患有DSA阴性严重微血管炎症的急性排斥在移植接受者中,与单独的DPB1*04-不匹配成功稳定了Daratumumab
Laura Knödl1, Maike Büttner-Herold2, Markus Götz3
1Department of Nephrology, University Hospital Regensburg, Regensburg, Germany.
HLA
|January 10, 2026
概括
移植后的微血管炎症 (MVI) 即使没有捐赠者特异性抗体 (DSA),也可能导致移植失败. 一个案例研究表明,抗CD38疗法成功治疗了MVI,这表明NK细胞参与.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 免疫学 免疫学 免疫学
- 移植 移植 移植 移植
背景情况:
- 没有捐赠者特异性抗体 (DSA) 的移植中的微血管炎症 (MVI) 是对过早移植失败的日益关注的问题.
- 自然杀手 (NK) 细胞的全活性,可能是通过识别HLA不匹配 (缺失自我) 的杀手免疫球蛋白类受体,是一个可疑的机制.
研究的目的:
- 报告一个患有HLA-DPB1*04不匹配,但没有可检测的DSA.的患者患有严重MVI的早期代移植排斥病例.
- 探索除了B细胞反应之外的异性活性的替代机制,并评估抗CD38疗法的疗效.
主要方法:
- 一个接受脏移植的病例报告.
- 在HLA类型和DSA查.
- 脏活检以评估MVI.
- 用达拉图穆马布 (抗CD38 mAb) 进行治疗.
主要成果:
- 患者出现了严重的MVI,尽管HLA匹配,除了单个HLA-DPB1*04不匹配和没有可检测的DSA.
- 一个为期9个月的达拉图马布疗程成功逆转了MVI并稳定了患者的临床状况.
- 没有观察到可检测的B细胞全活性.
结论:
- 这一案例突出了NK细胞介导的全活性,作为移植中MVI的潜在原因,独立于可检测的DSA.
- 抗CD38疗法在管理这种MVI病例方面表现出潜在的有效性.
- 这些发现表明需要考虑在移植排斥中非HLA抗体介导的机制.
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