JCO:Ibrutinib治疗慢性淋巴细胞白血病后失败怎么办?抗CD19抗体提供新思路

2017-07-19 xuyihan MedSci原创

近日在JCO上发表的一篇文章评估了抗-CD19嵌合抗体受体—修饰T(CAR-T)细胞治疗用于先前接受过ibrutinib的慢性淋巴细胞白血病(CLL)患者的安全性和可行性。

近日在JCO上发表的一篇文章评估了抗-CD19嵌合抗体受体—修饰TCAR-T)细胞治疗用于先前接受ibrutinib的慢性淋巴细胞白血病CLL)患者的安全性和可行性。

24CLL患者接受了淋巴细胞化疗和抗-CD19 CAR-T治疗,分为3个剂量水平(2 × 105, 2 × 106 or 2 × 10CAR-T cells/kg)。19例患者在接受ibrutinib治疗时出现疾病进展,3例患者ibrutinib不耐受,还有2例患者接受ibrutinib治疗时未发生疾病进展。6例患者venetoclax难治,23例有复杂染色体核型和/17p缺失。

 CAR-T细胞灌注后4周,由国际研讨会对慢性淋巴细胞白血病(IWCLL)标准确定的总体反应率(完全反应(CR)和/或部分反应(PR))为71%17/24)。20例(83%)患者出现了细胞因子释放综合征,8例(33%)患者出现神经毒性,虽然是可逆的但是1例患者出现致命结果。24例中20例接受环磷酰胺和氟达拉滨化疗和CD19 CAR-T细胞达到或者低于最大耐受量(≤2×106 CAR-T cells/kg)

 前文所指19例患者,IWCLL确认静脉注射后4周的总体反应率为74%CR4/1921%;PR10/1953%)。17例在CAR-T治疗前出现骨髓疾病的患者中有15例(88%)在治疗后流式细胞仪显示没有病灶,其中12例患者接受了深度IGH测序,7例(58%)骨髓检查未及恶性IGH测序,而这些患者中在CAR-T细胞免疫治疗后经IWCLL确认无进展生存期和总体生存期为100%(中位随访时间为6.6个月)。

由此可见,CD19 CAR-T细胞治疗对于接受ibrutinib治疗失败后的高危CLL患者疗效显著。

原始出处:

Cameron J. Turtle.et al. Durable Molecular Remissions in Chronic Lymphocytic Leukemia Treated With CD19-Specific Chimeric Antigen Receptor–Modified T Cells After Failure of Ibrutinib.J CLIN ONCOL.2017.

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    2017-09-06 晓辰
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    2017-12-08 lidong40
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    2017-07-21 dingxiaobo
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    2017-07-21 xsm924

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