在 Y220C 突变瘤中对 Rezatapopt 一种 p53 活性化剂进行第一阶段研究
Ecaterina E Dumbrava1, Geoffrey I Shapiro2, Aparna R Parikh3
1University of Texas M.D. Anderson Cancer Center, Houston.
The New England journal of medicine
|February 25, 2026
概括
雷扎塔波普特是一种新型的p53活性剂,在患有TP53Y220C突变的实体瘤患者中表现出抗瘤活性. 推的第二阶段剂量为每天一次2000毫克,有恶心和吐等可控的副作用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 雷扎塔波普特是一种正在研究中的,一流的口服选择性p53活性剂.
- 它特别针对Y220C突变的p53,稳定其野生类型的形状并恢复功能.
研究的目的:
- 为了确定rezatapopt的最大耐受剂量 (MTD) 和推的第二阶段剂量 (RP2D).
- 评估rezatapopt在患有晚期固体瘤的患者中的安全性,耐受性和初步疗效.
主要方法:
- 第1阶段,单组,剂量升级和剂量优化研究.
- 77名经过大量预治疗的,局部晚期或转移性固体瘤和TP53 Y220C突变的患者接受了rezatapopt.
- 主要终点:剂量限制性毒性 (DLT) 和不良事件 (AE). 二次终点:初步疗效和药理动力学.
主要成果:
- 在MTD是1500毫克每天两次. 确定RP2D是2000毫克每天一次与食物一起.
- 最常见的副作用:恶心 (58%),吐 (44%),肌素增加 (39%),疲劳 (39%),贫血 (36%). 3级以上的贫血发生在16%的患者中.
- 总体响应率 (ORR) 为20%. 在接受≥1150毫克的KRAS野生型瘤患者中,ORR为30%. 在卵巢和乳腺癌中观察到的反应.
结论:
- 雷扎塔波普特在多种瘤类型中显示出抗瘤活性,支持其作为p53再激活疗法的潜力.
- 恶心和吐是最常见的不良事件;大多数是可控的,特别是当与食物一起服用时.
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