一个现代的心脏移植拒绝监测协议,利用无细胞DNA:一个单中心的经验
Ayman Saeyeldin1,2, Staci McKean1, Johanna Van Zyl3
1Department of Advanced Heart Failure and Transplant Cardiology, Baylor University Medical Center, Dallas, Texas.
JHLT open
|March 27, 2025
概括
心脏移植后的捐赠者衍生的无细胞DNA (dd-cfDNA) 监测是安全的,可以减少活检和治疗拒绝发作,而不会影响存活率. 这种非侵入性方法可以改善排斥监测和诊断准确度.
科学领域:
- 心脏病学 心脏病学
- 移植免疫学 移植免疫学
- 生物标志物研究的研究.
背景情况:
- 内心肌瘤活检 (EMBx) 是心脏移植排斥监测的标准,但具有侵入性和局限性.
- 来自捐赠者的无细胞DNA (dd-cfDNA) 是用于非侵入性排斥监测的有希望的血液生物标志物.
- 新兴的生物标志物旨在减少侵入性EMBx手术的频率.
研究的目的:
- 评估心脏移植拒绝监测协议的安全性和有效性,使用dd-cfDNA与减少的EMBx.
- 为了比较dd-cfDNA引导和EMBx-only监测之间的排斥率,移植功能障碍和存活率.
主要方法:
- 对237名心脏移植接受者的回顾性审查.
- 用dd-cfDNA监测的125名患者和较少的EMBx与仅使用EMBx监测的112名患者的比较.
- 对急性细胞排斥 (ACR),抗体中介排斥 (AMR),移植功能障碍和1年生存率的分析.
主要成果:
- dd-cfDNA组显著减少了EMBx定义的ACR和治疗的ACR发作 (2.5%与18.8%,p < 0.001).
- dd-cfDNA组有更多的EMBx定义的AMR (5%对0.9%) 和治疗的AMR (5%对2.7%).
- 两组之间在移植功能障碍,捐赠者特异性抗体或1年生存率方面没有发现显著差异.
结论:
- 使用dd-cfDNA的非侵入性监测协议是安全的,并且可以显著减少EMBx和治疗拒绝事件.
- dd-cfDNA方法没有影响心脏移植后的一年生存率.
- 用dd-cfDNA增加AMR检测可能会改善心脏移植接受者的诊断和治疗决策.
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