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ALK Mutations Confer Differential Oncogenic Activation and Sensitivity to ALK Inhibition Therapy in Neuroblastoma

机译:ALK突变赋予神经母细胞瘤差异性致癌激活和对ALK抑制疗法的敏感性。

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摘要

Genetic studies have established anaplastic lymphoma kinase (ALK), a cell surface receptor tyrosine kinase, as a tractable molecular target in neuroblastoma. We describe comprehensive genomic, biochemical, and computational analyses of ALK mutations across 1,596 diagnostic neuroblastoma samples. ALK tyrosine kinase domain mutations occurred in 8% of samples-at three hot spots and 13minor sites-and correlated significantly with poorer survival in high- and intermediate-risk neuroblastoma. Biochemical and computational studies distinguished oncogenic (constitutively activating) from nononcogenic mutations and allowed robust computational prediction of their effects. The mutated variants also showed differential invitro crizotinib sensitivities. Our studies identify ALK genomic status as a clinically important therapeutic stratification tool in neuroblastoma and will allow tailoring of ALK-targeted therapy to specific mutations.
机译:遗传学研究已经建立了间变性淋巴瘤激酶(ALK),一种细胞表面受体酪氨酸激酶,作为神经母细胞瘤中的易处理分子靶标。我们描述了横跨1,596个诊断性神经母细胞瘤样品的ALK突变的综合基因组学,生化和计算分析。 ALK酪氨酸激酶结构域突变发生在3个热点和13个小位点的8%的样本中,并且与高危和中危神经母细胞瘤的较差生存率显着相关。生化和计算研究将致癌性(组成性激活)与非致癌性突变区分开来,并对其结果进行了有力的计算预测。突变的变体还显示出不同的克唑替尼体外敏感性。我们的研究将ALK基因组状态鉴定为神经母细胞瘤中临床上重要的治疗分层工具,并将针对特定突变量身定制针对ALK的疗法。

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