Prognostic significance of IDH-1 and MGMT in patients with glioblastoma: one step forward, and one step back?

Radiat Oncol. 2011 Sep 13:6:115. doi: 10.1186/1748-717X-6-115.

Abstract

A group of 160 patients with primary glioblastoma treated with radiotherapy and temozolomide was analyzed for the impact of O6-methly-guanly-methyl-transferase (MGMT)-promoter methylation as well as isocitrate dehydrogenase (IDH)1-mutational status. Unexpectedly, overall survival or progression-free survival were not longer in the group with methylated MGMT-promoter as compared to patients without that methylation. IDH-1 mutations were significantly associated with increased overall survival.

MeSH terms

  • Adult
  • Aged
  • Brain Neoplasms / diagnosis*
  • Brain Neoplasms / radiotherapy*
  • DNA Methylation
  • Dacarbazine / analogs & derivatives
  • Dacarbazine / therapeutic use
  • Glioblastoma / diagnosis*
  • Glioblastoma / radiotherapy*
  • Humans
  • Isocitrate Dehydrogenase / genetics
  • Medical Oncology / methods
  • Middle Aged
  • Mutation
  • O(6)-Methylguanine-DNA Methyltransferase / genetics
  • Prognosis
  • Promoter Regions, Genetic
  • Temozolomide
  • Treatment Outcome

Substances

  • Dacarbazine
  • Isocitrate Dehydrogenase
  • IDH1 protein, human
  • O(6)-Methylguanine-DNA Methyltransferase
  • Temozolomide