Clin Cancer Res:瑞普替尼四线治疗可显著改善晚期胃肠道间质瘤患者的预后

2022-07-04 MedSci原创 MedSci原创

瑞普替尼作为四线或后线治疗可有效改善中国晚期GIST患者的预后

胃肠道间质瘤 (GIST) 是胃肠道最常见的间充质细胞肿瘤,占胃肠道恶性肿瘤的1%-3%。大部分GIST细胞的生长是由酪氨酸激酶受体原癌基因、酪氨酸激酶受体(KIT)或血小板源性生长因子受体α(PDGFRA)的激活突变所驱动的。

这是一项多中心、单臂、开放标签的2期研究,旨在评估瑞普替尼在中国晚期GIST患者中作为四线或后线治疗的疗效、安全性和药代动力学(PK)。

招募了既往经伊马替尼、舒尼替尼和至少一种其他药物治疗后进展的GIST患者,予以瑞普替尼 150mg/日,直到病情进展。主要终点是无进展生存期(PFS)。次要终点包括客观缓解率(ORR)和总生存期(OS)。安全性终点包括不良反应的发生率和严重性。


获得缓解的7位患者的缓解持续时间

2020年4月至2020年8月,共招募了39位患者,均纳入了安全性分析,其中38位被纳入了疗效分析。截止2021年2月26日,中位无进展生存期是7.2个月。客观缓解率是18.4%。37位(94.9%)患者经历了治疗相关的不良反应。大部分不良反应是1-2级的。共有6位患者经历3-4级的治疗相关不良反应。


治疗相关不良反应发生情况

总之,该研究结果显示,瑞普替尼作为四线或后线治疗可有效改善中国晚期胃肠道间质瘤患者的预后。瑞普替尼的疗效、安全性和药代动力学与在全球患者人群中报道的一致。

 

原始出处:

Jian Li, Shirong Cai, Yongjian Zhou, et al. Efficacy and Safety of Ripretinib in Chinese Patients with Advanced Gastrointestinal Stromal Tumors as a Fourth- or Later-Line Therapy: A Multicenter, Single-Arm, Open-Label Phase II Study. Clin Cancer Res 2022; https://doi.org/10.1158/1078-0432.CCR-22-0196

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