预制的抗HLA DQA1 / DQB1 DSA可能是导致平分相同干细胞移植中移植失败的原因
HeHua Wang1, Jing Cheng2, Fan Zhang2
1Department of Hematology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China.
Expert review of hematology
|June 18, 2025
概括
在全源造血干细胞移植 (HSCT) 后的初级移植失败 (PGF) 可以与捐赠者特定的抗HLA抗体 (DSA) 联系起来. 这一案例强调了高水平的抗HLA-DQ DSAs作为PGF的潜在原因,强调了需要在移植评估中考虑HLA-DQ的必要性.
科学领域:
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
- 移植 移植 移植 移植
背景情况:
- 主要移植失败 (PGF) 是全原造血细胞干细胞移植 (HSCT) 的关键并发症.
- 现有的研究主要集中在针对 HLA-A, -B 和 -DR 分子的捐赠体特异性抗HLA抗体 (DSA),作为 PGF 的原因.
研究的目的:
- 报告与预先形成的高水平抗HLA-DQ供体特异性抗体相关的PGF的第一个病例.
- 研究HSCT后PGF中HLA-DQ抗体的作用.
主要方法:
- 一名患有急性髓性白血病的患者接受了一种完全相同的HSCT,并经历了PGF.
- 这位患者对HLA-DQA1和HLA-DQB1.1.表现出持续高水平的DSA.
- 随后的移植尝试涉及不相关的带血和G-CSF原始骨髓和外周血液干细胞的组合.
主要成果:
- 患者尽管接受了无敏化治疗,但仍患有PGF.
- 一个不相关的带血单元实现了完全移植,而患者的儿子的干细胞未能再次移植.
- 短串重复 (STR) 试验证实了从带血单元的移植.
结论:
- 高水平的抗HLA-DQA1 / DQB1 DSAs可能与全基性HSCT中的PGF有关.
- 对PGF的临床评估应包括对HLA-DQ的DSA的评估,除了HLA-A, -B和-DR.
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