儿童急性髓系白血病的新型分类系统及高危类别
Novel classification system and high-risk categories of pediatric acute myeloid leukemia.
作者信息
Umeda Masayuki, Liu Yen-Chun, Karol Seth E, Klco Jeffery M
机构信息
Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN.
Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN.
出版信息
Haematologica. 2025 Sep 1;110(9):1962-1973. doi: 10.3324/haematol.2024.285644. Epub 2025 Jan 9.
The prognosis of pediatric acute myeloid leukemia (AML) remains poor compared with pediatric acute lymphoblastic leukemia (ALL); accurate diagnosis and treatment strategies based on the genomic background are urgently needed. Recent advances in sequencing technologies have identified novel pediatric AML subtypes, including BCL11B structural variants and UBTF tandem duplications (UBTF-TD), associated with poor prognosis. In contrast, these novel subtypes do not fit into the diagnostic systems for AML of the 5th edition WHO classification or International Consensus Classifications (ICC) released in 2022. In this review, we describe the current state of pediatric AML classification in the context of a new classification framework based on the findings of updated genomic profiling. Molecular categories in the new classification system are associated with unique transcriptional, mutational, and clinical characteristics, which can be leveraged for predicting clinical outcomes and developing molecular-target therapies based on the initiating driver alterations. We also highlight four high-risk subtypes of pediatric AML, namely CBFA2T3::GLIS2, BCL11B, UBTF-TD, and ETS family fusions, focusing on their disease mechanisms, clinical associations, and possible therapeutic strategies to overcome the dismal clinical outcomes associated with these alterations.
与小儿急性淋巴细胞白血病(ALL)相比,小儿急性髓系白血病(AML)的预后仍然很差;迫切需要基于基因组背景的准确诊断和治疗策略。测序技术的最新进展已经确定了新的小儿AML亚型,包括与预后不良相关的BCL11B结构变异和UBTF串联重复(UBTF-TD)。相比之下,这些新亚型并不符合2022年发布的世界卫生组织第5版AML诊断系统或国际共识分类(ICC)。在本综述中,我们根据更新的基因组分析结果,在新的分类框架背景下描述小儿AML分类的现状。新分类系统中的分子类别与独特的转录、突变和临床特征相关,这些特征可用于预测临床结果,并基于起始驱动改变开发分子靶向治疗。我们还重点介绍了小儿AML的四种高危亚型,即CBFA2T3::GLIS2、BCL11B、UBTF-TD和ETS家族融合,重点关注它们的疾病机制、临床关联以及克服与这些改变相关的不良临床结果的可能治疗策略。