PTEN gene mutations are seen in high-grade but not in low-grade gliomas.

Journal Article (Journal Article)

The PTEN gene, located on 10q23, has recently been implicated as a candidate tumor suppressor gene in brain, breast and prostate tumors. In the present study, 123 brain tumors, including various grades and histological types of gliomas occurring in children and adults, were analyzed for PTEN mutations by SSCP assay and sequencing. Mutations in the PTEN gene were found in 13 of 42 adult glioblastomas and 3 of 13 adult anaplastic astrocytomas, whereas none of the 21 low-grade adult gliomas or the 22 childhood gliomas of all grades showed mutations. The single medulloblastoma with a mutation was a recurrent tumor that also possessed a p53 mutation. High-grade adult gliomas with PTEN mutations included cases that also contained gene amplification or p53 gene mutations, as well as cases that did not contain either of these abnormalities. There was no obvious relationship between presence of PTEN mutation and survival; however, there was a tendency for PTEN mutations to occur in older age group patients. This analysis suggest that PTEN gene mutations are restricted to high-grade adult gliomas and that this abnormality is independent of the presence or absence of gene amplification or p53 gene mutation in these tumors.

Full Text

Duke Authors

Cited Authors

  • Rasheed, BK; Stenzel, TT; McLendon, RE; Parsons, R; Friedman, AH; Friedman, HS; Bigner, DD; Bigner, SH

Published Date

  • October 1, 1997

Published In

Volume / Issue

  • 57 / 19

Start / End Page

  • 4187 - 4190

PubMed ID

  • 9331072

International Standard Serial Number (ISSN)

  • 0008-5472


  • eng

Conference Location

  • United States