在T细胞繁殖的平分相同的捐赠者外周血液干细胞移植中进行捐赠者选择
Fumiya Wada1, Makoto Iwasaki1, Masahiro Hirayama2
1Department of Hematology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Leukemia
|February 19, 2025
概括
捐赠者的特征显著影响T细胞繁殖的顺序相同的干细胞移植的结果. 较低的CD34+细胞剂量与PTCy的生存率较差有关,而供体年龄和HLA不匹配影响了ATG的结果.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 移植科学 移植科学
背景情况:
- 周围血液干细胞移植 (PBSCT) 是一种至关重要的治疗方法.
- 需要澄清捐赠者特征对移植后循环胺 (PTCy) 或低剂量抗甲基球蛋白 (ATG) 的结果的影响.
研究的目的:
- 研究捐赠者特征对整体存活率 (OS),无复发存活率 (RFS) 和无GVHDRFS (GRFS) 的影响.
- 根据捐赠因子,比较PTCy-haplo和ATG-haplo协议之间的结果.
主要方法:
- 对1677名接受TCR和平分同样的PBSCT的患者进行了回顾性分析.
- 患者被分组为PTCy-haplo (n=1,107) 和ATG-haplo (n=570) 协议.
- 使用调整的危险比率 (aHR) 来评估捐赠者特征影响的统计分析.
主要成果:
- 较低的CD34+细胞剂量 (<4×10^6/kg) 与PTCy-haplo (aHR=1.49) 中更糟糕的OS有关.
- 增加的供体年龄和HLA 2-3不匹配与ATG-haplo中的更糟糕的OS相关 (aHR=1.12和1.46分别).
- 在这两种方案中,更高的供体年龄增加了III-IV级急性GVHD的风险. 后代捐赠者在ATG-haplo.中比兄弟捐赠者表现出更好的RFS和GRFS.
结论:
- 供体CD34+细胞剂量对于PTCy-haplo结果至关重要.
- 捐赠者的年龄和HLA匹配是ATG-haplo.成功的关键决定因素.
- 了解这些捐赠因子可以优化患者选择,并改善单 haploidentical PBSCT 的结果.
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