Abstract:
Objective: To demonstrate the type of CEBPA gene mutations among patients with acute myeloid leukemia (AML), clinical characteristics, and prognostic effect on patient outcomes. Methods: Demographic data, clinical features, laboratory characteristics, and data about treatment and follow-up of 57 patients with CEBPA mutated AML diagnosed at Peking Union Medical College Hospital between April 2016 and November 2022 were collected and analyzed. Results: In total, 57 patients with CEBPA mutation accounted for 16.1% of all the 353 patients with AML, among which 28 patients had CEBPA-bZIPinf and 29 had CEBPA-other. Compared with the CEBPA-other group, the CEBPA-bZIPinf group was younger (54 vs 64 years, P=0.010), de novo AML was more common (P=0.001), and the level of bone marrow blast was higher (68.0% vs 36.3%, P=0.001). Moreover, 24 patients from the CEBPA-bZIPinf group and 19 from the CEBPA-other group received chemotherapy. The one-course complete remission (CR) rate of the CEBPA-bZIPinf group was significantly higher than that of the CEBPA-other (87.5% vs 47.4%, P=0.010) and CEBPA-wt (87.5% vs 50.3%, P=0.002) groups. After a median follow-up of 11 months, the median OS of the CEBPA-bZIPinf group was significantly longer than that of the CEBPA-wt group (not reached vs 22.1 months, P=0.012) . Conclusion: CEBPA-bZIPinf mutated AML is a unique clinical entity, with a younger age of diagnosis, better response to chemotherapy, and better prognosis.
目的: 探讨携带CEBPA基因突变的急性髓系白血病(AML)患者的突变类型、临床特点和突变对生存结局的影响。 方法: 回顾性分析2016年4月至2022年11月期间北京协和医院确诊的57例伴有CEBPA基因突变的AML患者的人口学信息、临床表现、实验室检查结果、治疗以及生存数据。 结果: 57例CEBPA基因突变患者占同期所有353例AML患者的16.1%,其中bZIP区域框内突变(CEBPA-bZIPinf)28例,其余CEBPA基因突变(CEBPA-other)29例。与CEBPA-other患者相比,CEBPA-bZIPinf患者更年轻(54岁对64岁,P=0.010),原发性AML更常见(P=0.001),骨髓原始细胞比例更高(68.0%对36.3%,P=0.001)。CEBPA-bZIPinf及CEBPA-other患者分别有24例和19例接受化疗,CEBPA-bZIPinf患者的1个疗程完全缓解率显著高于CEBPA-other(87.5%对47.4%,P=0.010)及CEBPA野生型(87.5%对50.3%,P=0.002)患者。中位随访11个月,CEBPA-bZIPinf患者的中位总生存期明显长于CEBPA野生型患者(未达到对22.1个月,P=0.012)。 结论: CEBPA-bZIPinf突变的AML患者具有独特的临床特征,对化疗的反应更好,预后更佳。.