EASL 2014:LY2157299治疗晚期HCC的安全性剂量评估

2014-04-14 佚名 dxy

TGF-β信号转导与肝细胞癌(HCC)进展为中低分化肿瘤的过程有关,而抑制该信号转导通路可改善HCC患者整体生存率;LY2157299(LY)是一种TGF-β受体激酶抑制剂,可应用LY对HCC患者进行治疗。意大利巴里大学医学院传染病免疫内科Giannelli等对此进行了一项II期临床试验,旨在评估该药的安全剂量、疗效和药动学情况。 研究纳入对象为索拉非尼(SF)治疗后病情恶化者,或不能接受SF治疗

TGF-β信号转导与肝细胞癌(HCC)进展为中低分化肿瘤的过程有关,而抑制该信号转导通路可改善HCC患者整体生存率;LY2157299(LY)是一种TGF-β受体激酶抑制剂,可应用LY对HCC患者进行治疗。意大利巴里大学医学院传染病免疫内科Giannelli等对此进行了一项II期临床试验,旨在评估该药的安全剂量、疗效和药动学情况。

研究纳入对象为索拉非尼(SF)治疗后病情恶化者,或不能接受SF治疗的晚期HCC患者。研究对象Child-Pugh分级为HCC A/B7,AFP≥1.5×ULN,ECOG评分≤1,可测量病灶(RECIST 1.1)。

对患者间断给予LY 14天,28天一周期。将患者分为两个LY给药剂量组,分别为A组 160mg/d、B组 300mg/d。主要观察终点为病情发生进展的时间(TTP)和每种剂量给药下生物标志物的变化情况;次要观察终点包括毒性(CTCAE,V 4.0)、药代动力学和总生存期。

结果显示,109例入组患者(A组 37人;B组72人)的基线特征A组/B组分别为:中位年龄61岁/63岁;PS=0.60%/53%;病因为HCV感染30%/38%、HBV感染27%/24%、酒精性24%/25%;之前接受过SF治疗78%/83%;AFP≥200ng/ml 59%/63%。

总体中位TTP为12周,A组为12.1周、B组为10.0周。初次接受SF治疗者TTP为18.3周。有24%患者出现AFP下降超过20%。最常见的3/4级相关不良反应为:中性粒细胞减少(N = 3)、贫血(N = 3)、疲劳(N = 1)。

按比例进行剂量暴露,LY剂量160mg/d和300mg/d的AUC0-∞分别为3.8mg·h/L和7.0mg·h/L,不同HCC患者间暴露量有轻度差异。

研究表明,300mg/d的LY给药剂量具有可控范围内的毒性和抗肿瘤活性,该剂量可用于今后HCC治疗参考给药的相关研究。

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    2014-04-16 智智灵药
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    2014-04-16 kord1983
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    2014-04-16 lq1771

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