在LABScreen单抗原珠子测定中检测到假阳性泛HLA-A抗体的独特案例
Merschman Jarret1, Barnes Rachel1, Burmeister Lydia1
1Division of Transfusion Medicine, Mayo Clinic, 200 1st street SW, Rochester MN 55905, USA.
Human immunology
|February 11, 2026
概括
这项研究报告了第一个虚假阳性泛HLA-A抗体反应的病例,该病例在肝脏移植后通过特定单抗原珠子试验检测到. 识别这些文物对于准确的移植风险评估至关重要.
科学领域:
- 移植免疫学 移植免疫学
- 免疫遗传学 免疫遗传学
- 诊断试验的发展.
背景情况:
- 精确的人类白细胞抗原 (HLA) 抗体检测对于管理移植免疫风险至关重要.
- 固相测试 (SPA),包括单抗原珠 (SAB) 测试,提供高灵敏度,但可以产生假阳性结果.
- 以前,假阳性泛HLA-C/DR反应性被记录在案,但泛HLA-A反应性没有.
研究的目的:
- 报告第一个虚假阳性泛HLA-A反应性的记录案例.
- 为了调查移植后患者身上这种人工制品的原因.
- 强调在HLA抗体检测中识别测试特异性人工物的重要性.
主要方法:
- 一名经过肝联合移植的患者在基于Luminex的LABScreenTM SAB测定中发展了泛HLA-A反应性.
- 进行了重复测试,PresorbTM治疗,替代SAB平台 (LIFECODES® LSATM),LABScreenTM混合珠和替代流交叉匹配.
- 使用酸处理的珠子进行测试,以排除对变质HLA的抗体.
主要成果:
- 移植后一年的初始SAB测定始终检测到全HLA-A反应性.
- 其他测试方法和平台没有证实HLA-A抗体的存在.
- 替代流交叉匹配是负的,表明没有细胞反应性抗体.
结论:
- 这一案例是第一个针对单一商业SAB产品的虚假阳性泛HLA-A反应性报告.
- 这种依赖测试的文物可能导致对抗体特异性的误解.
- 意识和适当的确认测试对于防止错误分类和确保移植患者安全至关重要.
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