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| Item Type: | Article |
|---|---|
| Title: | Retrospective evaluation of whole exome and genome mutation calls in 746 cancer samples |
| Creators Name: | Bailey, M.H. and Meyerson, W.U. and Dursi, L.J. and Wang, L.B. and Dong, G. and Liang, W.W. and Weerasinghe, A. and Li, S. and Li, Y. and Kelso, S. and Saksena, G. and Ellrott, K. and Wendl, M.C. and Wheeler, D.A. and Getz, G. and Simpson, J.T. and Gerstein, M.B. and Ding, Li |
| Abstract: | The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) curated consensus somatic mutation calls using whole exome sequencing (WES) and whole genome sequencing (WGS), respectively. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium, which aggregated whole genome sequencing data from 2,658 cancers across 38 tumour types, we compare WES and WGS side-by-side from 746 TCGA samples, finding that ~80% of mutations overlap in covered exonic regions. We estimate that low variant allele fraction (VAF < 15%) and clonal heterogeneity contribute up to 68% of private WGS mutations and 71% of private WES mutations. We observe that ~30% of private WGS mutations trace to mutations identified by a single variant caller in WES consensus efforts. WGS captures both ~50% more variation in exonic regions and un-observed mutations in loci with variable GC-content. Together, our analysis highlights technological divergences between two reproducible somatic variant detection efforts. |
| Keywords: | Base Composition, Exome, Exons, Genetic Databases, Human Genome, Intergenic DNA, Mutation, Neoplasms, Retrospective Studies, Whole Exome Sequencing, Whole Genome Sequencing |
| Source: | Nature Communications |
| ISSN: | 2041-1723 |
| Publisher: | Nature Publishing Group |
| Volume: | 11 |
| Number: | 1 |
| Page Range: | 4748 |
| Date: | 21 September 2020 |
| Additional Information: | Roland F. Schwarz is a member of the PCAWG Consortium. Erratum in: Nat Commun 11(1): 6232. |
| Official Publication: | https://doi.org/10.1038/s41467-020-18151-y |
| PubMed: | View item in PubMed |
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