Abstract

目的探讨CD34、CD2、CD56表达和FLT3-ITD突变在成人急性早幼粒细胞白血病(APL)中的预后价值。方法分析2010年1月至2016年3月确诊的137例成人APL患者的免疫表型及分子学特点,探讨CD34、CD2、CD56表达及FLT3-ITD突变与初诊WBC、完全缓解率、早期死亡率、复发率、总生存(OS)率及无病生存(DFS)率的关系。结果①137例APL患者中,伴CD34表达者占26.3%,伴CD2表达者占25.5%,伴CD56表达者占10.2%,FLT3-ITD突变率为17.5%。CD34、CD2、CD56表达和FLT3-ITD突变在高危组患者中的发生率分别为43.2%、47.7%、18.2%和27.3%;在中/低危组患者中的发生率分别为18.3%、15.1%、6.5%和12.9%,差异均有统计学意义(χ2值分别为9.561、16.764、4.480、4.268,P值分别为0.002、<0.001、0.034、0.039)。②中位随访41个月,完全缓解率为96.9%,早期死亡率为6.6%,复发率为7.3%。与阴性者比较,伴CD34或CD2表达者的复发率增加(18.8%对3.3%,χ2=8.462,P=0.004;16.1%对4.3%,χ2=4.382,P=0.028);伴CD56表达或FLT3-ITD突变者早期死亡率增加(21.4%对4.9%,χ2=5.610,P=0.018;16.7%对4.4%,χ2=4.833,P=0.028)。③137例患者的OS率为88.3%,DFS率为84.7%;CD34、CD56表达或FLT3-ITD突变者的OS及DFS较阴性者差(P值均<0.05)。结论在成人APL患者中,CD34、CD2、CD56表达及FLT3-ITD突变是一种不良预后因素。

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