Acta Haematol:阿扎胞苷、维奈托克和曲美替尼在携带 RAS 通路激活突变的复发或难治性 AML 中的 II 期研究结果

2022-07-07 网络 网络

RAS 通路突变是对急性髓细胞白血病 (AML) 治疗产生耐药性的常见机制。曲美替尼是一种口服 MEK 抑制剂,已被证明在复发/难治性 AML 中具有单药活性,并且与维奈托克具有临床前协同作用。

RAS 通路突变是对急性髓细胞白血病 (AML) 治疗产生耐药性的常见机制。曲美替尼是一种口服 MEK 抑制剂,已被证明在复发/难治性 AML 中具有单药活性,并且与维奈托克具有临床前协同作用。一研究团队携带 RAS 通路激活突变的复发或难治性 AML 患者中进行了阿扎胞苷、维奈托克和曲美替尼联合用药的单中心、开放标签、2 期试验。以下是实验的结果。

研究有16 名患者接受了治疗。患者接受了中位数 4 次治疗前的大量预处理;13 名 (81%) 曾接受过使用维奈托克的去甲基化剂 (HMA),8 名 (50%) 曾接受过干细胞移植。

表1:非血液学事件,包括2例患者1-2级不良事件和所有3- 5级不良事件

图:生存结果。A)整个研究人群的总生存率。B)总生存期按治疗反应分层

四名患者(25%)有反应(CR,n=1;CRi,n=1;MLFS,n=2)。之前未接受 HMA 加维奈托克治疗的 3 名患者中有 2 名(67%)有反应;相比之下,之前接受过 HMA 加维奈托克治疗的 13 名患者中只有 2 名(15%)有反应。中位 OS 为 2.4 个月,6 个月 OS 率为 31%。50% 的患者发生相关的 3-4 级不良事件,50% 的患者需要调整曲美替尼的剂量。表3:

表2:任何级别的不良事件,至少可能与曲美替尼有关

总的来说,研究人员认为,阿扎胞苷、维奈托克和曲美替尼的组合在复发/难治性 AML 患者中仅具有适度的活性,其反应率与之前报道的曲美替尼单药治疗相似。用这种组合观察到明显的毒性。鉴于 RAS 通路突变在介导 AML 治疗耐药性中的既定作用,未来仍需要对该通路的耐受性更好、活性更高的抑制剂进行研究。

 

原始出处:

Desikan SP, Ravandi F, Pemmaraju N, Konopleva M, Loghavi S, Jabbour EJ, Daver N, Jain N, Chien KS, Maiti A, Montalban-Bravo G, Kadia TM, Macaron W, DeLumpa R, Kwari M, Borthakur G, Short NJ. A Phase II Study of Azacitidine, Venetoclax and Trametinib in Relapsed or Refractory AML Harboring RAS Pathway-Activating Mutations. Acta Haematol. 2022 Jun 17. doi: 10.1159/000525566. Epub ahead of print. PMID: 35717939.

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    2023-06-03 changfy
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    2022-10-30 windight
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    2022-09-02 小小医者

    #阿扎胞苷##维奈托克##曲美替尼#在携带 #RAS通路#激活突变的复发或难治性 #急性髓细胞白血病# 中的 II 期研究结果

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    2022-07-08 fengyi812
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    2022-07-08 freve

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