# The impact of donor human leukocyte antigen-Bw4 allele on natural killer cell reconstitution and transplant-related mortality in haploidentical transplantation

**Authors:** 明 赵, 郑丽 徐, 星星 余, 亦扬 丁, 英军 常, 晓辉 张, 晓军 黄, 翔宇 赵

PMC · DOI: 10.3760/cma.j.cn.121090-20240314-00094 · 2024-05-01

## TL;DR

This study shows that donor HLA-Bw4 expression improves NK cell recovery and reduces transplant-related mortality in haploidentical stem cell transplants.

## Contribution

The study identifies HLA-Bw4 as a novel factor influencing NK cell reconstitution and transplant outcomes in haploidentical transplantation.

## Key findings

- Donor HLA-Bw4 promotes faster NK cell recovery and functional restoration.
- HLA-Bw4 expression is associated with reduced transplant-related mortality, especially infection-related mortality.
- Post-transplant cyclophosphamide does not affect the benefits of HLA-Bw4 expression.

## Abstract

探讨在接受来自母体或旁系供者的非去T细胞单倍体造血干细胞移植时，供者HLA-Bw4表达对NK细胞重建和移植预后的影响。

本研究前瞻性入组了32例接受来自母体或旁系的供者非去T细胞单倍体移植患者（队列1），评估供者HLA-Bw4表达对NK细胞重建的影响；同时回顾性研究了278例接受来自母体或旁系的供者非去T细胞单倍体移植患者（队列2），分析供者HLA-Bw4对HSCT预后的影响。同时还分别比较了在接受移植后环磷酰胺（PT-Cy）和不接受PT-Cy的情况下，供者HLA-Bw4表达对HSCT预后影响的差异。

编码HLA-Bw4的供者促进了NK细胞的重建和功能恢复，PT-Cy体内应用并未影响供者HLA-Bw4促进NK细胞重建。编码HLA-Bw4的供者与移植相关死亡率（Transplantation-related mortality，TRM），尤其是感染相关的TRM（infection-related TRM）降低相关，PT-Cy体内应用并未影响供者HLA-Bw4降低TRM。

在进行来自母体或旁系供者的非体外去T细胞单倍体移植时，编码HLA-Bw4的供者有助于快速NK细胞重建和功能恢复，并且与较低的TRM（尤其是感染相关TRM）显著相关。这些结果表明，供者HLA-Bw4的表达对于单倍体移植患者的临床结果具有重要意义。因此，在供受者选择和移植策略中，考虑供者HLA-Bw4可能具有临床意义。

## Linked entities

- **Chemicals:** cyclophosphamide (PubChem CID 2907)

## Full-text entities

- **Diseases:** infection (MESH:D007239)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Figures

3 figures with captions in the complete paper: https://tomesphere.com/paper/PMC11270487/full.md

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Source: https://tomesphere.com/paper/PMC11270487