在固体瘤和血液癌症中向PD-1和LAG-3的双特异分子tebotelimab:一期1试验
Jason J Luke1, Manish R Patel2, George R Blumenschein3
1UPMC Hillman Cancer Center and University of Pittsburgh, Pittsburgh, PA, USA. lukejj@upmc.edu.
Nature medicine
|October 19, 2023
概括
一种新型双特异性抗体Tebotelimab在晚期癌症中显示出有前途的抗瘤活性,包括PD-1或CAR-T耐火性疾病. 对于单疗法和组合治疗,确定了推的第二阶段剂量.
科学领域:
- 免疫治疗是一种免疫疗法.
- 在瘤学瘤学.
- 临床试验 临床试验
背景情况:
- 针对PD-1和LAG-3的免疫检查点抑制剂在癌症治疗中至关重要.
- 德博特利马布是一种双特异性DART分子,旨在阻断PD-1和LAG-3通路.
- 对耐药性恶性瘤患者来说,研究新型免疫疗法至关重要.
研究的目的:
- 评估tebotelimab在患有晚期固体瘤或血液恶性瘤的患者中的临床安全性和活性.
- 确定推的2期剂量 (RP2D) 的tebotelimab作为单一治疗和与margetuximab结合.
- 评估tebotelimab单独或与margetuximab结合在特定患者群体中的抗瘤反应.
主要方法:
- 第1期剂量升级和队列扩展临床试验 (NCT03219268).
- 作为单疗法 (n=269) 或与马格图克西马布 (n=84) 结合使用的特博提利马布.
- 主要终点:安全性和最大耐受剂量;次要终点:抗瘤活性.
主要成果:
- 单独治疗tebotelimab:68%的与治疗相关的不良事件 (TRAEs),RP2D600毫克Q2W;可评估患者的瘤减少34%,包括PD-1耐火性和LAG-3+淋巴瘤.
- 铁利马布 + 马格图西马布:74%的TRAE,RP2D 600毫克Q3W;在HER2+瘤中19%的客观反应率,包括对先前疗法的不响应者.
- 在多个固体瘤和特定的血液性恶性瘤中表现出活性,即使在耐火环境中.
结论:
- 德博特利马布是一种临床安全的双特异性抗体,在晚期癌症中具有已证明的抗瘤活性.
- 结合了tebotelimab和margetuximab显示了HER2+瘤的潜力,包括那些对标准治疗有抗性的瘤.
- 需要在第二阶段试验中进行进一步的研究,以确认在不同患者群体中的疗效.
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