Volume 30, Issue 1 pp. 7-11
Rapid Communication
Free Access

IDH1 mutations at residue p.R132 (IDH1R132) occur frequently in high-grade gliomas but not in other solid tumors

Fonnet E. Bleeker

Fonnet E. Bleeker

Neurosurgical Center Amsterdam, Location Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands

Laboratory of Molecular Genetics, The OncoGenomics Center, Institute for Cancer Research and Treatment, University of Torino, Medical School, Candiolo, Italy

Search for more papers by this author
Simona Lamba

Simona Lamba

Laboratory of Molecular Genetics, The OncoGenomics Center, Institute for Cancer Research and Treatment, University of Torino, Medical School, Candiolo, Italy

Search for more papers by this author
Sieger Leenstra

Sieger Leenstra

Department of Neurosurgery, St. Elisabeth Ziekenhuis, Tilburg, The Netherlands

Department of Neurosurgery, Erasmus Medical Center, Rotterdam, The Netherlands

Search for more papers by this author
Dirk Troost

Dirk Troost

Departments of Neuropathology, The Netherlands

Search for more papers by this author
Theo Hulsebos

Theo Hulsebos

Department of Neurogenetics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands

Search for more papers by this author
W. Peter Vandertop

W. Peter Vandertop

Neurosurgical Center Amsterdam, Location Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands

Neurosurgical Center Amsterdam, Location VU University Medical Center, Amsterdam, The Netherlands

Search for more papers by this author
Milo Frattini

Milo Frattini

Department of Experimental Oncology, Istituto Nazionale Tumori; Milan, Italy

Laboratory of Molecular Diagnostic Institute of Pathology, Locarno, Switzerland

Search for more papers by this author
Francesca Molinari

Francesca Molinari

Laboratory of Molecular Diagnostic Institute of Pathology, Locarno, Switzerland

Search for more papers by this author
Margaret Knowles

Margaret Knowles

Section of Experimental Oncology, Leeds Institute for Molecular Medicine, Leeds, United Kingdom

Search for more papers by this author
Aniello Cerrato

Aniello Cerrato

Institute of Endocrinology and Experimental Oncology, National Council of Research, Naples, Italy

Search for more papers by this author
Monica Rodolfo

Monica Rodolfo

Department of Experimental Oncology, Istituto Nazionale Tumori; Milan, Italy

Search for more papers by this author
Aldo Scarpa

Aldo Scarpa

Department of Pathology, Section of Anatomic Pathology, University of Verona, Verona, Italy

Search for more papers by this author
Lara Felicioni

Lara Felicioni

Clinical Research Center, Center of Excellence on Aging, University-Foundation, Chieti, Italy

Search for more papers by this author
Fiamma Buttitta

Fiamma Buttitta

Clinical Research Center, Center of Excellence on Aging, University-Foundation, Chieti, Italy

Search for more papers by this author
Sara Malatesta

Sara Malatesta

Clinical Research Center, Center of Excellence on Aging, University-Foundation, Chieti, Italy

Search for more papers by this author
Antonio Marchetti

Antonio Marchetti

Clinical Research Center, Center of Excellence on Aging, University-Foundation, Chieti, Italy

Search for more papers by this author
Alberto Bardelli

Corresponding Author

Alberto Bardelli

Laboratory of Molecular Genetics, The OncoGenomics Center, Institute for Cancer Research and Treatment, University of Torino, Medical School, Candiolo, Italy

FIRC Institute of Molecular Oncology, Milan, Italy

Laboratory of Molecular Genetics, Institute for Cancer Research and Treatment, University of Torino; Medical School, Str prov 142Km 3.95; Candiolo (TO), 10060, ItalySearch for more papers by this author
First published: 31 December 2008
Citations: 316

Communicated by Richard Wooster

Abstract

Systematic sequence profiling of the Glioblastoma Multiforme (GBM) genome has recently led to the identification of somatic mutations in the isocitrate dehydrogenase 1 (IDH1) gene. Interestingly, only the evolutionarily conserved residue R132 located in the substrate binding site of IDH1 was found mutated in GBM. At present, the occurrence and the relevance of p.R132 (IDH1R132) variants in tumors other than GBMs is largely unknown. We searched for mutations at position R132 of the IDH1 gene in a panel of 672 tumor samples. These included high-grade glioma, gastrointestinal stromal tumors (GIST), melanoma, bladder, breast, colorectal, lung, ovarian, pancreas, prostate, and thyroid carcinoma specimens. In addition, we assessed a panel of 84 cell lines from different tumor lineages. Somatic mutations affecting the IDH1R132 residue were detected in 20% (23 of 113) high-grade glioma samples. In addition to the previously reported p.R132H and p.R132S alleles, we identified three novel somatic mutations (p.R132C, p.R132G, and p.R132L) affecting residue IDH1R132 in GBM. Strikingly, no IDH1 mutations were detected in the other tumor types. These data indicate that cancer mutations affecting IDH1R132 are tissue-specific, and suggest that it plays a unique role in the development of high-grade gliomas. Hum Mutat 30, 7–11, 2009. © 2008 Wiley-Liss, Inc.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.