Distinct genomic aberrations associated with ERG rearranged prostate cancer

Francesca Demichelis, Sunita R. Setlur, Rameen Beroukhim, Sven Perner, Jan O. Korbel, Christopher J. Lafargue, Dorothee Pflueger, Cara Pina, Matthias D. Hofer, Andrea Sboner, Maria A. Svensson, David S. Rickman, Alex Urban, Michael Snyder, Matthew Meyerson, Charles Lee, Mark B. Gerstein, Rainer Kuefer, Mark A. Rubin

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

Emerging molecular and clinical data suggest that ETS fusion prostate cancer represents a distinct molecular subclass, driven most commonly by a hormonally regulated promoter and characterized by an aggressive natural history. The study of the genomic landscape of prostate cancer in the light of ETS fusion events is required to understand the foundation of this molecularly and clinically distinct subtype. We performed genome-wide profiling of 49 primary prostate cancers and identified 20 recurrent chromosomal copy number aberrations' mainly occurring as genomic losses. Co-occurring events included losses at I9ql3.32 and Ip22.l. We discovered three genomic events associated with ERG rearranged prostate cancer' affecting 6q 7q and I6q. 6q loss in nonrearranged prostate cancer is accompanied by gene expression deregulation in an independent dataset and by protein deregulation of MYO6. To analyze copy number alterations within the ETS genes we performed a comprehensive analysis of all 27 ETS genes and of the 3 Mbp genomic area between ERG and TMPRSS2 (2lq) with an unprecedented resolution (30 bp). We demonstrate that high-resolution tiling arrays can be used to pinpoint breakpoints leading to fusion events. This study provides further support to define a distinct molecular subtype of prostate cancer based on the presence of ETS gene rearrangements.

Original languageEnglish (US)
Pages (from-to)366-380
Number of pages15
JournalGenes Chromosomes and Cancer
Volume48
Issue number4
DOIs
StatePublished - Apr 2009

ASJC Scopus subject areas

  • Genetics
  • Cancer Research

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