Gene amplification is a poor prognostic factor in anaplastic oligodendrogliomas. - Archive ouverte HAL Access content directly
Journal Articles Neuro-Oncology Year : 2008

Gene amplification is a poor prognostic factor in anaplastic oligodendrogliomas.

(1, 2) , (1) , (1) , (1, 3) , (1, 3) , (1, 3) , (1) , (1) , (1) , (1) , (1, 2) , (1) , (1, 2) , (1, 2) , (1, 2)
1
2
3
Yannick Marie
  • Function : Author
  • PersonId : 760117
  • IdRef : 186339437

Abstract

Various gene amplifications have been observed in gliomas. Prognostic-genomic correlations testing simultaneously all these amplified genes have never been conducted in anaplastic oligodendrogliomas. A set of 38 genes that have been reported to be amplified in gliomas and investigated as the main targets of amplicons were studied in a series of 52 anaplastic oligodendrogliomas using bacterial artificial chromosome-array based comparative genomic hybridization and quantitative polymerase chain reaction. Among the 38 target genes, 15 were found to be amplified in at least one tumor. Overall, 27% of anaplastic oligodendrogliomas exhibited at least one gene amplification. The most frequently amplified genes were epidermal growth factor receptor (EGFR) and cyclin-dependent kinase 4/sarcoma amplified sequence (CDK4/SAS) in 17% and 8% of anaplastic oligodendrogliomas, respectively. Gene amplification and codeletion of chromosome arms 1p/19q were perfectly exclusive (p = 0.005). In uni- and multivariate analyses, gene amplification was a negative prognostic factor for progression-free survival and overall survival in anaplastic oligodendrogliomas, providing complementary information to the classic prognostic factors identified in anaplastic oligodendrogliomas (extent of surgery, KPS, and chromosome arms 1p/19q status).

Dates and versions

inserm-00310501 , version 1 (12-08-2008)

Identifiers

Cite

Ahmed Idbaih, Emmanuelle Crinière, Yannick Marie, Audrey Rousseau, Karima Mokhtari, et al.. Gene amplification is a poor prognostic factor in anaplastic oligodendrogliomas.. Neuro-Oncology, 2008, 10 (4), pp.540-7. ⟨10.1215/15228517-2008-022⟩. ⟨inserm-00310501⟩
108 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More