特定于年龄的突变特征及其在儿科KMT2A重组的急性髓性白血病中的预后影响
Kota Shoji1, Kenichi Yoshida2, Shinju Iyoda1
1Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto.
Haematologica
|October 23, 2025
概括
患有KMT2A重组的急性髓性白血病 (AML) 的婴儿比较年长的儿童有更好的生存率. 然而,KMT2A::MLLT4和KRAS突变表明小儿AML患者的预后不佳.
科学领域:
- 血液学 血液学 血液学
- 儿科瘤学 儿科瘤学
- 分子生物学分子生物学
背景情况:
- 在急性髓性白血病 (AML) 中,KMT2A重组是常见的.
- 在KMT2A-重新安排的AML (KMT2A-rAML) 频率和预后的年龄特异性差异尚未得到充分理解.
- 了解这些差异对于改进治疗策略至关重要.
研究的目的:
- 调查儿科KMT2A-rAML.的特定年龄的突变特征和结果.
- 确定与不同年龄组无事件生存 (EFS) 和整体生存 (OS) 相关的预后因素.
- 在婴儿和儿童中比较KMT2A-rAML和非KMT2A-rAML之间的结果.
主要方法:
- 对239例儿科KMT2A-rAML病例和538例非KMT2A-rAML病例进行了回顾性分析.
- 分析突变特征,包括KMT2A::MLLT4,KRAS和其他信号和非信号通路基因.
- 多变量分析以确定EFS和OS的独立预后因素.
主要成果:
- 患有KMT2A-rAML的婴儿 (<1岁) 的EFS和OS明显优于儿童 (≥1岁).
- 相反,患有非KMT2A-rAML的婴儿的EFS和OS比儿童更糟糕.
- KMT2A::MLLT4与儿童的预后不佳有关;KRAS突变预测了这两个年龄组的预后不佳.
- 高龄,高白细胞计数,KMT2A::MLLT4和KRAS突变是独立的不良预后因素.
结论:
- 在KMT2A-rAML中,不同的年龄特异性突变特征表明了不同的潜在疾病机制.
- 在KMT2A-rAML的婴儿和儿童之间,突变特征和预后因素有很大差异.
- 这些发现支持根据年龄和分子标志物对儿科KMT2A-rAML进行精细的风险分层和量身定制的治疗策略.
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