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Nat Commun. 2014 Apr 8;5:3630. doi: 10.1038/ncomms4630.

The landscape of somatic mutations in epigenetic regulators across 1,000 paediatric cancer genomes.

Author information

1
1] Department of Computational Biology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA [2].
2
1] Department of Pathology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA [2].
3
Department of Computational Biology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA.
4
Department of Pathology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA.
5
The Pediatric Cancer Genome Project Laboratory, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA.
6
Department of Oncology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA.
7
1] Department of Pathology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA [2] Department of Oncology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA.
8
Department of Structural Biology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA.
9
Department of Biochemistry, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA.
10
1] The Genome Institute, Washington University School of Medicine, St Louis, Missouri 63108, USA [2] Department of Genetics, Washington University School of Medicine, 4444 Forest Park Ave, St Louis, Missouri 63108, USA [3] Siteman Cancer Center, Washington University, St Louis, Missouri 63108, USA.
11
Department of Developmental Neurobiology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA.

Abstract

Studies of paediatric cancers have shown a high frequency of mutation across epigenetic regulators. Here we sequence 633 genes, encoding the majority of known epigenetic regulatory proteins, in over 1,000 paediatric tumours to define the landscape of somatic mutations in epigenetic regulators in paediatric cancer. Our results demonstrate a marked variation in the frequency of gene mutations across 21 different paediatric cancer subtypes, with the highest frequency of mutations detected in high-grade gliomas, T-lineage acute lymphoblastic leukaemia and medulloblastoma, and a paucity of mutations in low-grade glioma and retinoblastoma. The most frequently mutated genes are H3F3A, PHF6, ATRX, KDM6A, SMARCA4, ASXL2, CREBBP, EZH2, MLL2, USP7, ASXL1, NSD2, SETD2, SMC1A and ZMYM3. We identify novel loss-of-function mutations in the ubiquitin-specific processing protease 7 (USP7) in paediatric leukaemia, which result in decreased deubiquitination activity. Collectively, our results help to define the landscape of mutations in epigenetic regulatory genes in paediatric cancer and yield a valuable new database for investigating the role of epigenetic dysregulations in cancer.

PMID:
24710217
PMCID:
PMC4119022
DOI:
10.1038/ncomms4630
[Indexed for MEDLINE]
Free PMC Article
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