在接受类固醇节约性免疫抑制协议的种族多样性移植接受者中应用HLA分子水平不匹配
Eva Santos1, Katrina Spensley2, Nicola Gunby1
1Histocompatibility and Immunogenetics Laboratory, Northwest London Pathology NHS Trust, Hammersmith Hospital, London, UK.
概括
与抗原不匹配相比,分子不匹配是移植中新型捐赠者特异抗体 (dnDSA) 的优异预测因素. 分子不匹配负载,而不是抗原不匹配,在不同人群中独立与dNDSA风险相关.
科学领域:
- 免疫学 免疫学 免疫学
- 移植 移植 移植 移植
- 遗传学 遗传学 是一个
背景情况:
- 在移植中,HLA不匹配至关重要.
- 分子不匹配 (MolMM) 提供了比抗原水平匹配更精确的评估.
- 在特定免疫抑制下不同人群中MolMM的数据有限.
研究的目的:
- 调查分子不匹配和新型捐赠者特异性抗体 (dnDSA) 之间的关联.
- 为了比较MolMM的预测能力与dnDSA的抗原不匹配.
- 分析这些关联在一个种族多样化的脏移植队列在类固醇节约性免疫抑制.
主要方法:
- 我们使用HLA-Matchmaker,HLA-EMMA和PIRCHE-II进行MolMM评估.
- 分析了从419个移植接受者接受类固醇节约性免疫抑制的数据.
- 采用多变量分析来确定 dnDSA 的独立预测因子.
主要成果:
- 51名 (12.2%) 患者出现了 dnDSA.
- 增加的 MolMM 负载与 dnDSA 强烈相关,而抗原不匹配则没有.
- 在识别 dnDSA 的低风险受体时,MolMM 显示的特异性高于抗原不匹配.
结论:
- 分子不匹配比传统的抗原不匹配更准确地预测dndsa.
- 极简主义的免疫抑制方案需要仔细考虑免疫性和MolMM.
- 需要进一步的研究来完善跨不同族群的MolMM识别.
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