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Identification of a CpG Island Methylator Phenotype that Defines a Distinct Subgroup of Glioma

  • Houtan Noushmehr
  • , Daniel J. Weisenberger
  • , Kristin Diefes
  • , Heidi S. Phillips
  • , Kanan Pujara
  • , Benjamin P. Berman
  • , Fei Pan
  • , Christopher E. Pelloski
  • , Erik P. Sulman
  • , Krishna P. Bhat
  • , Roel G.W. Verhaak
  • , Katherine A. Hoadley
  • , D. Neil Hayes
  • , Charles M. Perou
  • , Heather K. Schmidt
  • , Li Ding
  • , Richard K. Wilson
  • , David Van Den Berg
  • , Hui Shen
  • , Henrik Bengtsson
  • Pierre Neuvial, Leslie M. Cope, Jonathan Buckley, James G. Herman, Stephen B. Baylin, Peter W. Laird*, Kenneth Aldape
*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2040 Scopus citations

Abstract

We have profiled promoter DNA methylation alterations in 272 glioblastoma tumors in the context of The Cancer Genome Atlas (TCGA). We found that a distinct subset of samples displays concerted hypermethylation at a large number of loci, indicating the existence of a glioma-CpG island methylator phenotype (G-CIMP). We validated G-CIMP in a set of non-TCGA glioblastomas and low-grade gliomas. G-CIMP tumors belong to the proneural subgroup, are more prevalent among lower-grade gliomas, display distinct copy-number alterations, and are tightly associated with IDH1 somatic mutations. Patients with G-CIMP tumors are younger at the time of diagnosis and experience significantly improved outcome. These findings identify G-CIMP as a distinct subset of human gliomas on molecular and clinical grounds.

Original languageEnglish
Pages (from-to)510-522
Number of pages13
JournalCancer Cell
Volume17
Issue number5
DOIs
StatePublished - 18 May 2010
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by NIH/NCI grants U24 CA126561 and U24 CA143882-01 (P.W.L. and S.B.B.), grants from the M.D. Anderson Center for Cancer Epigenetics, the Brain Tumor Funders' Collaborative, the V Foundation, and the Rose Foundation, and SPORE grant P50CA127001 from NIH/NCI (K.A.). We thank Dennis Maglinte and members of the USC Epigenome Center for helpful discussions, Andreana Rivera for technical assistance, and Marisol Guerrero for editorial assistance. P.W.L. is a shareholder, consultant, and scientific advisory board member of Epigenomics, AG, which has a commercial interest in DNA methylation markers. This work was not supported by Epigenomics, AG. K.A. is a consultant and scientific advisory board member for Castle Biosciences, which has a commercial interest in molecular diagnostics. This work was not supported by Castle Biosciences.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • CELLCYCLE
  • DNA
  • HUMDISEASE

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