDG-PET(+)或骨髓受累的低风险rel/ref侵袭性B-NHL患者,予以BEAM条件下的HDT-ASCT,并在移植后第2天和第3天予以19-28z CAR-T细胞治疗。

共招募到15位患者,在CAR-T的两种剂量水平(5 x106和1 x107 19-28z CAR-T/kg)时都观察到剂量限制性毒性。10位患者出现CAR T细胞诱导的神经毒性和或细胞因子释放综合征(CRS),这两者与CAR T细胞持续性增加有关(p=0.05),但与CAR T细胞扩增峰值无关。血清IFN-g升高和IL-10可能与毒性有关。2年PFS仅30%(95% CI: 20-70%)。两名病程进展(POD)的患者再次活检时为CD19阴性。予以幼稚型(CD45RA+CCR7+)减少的CD4+和CD8+ CAR T细胞治疗的个体可获得较好的PFS(p=0.02和0.04)。CAR T细胞扩增峰值、持续性或细胞因子改变和PFS无关。

总而言之,HDT-ASCT予以19-28z CAR T细胞与可逆性神经毒性和CRS的高发生率相关。HDT-ASCT后,予以CD4+和CD8+效应细胞或可提高疾病的控制情况。表型的选择和/或多重灌注可能会是下一个临床试验的重点。

原始出处:

Craig S. Sauter, et al. CD19 CAR T Cells Following Autologous Transplantation in Poor Risk Relapsed and Refractory B cell non-Hodgkin Lymphoma. Blood 2019 :blood.2018883421; doi: https://doi.org/10.1182/blood.2018883421

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    2019-07-06 独孤立克

    干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦

    0

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    2019-07-05 dingxiaobo
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    2019-07-03 SAS

    长见识了

    0

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研究认为,自体干细胞移植后Ixazomib治疗可延长患者无进展生存期

Blood:自体干细胞移植后发生治疗相关的骨髓肿瘤的早期检测。

治疗相关的骨髓肿瘤(tMNs)是可发生于进行自体造血干细胞移植(ASCT)患者的重度副反应。本研究对收集的tMN样本进行全外显子测序(WES)和深度靶向测序(TDS)从分子水平探究ASCT后tMN的发展。WES发现tMN中突变的数量明显比MDS的新发突变要多的多(中位值27 vs 12,p=0.001)。在tMN中发现的突变没有明显的年龄特征,不同于在新发的MDS中发现的突变,提示一种不同的突变机