在接受HLA匹配非相关捐赠者HCT的患者中,高剂量帕利费林用于GVHD预防的1/2期研究
Eduard Schulz1, Lauren M Curtis2, Noa G Holtzman3
1Immune Deficiency Cellular Therapy Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States.
Blood
|May 7, 2025
概括
高剂量帕利弗明 (KGF) 是安全的,并且可以在减少强度的条件化造血细胞移植 (HCT) 后预防急性移植对宿主疾病 (GVHD). 然而,在这个1/2阶段的试验中,它没有影响严重慢性GVHD的发病率.
科学领域:
- 造血细胞移植 造血细胞移植
- 免疫学 免疫学 免疫学
- 移植对宿主疾病 移植对宿主疾病
背景情况:
- 移植与宿主疾病 (GVHD) 是异性造血细胞移植 (HCT) 后的一个重大并发症.
- 在临床前研究中,质细胞生长因子 (KGF) 的帕利费尔明在保护上皮组织和预防GVHD方面表现有前途.
- 以往使用较低剂量帕利弗林的人类试验对预防GVHD无效.
研究的目的:
- 评估高剂量帕利弗明在接受T细胞充满外周血液HCT的患者中预防严重慢性GVHD的安全性和有效性,并进行降低强度调节 (RIC).
- 在这种情况下,要确定帕利弗明的推第二阶段剂量 (RP2D).
主要方法:
- 进行了一项使用3+3剂量升级设计的1/2期临床试验.
- 患者接受了fludarabine/cyclophosphamide RIC与标准的GVHD预防 (塔克罗利斯,甲甲,西罗利斯).
- 在HCT之前,帕利费尔明的剂量在180-720μg/kg之间;在移植后进行了淋巴细胞表型化.
主要成果:
- 高剂量的帕利弗林被很好地容忍,可控的不良事件包括皮疹和胰腺酶升高.
- 确定的RP2D是720μg/kg.
- 值得注意的是,没有接受RP2D的患者患有II-IV级急性GVHD (0/19),尽管严重的慢性GVHD发病率与历史对照没有显著差异.
结论:
- 高剂量帕利弗林在与RIC和标准GVHD预防联合使用时是安全的.
- 帕利弗林可能在预防HCT后的急性GVHD中发挥作用.
- 需要进一步的研究来了解帕利弗林对慢性GVHD的影响及其对T细胞群的免疫调节作用.
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