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    Clonal diversification and histogenesis of malignant germ cell tumours

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    Authors
    Oliver, T. R. W.
    Chappell, L.
    Sanghvi, R.
    Deighton, L.
    Ansari-Pour, N.
    Dentro, S. C.
    Young, M. D.
    Coorens, T. H. H.
    Jung, H.
    Butler, T.
    Neville, M. D. C.
    Leongamornlert, D.
    Sanders, M. A.
    Hooks, Y.
    Cagan, A.
    Mitchell, T. J.
    Cortes-Ciriano, I.
    Warren, A. Y.
    Wedge, David C
    Heer, R.
    Coleman, N.
    Murray, M. J.
    Campbell, P. J.
    Rahbari, R.
    Behjati, S.
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    Affiliation
    Wellcome Sanger Institute, Hinxton, UK
    Issue Date
    2022
    
    Metadata
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    Abstract
    Germ cell tumours (GCTs) are a collection of benign and malignant neoplasms derived from primordial germ cells. They are uniquely able to recapitulate embryonic and extraembryonic tissues, which carries prognostic and therapeutic significance. The developmental pathways underpinning GCT initiation and histogenesis are incompletely understood. Here, we study the relationship of histogenesis and clonal diversification in GCTs by analysing the genomes and transcriptomes of 547 microdissected histological units. We find no correlation between genomic and histological heterogeneity. However, we identify unifying features including the retention of fetal developmental transcripts across tissues, expression changes on chromosome 12p, and a conserved somatic evolutionary sequence of whole genome duplication followed by clonal diversification. While this pattern is preserved across all GCTs, the developmental timing of the duplication varies between prepubertal and postpubertal cases. In addition, tumours of younger children exhibit distinct substitution signatures which may lend themselves as potential biomarkers for risk stratification. Our findings portray the extensive diversification of GCT tissues and genetic subclones as randomly distributed, while identifying overarching transcriptional and genomic features.
    Citation
    Oliver TRW, Chappell L, Sanghvi R, Deighton L, Ansari-Pour N, Dentro SC, et al. Clonal diversification and histogenesis of malignant germ cell tumours. Nature communications. 2022 Aug 11;13(1):4272. PubMed PMID: 35953478. Pubmed Central PMCID: PMC9372159. Epub 2022/08/12. eng.
    Journal
    Nature Communications
    URI
    http://hdl.handle.net/10541/625562
    DOI
    10.1038/s41467-022-31375-4
    PubMed ID
    35953478
    Additional Links
    https://dx.doi.org/10.1038/s41467-022-31375-4
    Type
    Article
    Language
    en
    ae974a485f413a2113503eed53cd6c53
    10.1038/s41467-022-31375-4
    Scopus Count
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    All Paterson Institute for Cancer Research

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