Blood:不能进行NT-proBNP检查的情况下,也可对AL淀粉样变患者分期了

2018-10-22 MedSci MedSci原创

中心点:采用为阈值BNP>81pg/mL和TnI>0.1ng/mL的AL淀粉样变生物标志物分期系统与以NT-proBNP为基础的系统密切相关。新的以BNP为基础的分期系统可预测AL淀粉样变患者的总体存活率。摘要:免疫球蛋白轻链淀粉样变(AL淀粉样变)是由于轻链错误折叠导致的,形成可溶性的毒性聚合物,在组织器官中沉积导致器官功能障碍。存活的主要决定因素是心脏受累。目前的分期系统采用N末端

中心点:

采用为阈值BNP>81pg/mL和TnI>0.1ng/mL的AL淀粉样变生物标志物分期系统与以NT-proBNP为基础的系统密切相关。

新的以BNP为基础的分期系统可预测AL淀粉样变患者的总体存活率。

摘要:

免疫球蛋白轻链淀粉样变(AL淀粉样变)是由于轻链错误折叠导致的,形成可溶性的毒性聚合物,在组织器官中沉积导致器官功能障碍。存活的主要决定因素是心脏受累。目前的分期系统采用N末端促脑钠肽(NT-proBNP)和心肌酶(TnT/TnI)进行预测,但很多中心不提供NT-proBNP检测。

Brian Lilleness等人意欲建立一种采用脑钠肽(BNP)的新的分期系统,可将Mayo2004分期系统和预测AL淀粉样变患者的存活率结合起来。研究人员设计了两个队列,一个包含249位同时检测了BNP、NT-proBNP和TnI的患者的衍生队列,用来创建分期系统;一个补充队列,包含592位患者,随访10年,明确存活率。

在衍生队列中,研究人员发现BNP阈值>81np/mL时,与Mayo2004分期相关性最强,也最能鉴别心脏受累。根据BNP>91pg/mL和InI>0.1ng/mL,划分出三期,与Mayo2004相比具有高度的一致性(k=0.854)。

在补充队列中,25%的患者为I期,44%的患者为II期,15%的患者为III期,16%的患者为IIIBA期;而中位存活期,I期患者未达到,II期患者9.4年,III期患者4.3年,IIIb期患者1年。

该新的波士顿大学(BU)生物标志物评分系统可协助医疗中心在不能进行NT-proBNP检查的情况下,将AL淀粉样变患者划分至合适的分期。


原始出处:

Brian Lilleness,et al. Development and validation of a survival staging system incorporating BNP in patients with light chain (AL) amyloidosis. Blood  2018  :blood-2018-06-858951;  doi: https://doi.org/10.1182/blood-2018-06-858951

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    2018-10-24 huiwelcome
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    2018-10-24 mjldent
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    2018-10-24 sunylz

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