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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >A gene expression-based method to diagnose clinically distinct subgroups of diffuse large B cell lymphoma.
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A gene expression-based method to diagnose clinically distinct subgroups of diffuse large B cell lymphoma.

机译:一种基于基因表达的方法,可诊断弥漫性大B细胞淋巴瘤的临床不同亚组。

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摘要

To classify cancer specimens by their gene expression profiles, we created a statistical method based on Bayes' rule that estimates the probability of membership in one of two cancer subgroups. We used this method to classify diffuse large B cell lymphoma (DLBCL) biopsy samples into two gene expression subgroups based on data obtained from spotted cDNA microarrays. The germinal center B cell-like (GCB) DLBCL subgroup expressed genes characteristic of normal germinal center B cells whereas the activated B cell-like (ABC) DLBCL subgroup expressed a subset of the genes that are characteristic of plasma cells, particularly those encoding endoplasmic reticulum and golgi proteins involved in secretion. We next used this predictor to discover these subgroups within a second set of DLBCL biopsies that had been profiled by using oligonucleotide microarrays [Shipp, M. A., et al. (2002) Nat. Med. 8, 68-74]. The GCB and ABC DLBCL subgroups identified in this data set had significantly different 5-yr survival ratesafter multiagent chemotherapy (62% vs. 26%; P
机译:为了通过基因表达谱对癌症样本进行分类,我们基于贝叶斯法则创建了一种统计方法,该方法估计了两个癌症亚组之一的隶属率。我们使用这种方法根据从斑点cDNA芯片获得的数据将弥漫性大B细胞淋巴瘤(DLBCL)活检样品分为两个基因表达亚组。生发中心B细胞样(GCB)DLBCL亚组表达正常生发中心B细胞特有的基因,而激活的B细胞样(ABC)DLBCL亚组表达浆细胞特有的基因子集,特别是编码内质性的那些网状和高尔基体蛋白参与分泌。接下来,我们使用该预测因子在第二组DLBCL活检组织中发现了这些亚组,这些组已经通过使用寡核苷酸微阵列进行了分析[Shipp,M. A.,等。 (2002)Nat。中8、68-74]。与其他DLBCL队列的分析一致,在该数据集中确定的GCB和ABC DLBCL亚组在多药化疗后的5年生存率显着不同(62%比26%; P≤0.0051)。这些结果证明了这种基于基因表达的预测子能够将DLBCLs分为生物学和临床上不同的亚组,而与用于测量基因表达的方法无关。

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