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All the 1p19q codeleted gliomas are mutated on IDH1 or IDH2

Labussière, M., Idbaih, A., Wang, X.-W., Marie, Y., Boisselier, B., Falet, C., Paris, S., Laffaire, J., Carpentier, C., Crinière, E., Ducray, F., El Hallani, S., Mokhtari, K., Hoang-Xuan, K., Delattre, J.-Y., Sanson, M.·2010·Neurology

Abstract

BACKGROUND: Recently, the gene encoding the human cytosolic NADPH-dependent isocitrate dehydrogenase (IDH1) was reported frequently mutated in gliomas. Rare mutations were also found in the sequence of the mitochondrial isoform IDH2. METHODS: In a series of 764 gliomas genome-wide characterized, we determined the presence of mutations in the sequences of both IDH1 and IDH2 genes by direct sequencing. RESULTS: We found that all tumors with complete 1p19q codeletion (n = 128) were mutated in the IDH1 (118) or IDH2 (10) gene. This 100% mutation rate contrasted strikingly with other gliomas exhibiting either variable 1p and 19q alterations (n = 159, IDH1/IDH2 mutation rate of 33%) or no 1p19q alteration (n = 477, IDH1/IDH2 mutation rate 32%). Our data also confirm the prognostic impact of IDH1/IDH2 mutation in gliomas whatever grade considered: patients harboring mutations of IDH1/IDH2 have an improved median overall survival. Moreover, in WHO grade II and III gliomas, 3 groups with significantly different outcomes were identified according to their 1p19q and IDH1/IDH2 statuses. Tumors carrying both alterations had longer overall survival than their nonmutated counterpart. CONCLUSIONS: This exclusive association suggests a new mechanism of tumorigenesis. Perhaps the IDH1/IDH2 mutation is a prerequisite for the occurrence of the t(1;19) translocation, or it is required for the 1p19q codeleted cells to acquire a tumor phenotype.

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Metadata

Authors
Labussière, M., Idbaih, A., Wang, X.-W., Marie, Y., Boisselier, B., Falet, C., Paris, S., Laffaire, J., Carpentier, C., Crinière, E., Ducray, F., El Hallani, S., Mokhtari, K., Hoang-Xuan, K., Delattre, J.-Y., & Sanson, M.
Venue
Neurology
Published
2010-06-08
Volume
74
Issue
23
Pages
1886-1890
ISSN
  • 0028-3878 (ISSN-L)
  • 1526-632X
OpenAlex
W1975862651
Cited by
260
References
4
FWCI
10.63
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: All the 1p19q codeleted gliomas are mutated on IDH1 or IDH2. https://app.cochat.ai/papers/10.1212/wnl.0b013e3181e1cf3a
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Labussière, M., Idbaih, A., Wang, X.-W., Marie, Y., Boisselier, B., Falet, C., Paris, S., Laffaire, J., Carpentier, C., Crinière, E., Ducray, F., El Hallani, S., Mokhtari, K., Hoang-Xuan, K., Delattre, J.-Y., & Sanson, M. (2010). All the 1p19q codeleted gliomas are mutated on IDH1 or IDH2. Neurology. https://doi.org/10.1212/wnl.0b013e3181e1cf3a

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