Abstract
目的评估基因突变对芦可替尼治疗骨髓纤维化(MF)疗效的影响。方法回顾性分析2017年7月至2020年12月服用芦可替尼治疗并应用二代测序技术检测127个血液肿瘤相关基因突变的56例MF患者的临床资料,分析突变基因与芦可替尼疗效的关系。结果①56例患者中,原发性骨髓纤维化(PMF)36例、真性红细胞增多症(PV)后骨髓纤维化(PPV-MF)9例,原发性血小板增多症(ET)后骨髓纤维化(PET-MF)11例。②50例(89.29%)携带驱动基因突变,22例(39.29%)携带基因突变≥3个,29例(51.79%)检出高危基因突变(HMR)。③对于基因突变≥3个的MF患者,芦可替尼仍有较好的改善体质性症状及缩小脾脏的效果(P=0.001,P<0.001)。与基因突变<3个组比较,基因突变≥3个组停药前持续用药时间(TTF)及无进展生存期(PFS)明显缩短[356(55~1061)d对471.5(50~1270)d,z=−2.701,P=0.007;444(91~4109)d对1248.5(91~7061)d,z=−2.030,P=0.042]。④与未检出HMR的患者比较,≥2个HMR患者的芦可替尼缩脾效果较差(t=10.471,P=0.034),TTF及PFS明显缩短(P<0.001,P=0.001)。⑤在携带ASXL1、EZH2、SRSF2等附加基因突变患者中,芦可替尼缩脾、症状改善及稳定骨髓纤维化作用较差,携带ASXL1、EZH2突变患者TTF[ASXL1:360(55~1270)d对440(55~1268)d,z=−3.115,P=0.002;EZH2:327(55~975)d对404(50~1270)d,z=−3.219,P=0.001]及PFS较未携带者明显缩短(ASXL1:457(50~1331)d对574(55~1437)d,z=−3.219,P=0.001;EZH2:428(55~1331)d对505(55~1437)d,z=−2.576,P=0.008]。结论MF患者携带的基因突变类型、数量以及HMR对芦可替尼疗效有一定影响。
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