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Blood:艾曲波帕治疗继发于LPDs的ITP

2019-10-03 MedSci MedSci原创

继发于慢性淋巴增殖性疾病(LPD)的免疫性血小板减少症(ITP)对常规治疗反应较差。研究人员开展一多中心的2期前瞻性研究,为期24周,招募了18位继发于LPD的ITP患者(sITP),评估艾曲波帕用于这类患者的疗效和安全性。

中心点:

继发性ITP使多达5%的慢性LPDs患者的临床过程复杂化,并对常规治疗反应较差

对于大部分病例,Eltrombopag(艾曲波帕)能有效地将血小板计数增加到安全水平,从而推迟不必要的化疗

摘要:

继发于慢性淋巴增殖性疾病(LPD)的免疫性血小板减少症(ITP)对常规治疗反应较差。研究人员开展一多中心的2期前瞻性研究,为期24周,招募了18位继发于LPD的ITP患者(sITP),评估艾曲波帕用于这类患者的疗效和安全性。

有缓解的病人进入了一个长达5年的扩展研究。纳入标准为不需要细胞毒性药物治疗,且血小板计数<30×109/L或有出血症状。艾曲波帕的起始剂量为50mg/天,最大剂量为150mg/天。主要结点是治疗4周后的血小板反应(R)。

受试患者的中位年龄为70岁(43-83),其中14位为慢性淋巴细胞白血病(CLL),2位为经典霍奇金淋巴瘤,2位为原发性巨球蛋白血症。所有患者接受过ITP治疗。4周时的缓解率达到78%(95% CI 58-97),50%的患者获得完全缓解(CR,95% CI 43-57);24周时,缓解率和完全缓解率分别为59%和30%。

艾曲波帕的中位暴露时间为16个月,4周和24周时的中位剂量均是50mg(25-100和25-150).无2级以上的副作用发生。

综上所述,艾曲波帕用于继发于LPDs的ITP患者时,耐受性良好,疗效较明显。

原始出处:

Carlo Visco, et al.Eltrombopag for immune thrombocytopenia secondary to chronic lymphoproliferative disorders: a phase 2 multicenter study.Blood 2019 :blood.2019001617; doi: https://doi.org/10.1182/blood.2019001617

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    2019-10-17 lqvr
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    2019-10-08 feifers
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    2019-10-05 whmdzju
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