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Blood:Moxetumomab pasudotox,抗CD22抗体,可有效根除毛细胞白血病的微小残留病灶

2018-03-03 MedSci MedSci原创

Moxetumomab pasudotox,是重组抗CD22免疫毒素,在既往探究其对于复发性/难治性毛细胞白血病(HCL,28位患者)患者的疗效的I期试验中,可获得46%的完全缓解(CRs)。但HCL患者获得CR后,微小残留病灶(MRD)的意义尚不明确。研究人员进行一包含21位患者的扩展队列,予以患者Moxetumomab pasudotox治疗,50ug/kg/2日 连续用药3次,4周一疗程。这

Moxetumomab pasudotox,是重组抗CD22免疫毒素,在既往探究其对于复发性/难治性毛细胞白血病(HCL,28位患者)患者的疗效的I期试验中,可获得46%的完全缓解(CRs)。但HCL患者获得CR后,微小残留病灶(MRD)的意义尚不明确。

研究人员进行一包含21位患者的扩展队列,予以患者Moxetumomab pasudotox治疗,50ug/kg/2日 连续用药3次,4周一疗程。这21位患者加上之前报道的接受该剂量的12位患者,均接受了143个疗程,且均为出现剂量限制性毒性。前后相结合,这33位患者中,64%的患者获得完全缓解,总体反应率为88%,完全缓解持续时间中位值是42.2个月。32位患者进行骨髓穿刺取脑脊液进行流式细胞术检测MRD,9位MRD阳性患者的CR持续时间中位值是13.5(4.9-42.4)个月 vs 11位MRD阴性患者的是42.1(24.0-69.2)个月(p<0.001)。在MRD阴性的CRs,在本研究结束时,MRD阴性的获得完全缓解的患者中,有10位患者仍处于完全缓解状态,而且其中9例,仍无MRD。

据了解,Moxetumomab pasudotox是唯一一种可消除很大比例HCL患者的MRD的非化疗方案,延长完全缓解持续时间。虽然早期存在中和抗体,但重复给药可提高活性药物水平,而且不会增加免疫原性类的毒性。Moxetumomab pasudotox的疗效和安全性支持继续在HCL患者中进行相关的临床III期试验。

原始出处:

Robert J. Kreitman, et al.Minimal residual hairy cell leukemia eradication with moxetumomab pasudotox: phase I results and long-term follow-up.Blood  2018  :blood-2017-09-803072;  doi: https://doi.org/10.1182/blood-2017-09-803072

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    2018-09-21 风铃830
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    2018-06-30 snf701207
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    2018-03-03 虈亣靌

    学习了.获益匪浅.感谢分享

    0

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    2018-03-03 wqkm

    ^_^^_^^_^

    0

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