Abstract

目的观察转录因子T-bet (T-box expressed in T cells)在外周T细胞淋巴瘤(PTCL)患者中的表达并分析其与预后的相关性。方法收集2007年至2013年间由北京协和医院病理科诊断的109例初治PTCL患者的石蜡包埋病理标本及临床资料。对患者标本进行免疫组化染色,观察转录因子T-bet的表达并分析其与患者临床特征及预后的关系。结果109例初治PTCL患者中PTCL非特指型(PTCL-NOS)60例,NK-T细胞淋巴瘤(NKT) 18例,血管免疫母细胞性T细胞淋巴瘤11例,ALK阳性及阴性间变大细胞淋巴瘤各4例,其他12例。109例患者中T-bet总体阳性率为42.2%,在PTCL-NOS组患者中为43.3%,在NKT组患者中为44.4%。Kaplan-Meier生存曲线法结果显示,T-bet表达水平与PTCL患者总生存期无相关性(P=0.586)。病理亚型分层研究发现,T-bet表达水平与PTCL-NOS组患者总生存期无相关性(P=0.309),与NKT组患者总生存期呈正相关(P=0.004)。多因素分析提示ECOG评分≥2分为影响PTCL患者预后的独立危险因素(HR=5.907,95%CI 2.399~14.549,P<0.001)。结论转录因子T-bet在几类PTCL病理亚型患者中均有阳性表达,其表达水平与NKT患者总生存期呈正相关。

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