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Pan-cancer analysis of whole genomes

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  4. Analyses of non-coding somatic drivers in 2,658 cancer whole genomes

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  5. Patterns of somatic structural variation in human cancer genomes

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  3. Retrospective evaluation of whole exome and genome mutation calls in 746 cancer samples

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Cancer is driven by genetic change, and the advent of massively parallel sequencing has enabled systematic documentation of this variation at the whole-genome scale1-3. Here we report the integrative analysis of 2,658 whole-cancer genomes and their matching normal tissues across 38 tumour types from the Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium of the International Cancer Genome Consortium (ICGC) and The Cancer Genome Atlas (TCGA). We describe the generation of the PCAWG resource, facilitated by international data sharing using compute clouds. On average, cancer genomes contained 4-5 driver mutations when combining coding and non-coding genomic elements; however, in around 5% of cases no drivers were identified, suggesting that cancer driver discovery is not yet complete. Chromothripsis, in which many clustered structural variants arise in a single catastrophic event, is frequently an early event in tumour evolution; in acral melanoma, for example, these events precede most somatic point mutations and affect several cancer-associated genes simultaneously. Cancers with abnormal telomere maintenance often originate from tissues with low replicative activity and show several mechanisms of preventing telomere attrition to critical levels. Common and rare germline variants affect patterns of somatic mutation, including point mutations, structural variants and somatic retrotransposition. A collection of papers from the PCAWG Consortium describes non-coding mutations that drive cancer beyond those in the TERT promoter4; identifies new signatures of mutational processes that cause base substitutions, small insertions and deletions and structural variation5,6; analyses timings and patterns of tumour evolution7; describes the diverse transcriptional consequences of somatic mutation on splicing, expression levels, fusion genes and promoter activity8,9; and evaluates a range of more-specialized features of cancer genomes8,10-18.

Original languageEnglish
JournalNature
Volume578
Issue number7793
Pages (from-to)82-93
Number of pages12
ISSN0028-0836
DOIs
Publication statusPublished - 6 Feb 2020

    Research areas

  • Cell Proliferation/genetics, Cellular Senescence/genetics, Chromothripsis, Cloud Computing, DNA Mutational Analysis, Evolution, Molecular, Female, Genome, Human/genetics, Genomics, Germ-Line Mutation/genetics, High-Throughput Nucleotide Sequencing, Humans, Information Dissemination, Male, Mutagenesis/genetics, Mutation, Neoplasms/classification, Oncogenes/genetics, Promoter Regions, Genetic/genetics, RNA Splicing/genetics, Reproducibility of Results, Telomerase/genetics, Telomere/genetics

ID: 61863829