bZIP域变异基因频率有助于精细化CEBPA突变AML中的风险分层
Kainan Zhang1, Xiaohang Ma1, Xiaoxuan Lu1
1National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Peking University Institute of Hematology, Peking University People's Hospital, Beijing 100044, China.
Biomedicines
|January 28, 2026
概括
在CCAAT/增强剂结合蛋白α (CEBPA) 突变中的变异性等位基因频率 (VAF) 预测急性髓性白血病 (AML) 的复发. 对于识别高风险患者而言,bZIP域VAF是一个比最大VAF更有效的预后标记.
科学领域:
- 血液学 血液学 血液学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 在急性髓性白血病 (AML) 中,CCAAT/增强剂结合蛋白α (CEBPA) 突变很常见.
- 对CEBPA变异异基因频率 (VAF) 的预后意义需要进一步调查.
研究的目的:
- 评估CEBPA分子特征的预后价值,特别是VAF,在新的AML患者中.
- 要确定bZIP域VAF是否比最大VAF更好地预测复发.
主要方法:
- 下一代测序 (NGS) 用于分析162名新诊断的AML患者的CEBPA突变.
- 确定了最佳的VAF值,并使用无事件生存率 (EFS) 和多变量分析评估预后值.
主要成果:
- 对于最大和bZIP域VAF的最佳值为44.2%被确定.
- 高的VAF与增加的白血病负担和较低的EFS相关.
- bZIP域VAF (HR: 3.174) 与最大VAF (HR: 2.460) 相比显示出更高的预后价值,并在子组中得到验证.
结论:
- CEBPA bZIP-domain VAF是AML复发的更有力的预测因素,而不是最大的VAF.
- 这一发现为早期识别高风险AML患者提供了有价值的工具.
- 高bZIP域VAF和DNMT3A突变是AML的独立风险因素.
更多相关视频
相关概念视频
Linear Approximation in Frequency Domain
370
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
370
Mutation, Gene Flow, and Genetic Drift
64.0K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
64.0K
Frequency-Domain Interpretation of PD Control
364
Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
The proportional control gain, combined with the...
The proportional control gain, combined with the...
364
Multiple Allele Traits
38.1K
The Concept of Multiple Allelism
38.1K
Time and frequency -Domain Interpretation of PI Control
410
Proportional-Integral (PI) controllers are essential in many control systems to improve stability and performance. They are commonly used in everyday devices like thermostats to enhance system damping and reduce steady-state error. When the zero in the controller's transfer function is optimally placed, the system benefits significantly in terms of stability and accuracy.
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
410
Histone Variants at the Centromere
5.0K
Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
5.0K


