人类血小板抗原1a-alloimmunized怀孕的自然史:一个前性的观察队列研究
Thijs W de Vos1, Dian Winkelhorst2, Leendert Porcelijn3
1Willem-Alexander Children's Hospital, Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Netherlands; Department of Experimental Immunohematology, Sanquin Research, Amsterdam, Netherlands.
The Lancet. Haematology
|February 26, 2024
概括
胎儿和新生儿非免疫性血小板缺血 (FNAIT) 是罕见的,但可能发生严重出血. 这项研究在1.2%的HPA-1a免疫妊娠中发现了严重出血,这表明查可以预防重大并发症.
科学领域:
- 产科和妇科 产科和妇科
- 免疫学 免疫学 免疫学
- 新生儿科学 新生儿科学
背景情况:
- 胎儿和新生儿非免疫性血小板缺血 (FNAIT) 是一种罕见但严重的疾病,可能导致胎儿内出血或死亡.
- FNAIT的自然史和发病率仍然不清楚,这阻碍了常规查协议的开发.
- 这项研究旨在确定临床检测到的FNAIT在涉及人类血小板抗原-1a (HPA-1a) 免疫接种的怀孕中的发生率.
研究的目的:
- 评估在怀孕期间临床检测到的胎儿和新生儿非免疫性血小板缺血症 (FNAIT) 的发生率.
- 评估严重FNAIT的发生情况,定义为内或器官出血,或与出血相关的死亡.
- 告知实施HPA-1a免疫查计划的潜在好处.
主要方法:
- 进行了一项前性观察队列研究,涉及RhD和Rhc阴性孕妇.
- 妇女进行了HPA-1a抗原状态的查,如果阴性,则测试HPA附抗体.
- 主要结局是围产期内严重,临床可检测的FNAIT的发生率.
主要成果:
- 在153,106名女性中,有2.4%的HPA-1a阴性. 在研究的81名HPA-1a免疫胎儿中,有一名 (1.2%) 患有严重的HPA-1a介导的内出血,三名 (3.7%) 患有轻度的FNAIT.
- 在85名HPA-1a阴性参与者中检测到抗HPA-1a抗体.
- HLA-DRB3*01:01阳性在90.1%的HPA-1a免疫女性中观察到.
结论:
- 在FNAIT中,主要临床可检测出血的发生率估计为每10,000例HPA-1a阴性怀孕中11例.
- 在FNAIT中严重出血事件似乎很罕见.
- 这些发现支持了一个查计划的潜力,以防止FNAIT中的严重出血并发症.
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