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Purity estimation from differentially methylated sites using Illumina Infinium methylation microarray data

机译:使用Illumina Infinium甲基化微阵列数据的差异甲基化位点的纯度估计

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摘要

Solid tissues collected from patient-driven clinical settings are composed of both normal and cancer cells, which often precede complications in data analysis and epigenetic findings. The Purity estimation of samples is crucial for reliable genomic aberration identification and uniform inter-sample and inter-patient comparisons as well. Here, an effective and flexible method has been developed and designed to estimate the level of methylation, which infers tumor purity without prior knowledge from the other datasets. The comprehensive analysis of our approach on Illumina Infinium 450 k methylation microarray explains that TCGA Breast Cancer data exhibits improved performance for purity assessment. This assessment has a strong correlation with other advanced methods.
机译:从患者驱动的临床环境中收集的固体组织由正常和癌细胞和癌细胞组成,这通常先于数据分析和表观遗传结果中的并发症。 样品的纯度估计对于可靠的基因组畸变鉴定和均匀的样本间和患者间比较至关重要。 这里,已经开发了一种有效且灵活的方法,以估计甲基化水平,其在没有其他数据集的情况下缺乏肿瘤纯度的甲基化水平。 我们对Illumina Infinium 450 K甲基化微阵列的综合分析解释说,TCGA乳腺癌数据表现出改善的纯度评估性能。 该评估与其他先进方法具有很强的相关性。

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