第二个报告的血液溶解输血反应病例是由抗-Sc2引起的:临床诊断
Hang Mieu Ha1, Wesley Rubenstein1, Maryam Asif2
1Department of Pathology and Laboratory Medicine, University of California, Davis, Sacramento, CA.
Immunohematology
|January 9, 2026
概括
一名患者因抗-Sc2抗体而经历了血液溶解输血反应 (HTR),尽管具有兼容的交叉匹配. 这凸显了对罕见血型抗原 (如Scianna血型系统 (Sc2)) 的先进测试的需要,以确保输血安全.
科学领域:
- 输血医学 输血医学
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
背景情况:
- 西安纳血型系统包括低流行性抗原SC2.
- 从历史上看,SC2与血液溶解性疾病和罕见的输血反应有关.
- 抗SC2抗体可以引起显著的临床事件.
研究的目的:
- 报告第二例抗SC2介导的血液溶解输血反应 (HTR).
- 强调抗SC2合免疫的临床意义.
- 讨论对罕见抗原进行标准输血兼容性测试的局限性.
主要方法:
- 一个患有β-thalassemia major和已知的抗SC2.2的患者的病例报告.
- 输血与交叉匹配兼容的红细胞 (RBC) 单位.
- 输血后的评估包括实验室检测和参考实验室对抗SC2的确认.
主要成果:
- 患者出现了HTR的症状,包括黄和血红蛋白下降.
- 标准抗体查和抗人类球蛋白 (AHG) 交叉匹配是负的.
- 参考测试证实了患者血中的抗SC2,而捐赠红细胞单位是SC2+.
结论:
- 这一案例强调了抗SC2抗体的临床相关性.
- 传统的抗体查和AHG交叉匹配可能无法检测低流行性抗原的抗体.
- 个性化输血策略,包括针对性输血前检测和采购抗原阴性单元,对于具有罕见 alloantibodies 的患者至关重要.
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