在已故捐赠者的脏分配中,平衡股权和人类白细胞抗原匹配与囊不匹配
Michal A Mankowski1, Loren Gragert2, Brendan Keating1
1Transplant Institute, NYU Langone Health, New York, New York, USA; Department of Surgery, NYU Grossman School of Medicine, NYU Langone Health, New York, New York, USA.
概括
使用片的分子匹配显示了与传统的抗原匹配相比,在移植中减少种族差异的潜力. 然而,差异仍然存在,并且根据用于匹配的特定分子而异.
科学领域:
- 免疫遗传学 免疫遗传学
- 移植免疫学 移植免疫学
- 卫生公平性健康公平性
背景情况:
- 人类白细胞抗原 (HLA) 匹配对移植成功至关重要.
- 目前美国脏分配中的HLA抗原匹配策略与种族差异有关.
- 基于片的分子匹配为HLA匹配提供了一种潜在的更精细的方法.
研究的目的:
- 为了评估脏捐赠者-接受者匹配的种族差异的程度,使用表皮不匹配.
- 为了与传统的HLA抗原匹配与皮皮匹配的种族差异进行比较.
主要方法:
- 从国家脏注册表中的5193个人中利用了高分辨率的HLA基因型.
- 模拟的捐赠者-接受者配对使用基于美国已故捐赠者人口统计数据的重复随机抽样.
- 针对不同族裔的候选人,对抗原和皮质皮相匹配的良好匹配捐赠者的定量百分比 (0-不匹配).
主要成果:
- 0-DR/DQ表不匹配显示的种族差异明显小于0-ABDR抗原不匹配 (黑人/亚洲人比黑人/亚洲人少3倍,拉丁人比拉丁人少2倍).
- 0-DR eplet不匹配增加了亚洲 (1.33倍) 和拉丁裔 (1.28倍) 候选人的差异.
- 0-DQ 字不匹配减少了黑人 (1.26 倍少) 和拉丁裔 (1.14 倍少) 候选人的差异,但增加了亚洲候选人的差异 (1.26 倍高).
结论:
- 基于表皮质的匹配可以减少,但不能消除,与抗原匹配相比,脏分配的种族差异.
- 选择特定的HLA分子来定义低风险匹配对种族差异产生重大影响.
- 需要进一步的研究,以优化片匹配策略,以实现公平的脏分配.
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