Abstract

目的在HLA-A、-B、-C、-DRB1、-DQB1高分辨基因分型的基础上,分析供受者单倍型和等位基因错配在单倍体联合第三方脐血移植对预后的影响。方法回顾性分析2012年1月至2014年12月期间行单倍体联合第三方脐血移植的230例恶性血液病患者,采用基因测序和寡核苷酸探针杂交方法进行供受者HLA-A、-B、-C、-DRB1、-DQB1高分辨基因分型。结果供受者根据HLA-A、-B、-C、-DRB1、-DQB1基因分型结果及相合度,分为HLA-5/10、-6/10、-7/10、≥8/10四组,其3年总生存(OS)率分别为48.7%、59.3%、71.1%、38.3%(P=0.068)。供受者HLA-6/10相合组与HLA-5/10相合组相比,3年OS率差异有统计学意义(P=0.041)。在供受者HLA-6/10相合组:当HLA-Ⅰ类位点(HLA-A、-B、-C)相合3年OS率为61.5%,与HLA-5/10相合组相比差异有统计学意义(P=0.017),且HLA-A位点等位基因相合3年OS及无事件生存(EFS)率分别为90.5%和84.4%,明显高于HLA-5/10相合组(P= 0.013,P=0.013)。供受者与脐血单倍型相合88例,不合51例,两者巨核系重建累积发生率分别为95.3%和86.2%(P=0.007),粒系重建累积发生率分别为98.8%和96.1%(P=0.022)。结论在单倍体联合第三方脐血移植的供者选择中,HLA相合度及等位基因错配对预后均有意义,选择与供受者单倍型相合的第三方脐血可促进移植后造血重建。

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