哈普洛同一与HLA匹配的兄弟捐赠者HCT与PTCy预防:HLA因子和捐赠者的年龄考虑因素
Rohtesh S Mehta1,2, Jeremy Ramdial3, Partow Kebriaei3
1Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, WA.
Blood advances
|August 21, 2024
概括
哈普洛特异性造血细胞移植 (HCT) 的结果与匹配的兄弟捐赠者 HCT 结果相似,特别是在老年患者中. 一个具有特定HLA匹配的年轻的平分异性捐赠者可能比更老的匹配的兄弟捐赠者更可取,以改善存活率.
科学领域:
- 造血干细胞移植 造血干细胞移植
- 免疫遗传学 免疫遗传学
- 移植结果的结果
背景情况:
- 匹配的兄弟捐赠者 (MSD) 是血造细胞移植 (HCT) 的首选者.
- 替代性捐赠者的使用,特别是 haploidentical 捐赠者的使用,正在增加.
- 了解像B-领导者和DRB1匹配等HLA因子的影响对于替代性供体HCT结果至关重要.
研究的目的:
- 为了比较哈普罗同一性HCT与MSD HCT的结果.
- 评估HLA因子 (B-领导者,DRB1) 和供体年龄对HCT结果的影响.
- 在老年接受者中,评估较年轻的平分异性捐赠者的适用性与较老的MSD相比.
主要方法:
- 使用移植后循环胺 (PTCy) 复原性HCT (n=1052) 和MSD HCT (n=400) 的回顾性比较.
- 多变量分析评估整体存活率 (OS),非复发死亡率和复发率.
- 在年龄较大的接受者 (≥50岁) 中,直接比较年轻的平分异性捐赠者 (<35岁) 与较老的MSD (≥50岁).
主要成果:
- 与MSD HCT相比, Haploidentical HCT表现出类似的生存状况,非复发死亡率和复发率.
- 较年轻的捐赠者年龄 (<35岁) 是改善生存状况的重要预测因素.
- 在老年接受者中,年轻的平分异性捐赠者与B-领袖匹配显示出优异的OS与老年MSD相比.
- 较年轻的具有DRB1不匹配的哈普罗特异性捐赠者比较年长的MSD有较低的复发风险.
结论:
- 与PTCy预防的哈普罗同一性HCT提供了与MSD HCT相似的结果.
- 对于老年患者来说,年轻的平分异性捐赠者,特别是具有B-领袖匹配的捐赠者,可能是比较老的MSD更好的选择.
- 在更大的数据集中进行进一步的验证是有必要的,以确认这些发现.
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