提供者调节性T细胞疗法以预防移植对宿主疾病
Everett H Meyer1,2, Anna Pavlova1,3, Alejandro Villar-Prados1,2
1Stanford Blood and Marrow Transplantation and Cellular Therapy Division, Stanford School of Medicine, Stanford University, Stanford, CA.
Blood
|January 10, 2025
概括
捐赠者的调节性T细胞 (Tregs) 在异性造血细胞移植患者中显著改善了无GVHD,无复发生存期 (GRFS). 与标准护理相比,这种精确的Treg疗法减少了GVHD发病率,改善了治疗反应.
科学领域:
- 免疫学 免疫学 免疫学
- 移植医学 移植医学
- 细胞疗法细胞疗法
背景情况:
- 全基性造血细胞移植具有治愈潜力,但受到移植与宿主疾病 (GVHD) 的阻碍.
- 捐赠者调节性T细胞 (Tregs) 在临床前和早期临床研究中显示出预防GVHD和促进免疫健康的前景.
研究的目的:
- 为了调查精确选择的,高度净化的供体Treg疗法是否改善了经过骨髓缩条件后的1年无GVHD,无复发生存期 (GRFS).
- 为了比较这种Treg疗法的疗效与标准护理 (SOC) 队列.
主要方法:
- 一个开放的,单中心的第二阶段疗效研究招募了44名患者.
- 捐赠者Treg产品是由调动的外周血液制造的,并在72小时内新鲜 (没有冷保存) 施用.
- 结果与同期的SOC队列进行了比较.
主要成果:
- 实现了显著改善1年GRFS的主要终点 (64%在Treg手臂相比36%在SOC手臂,P=.002).
- 急性3-4级GVHD的1年发病率为7%,中度至重度慢性GVHD为11%,非复发性死亡率为4.5%.
- 与SOC组 (50%) 相比,接受Treg治疗的患者在2至4级急性GVHD中对前线皮质类固醇的反应率 (91%) 较高.
结论:
- 精确选择和净化供体Treg疗法在异性造血细胞移植后显著增强1年的GRFS.
- 这种Treg疗法减少了GVHD的发病率和负担,与标准方法相比,改善了患者的治疗结果.
- 新鲜Treg产品的成功使用突显了这种细胞治疗策略的可行性.
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