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神经母细胞瘤患者的结果和染色体不稳定性

Marzia Ognibene¹, Patrizia De Marco¹, Loredana Amoroso²

¹U.O.C. Genetica Medica, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy.

International journal of molecular sciences

|November 14, 2023

概括

染色体不稳定性 (CIN) 是癌症异质性的驱动因素,预测神经母细胞瘤 (NB) 患者的存活率较低. 高断点不稳定指数 (BPI) 表示更糟糕的结果,即使经过对已知的预后因素进行调整.

科学领域:

遗传学是一个遗传学.
在瘤学瘤学.
基因组学就是基因组学.

背景情况:

染色体不稳定性 (CIN) 是人类癌症的一个关键特征,有助于形积分和瘤内部异质性.
神经母细胞瘤 (NB) 是一种儿科癌症,其中CIN的预后意义需要进一步阐明.

研究的目的:

在诊断时调查神经母细胞瘤 (NB) 患者中CIN的预后价值.
用一种新的断点不稳定指数 (BPI) 来量化全球染色体不稳定性.

主要方法:

对451个初级NB瘤进行了阵列比较基因组杂交 (aCGH).
断点不稳定指数 (BPI) 是根据染色体臂的增加或损失导致的DNA断点总数来计算的.
考克斯回归模型被用来评估BPI与患者存活率之间的关联,并根据临床因素进行调整.

主要成果:

在NB临床风险组中观察到染色体破裂的显著差异.
较高的BPI值与NB患者存活率下降有很强的关联.
这种预后关联在调整NB阶段,患者年龄和MYCN基因放大状态后仍然显著.

结论:

BPI是NB全球染色体不稳定性的强有力的定量衡量标准.
升高的BPI是神经母细胞瘤生存的显著负预后生物标志物.
BPI的预后影响在特定亚组中尤为明显,包括没有MYCN放大且具有细分染色体异常的低风险NB患者.

关键词:

没有积症.断点不稳定性指数是什么染色体不稳定性染色体不稳定性神经母细胞瘤的神经母细胞瘤

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