人类白细胞抗原不匹配和生存在当代血造细胞移植血液恶性瘤的生存
Esteban Arrieta-Bolaños1,2, Edouard F Bonneville3,4, Pietro Crivello1
1Institute for Experimental Cellular Therapy, University Hospital Essen, Essen, Germany.
概括
人类白细胞抗原 (HLA) 不匹配,特别是在I类抗原和结动机水平上,显著降低了血液细胞移植 (HCT) 中的存活率. 移植后循环胺 (PTCy) 不会改变HLA不匹配对患者结果的负面影响.
科学领域:
- 免疫遗传学 免疫遗传学
- 造血细胞移植 造血细胞移植
- 在瘤学瘤学.
背景情况:
- 人类白细胞抗原 (HLA) 不匹配是血液细胞移植 (HCT) 后生存率降低的已知危险因素.
- 最近的HCT进展,例如用于移植后环胺 (PTCy) 进行移植对宿主疾病 (GVHD) 预防,可能会改变HLA不匹配的影响.
研究的目的:
- 为了研究HLA不匹配和整体存活率 (OS) 之间的关联,在一个大群非相关的HCT接受者中.
- 评估最近的HCT实践,特别是PTCy如何影响与HLA不匹配相关的风险.
主要方法:
- 分析了2016年至2020年期间进行的17292个具有6位点高分辨率HLA类型的无关HCT,其中包括1523个用PTCy进行的移植.
- 多变量考克斯回归模型被用来评估HLA风险关联与OS作为主要终点.
- 基于HLA匹配基因,抗原和结动机 (PBM) 水平的结局结果的比较,以及在PTCy与非PTCy移植组之间.
主要成果:
- 与完全匹配的移植相比,HLA不匹配的整体存活率 (OS) 较低 (HR,1.23).
- 一类HLA不匹配 (HLA-A, -B, -C) 显著影响了OS (HR, 1.29),而二类不匹配 (HLA-DRB1, -DQB1) 没有.
- 第I类抗原水平不匹配 (HR, 1.36) 和PBM不匹配 (HR, 1.42) 与异基水平不匹配相比,与更糟糕的OS有关.
- 虽然PTCy在HLA匹配的移植中改善了无GVHD,无复发的存活率,但HLA不匹配在PTCy和非PTCy组中同样增加了死亡率 (相互作用P = .43).
结论:
- 一类HLA不匹配,特别是在抗原和PBM水平上,与当代无关HCT的生存率较低有关.
- 与传统预防相比,PTCy的使用并没有显著改变HLA不匹配对死亡率的影响.
- 优化HLA匹配仍然是现代HCT实践中的一个关键考虑因素.
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