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PMID: 25383969 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Systematic analysis of noncoding somatic mutations and gene expression alterations across 14 tumor types.

Nature genetics ·Vol. 46 ·No. 12 ·2014-12-00 ·Pages 1258-63

Fredriksson NJ, Ny L, Nilsson JA, Larsson E

Abstract

Somatic mutations in noncoding sequences are poorly explored in cancer, a rare exception being the recent identification of activating mutations in TERT regulatory DNA. Although this finding is suggestive of a general mechanism for oncogene activation, this hypothesis remains untested. Here we map somatic mutations in 505 tumor genomes across 14 cancer types and systematically screen for associations between mutations in regulatory regions and RNA-level changes. We identify recurrent promoter mutations in several genes but find that TERT mutations are exceptional in showing a strong and genome-wide significant association with increased expression. Detailed analysis of TERT across cancers shows that the strength of this association is highly variable and is strongest in copy number-stable cancers such as thyroid carcinoma. We additionally propose that TERT promoter mutations control expression of the nearby gene CLPTM1L. Our analysis provides a detailed pan-cancer view of TERT transcriptional activation but finds no clear evidence for frequent oncogenic promoter mutations beyond TERT.

MeSH Terms
Carrier Proteins/genetics Cell Transformation, Neoplastic DNA Mutational Analysis Gene Expression Profiling Gene Expression Regulation, Neoplastic Humans Intracellular Signaling Peptides and Proteins Mutation Neoplasms/genetics,metabolism Promoter Regions, Genetic Telomerase/genetics
Chemicals
Carrier Proteins DPH3 protein, human Intracellular Signaling Peptides and Proteins TERT protein, human Telomerase
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Fredriksson Nils J
Department of Medical Biochemisty and Cell Biology, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Ny Lars
Department of Oncology, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Nilsson Jonas A
Sahlgrenska Cancer Center, Department of Surgery, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Larsson Erik
Department of Medical Biochemisty and Cell Biology, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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Article Info
Journal
Nature genetics
Abbr.
Nat Genet
ISSN
1546-1718
Published
2014-12-00
Epub
2014-00-10
Pages
1258-63
Language
English
Region
United States
NLM ID
9216904
Subset
IM
Analysis Services
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