MethylPurify: tumor purity deconvolution and differential methylation detection from single tumor DNA methylomes.
MethylPurify: tumor purity deconvolution and differential methylation detection from single tumor DNA methylomes.
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MmethylPurify:从单个肿瘤 DNA 甲基化组中进行肿瘤纯度解卷积和差异甲基化检测
DOI:
10.1186/s13059-014-0419-x
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发表时间:
2014-08-07
期刊:
影响因子:
12.3
通讯作者:
Liu XS
中科院分区:
文献类型:
--
作者:
Zheng X;Zhao Q;Wu HJ;Li W;Wang H;Meyer CA;Qin QA;Xu H;Zang C;Jiang P;Li F;Hou Y;He J;Wang J;Wang J;Zhang P;Zhang Y;Liu XS
We propose a statistical algorithm MethylPurify that uses regions with bisulfite reads showing discordant methylation levels to infer tumor purity from tumor samples alone. MethylPurify can identify differentially methylated regions (DMRs) from individual tumor methylome samples, without genomic variation information or prior knowledge from other datasets. In simulations with mixed bisulfite reads from cancer and normal cell lines, MethylPurify correctly inferred tumor purity and identified over 96% of the DMRs. From patient data, MethylPurify gave satisfactory DMR calls from tumor methylome samples alone, and revealed potential missed DMRs by tumor to normal comparison due to tumor heterogeneity. The online version of this article (doi:10.1186/s13059-014-0419-x) contains supplementary material, which is available to authorized users.
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