Discrepant subtyping of blood type A2 living kidney donors: Missed opportunities in kidney transplantation.

Discrepant subtyping of blood type A2 living kidney donors: Missed opportunities in kidney transplantation.
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DOI:
10.1111/ctr.14422
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发表时间:
2021-10
影响因子:
2.1
通讯作者:
--
中科院分区:
医学3区
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--
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尽管2014年建立了新的肾脏分配系统,但A2/A2B至B移植并未如预期增加。目前的器官获取和移植网络政策要求在两个不同的场合进行子类型划分,并且在结果不一致的情况下,默认为 A1 子类型。然而,用于血型亚型分型的血清学检测存在显着的固有变异性,并且很少进行基因分型。国家肾脏登记处是一个肾脏配对捐赠 (KPD) 计划,对所有 A/AB 捐赠者进行血清学分型,对于非 A1/非 A1B 捐赠者,进行确认性基因分型。 2018 年 2 月 18 日至 2020 年 9 月 15 日期间,在 NKR 登记的 1,111 名 A 型捐献者中,有 13.0% (145) 通过基因分型最终被分类为 A2 亚型。值得注意的是,其中 49.6%(72 人)在其捐赠中心被分类为 A1,根据 OPTN 政策,不符合分配为 A2 的资格。不准确的 A2 亚型代表着移植机会的重大损失,特别是在 KPD 中,A2 供体不仅可以促进 O 型和高度敏感候选者的活体供体移植,而且还可以促进其他活体供体移植。这项研究强调需要提高分型技术的准确性,以及需要改变政策以鼓励 A2 供体肾脏的最佳利用。
Despite the institution of a new Kidney Allocation System in 2014, A2/A2B to B transplantation has not increased as expected. The current Organ Procurement and Transplantation Network policy requires subtyping on two separate occasions, and in the setting of discrepant results, defaulting to the A1 subtype. However, there is significant inherent variability in the serologic assays used for blood group subtyping and genotyping is rarely done. The National Kidney Registry, a kidney paired donation (KPD) program, performs serological typing on all A/AB donors, and in cases of non-A1/non-A1B donors, confirmatory genotyping is performed. Between 2/18/2018 and 9/15/2020, 13.0% (145) of 1,111 type A donors registered with the NKR were ultimately subtyped as A2 via genotyping. Notably, 49.6% (72) of these were subtyped as A1 at their donor center, and in accordance with OPTN policy, ineligible for allocation as A2. Inaccurate A2 subtyping represents a significant lost opportunity in transplantation, especially in KPD where A2 donors can not only facilitate living donor transplantation for O and highly sensitized candidates, but can also facilitate additional living donor transplants. This study highlights the need for improved accuracy of subtyping technique, and the need for policy changes encouraging optimal utilization of A2 donor kidneys.
DOI: 10.1111/ajt.14719
发表时间: 2018-08
期刊: American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons
影响因子: --
作者:
Martins PN;Mustian MN;MacLennan PA;Ortiz JA;Akoad M;Caicedo JC;Echeverri GJ;Gray SH;Lopez-Soler RI;Gunasekaran G;Kelly B;Mobley CM;Black SM;Esquivel C;Locke JE
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发表时间: 2006-09-27
期刊: TRANSPLANTATION
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DOI: 10.1097/00007890-199812270-00025
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期刊: TRANSPLANTATION
影响因子: 6.2
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DOI: 10.1034/j.1600-6143.2002.020115.x
发表时间: 2002-01-01
影响因子: 8.8
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