IDH1/IDH2 but not TP53 mutations predict prognosis in Bulgarian glioblastoma patients.

Abstract:

:Mutations in genes encoding isocitrate dehydrogenase isoforms 1 (IDH1) and 2 (IDH2) have been associated with good prognosis for patients with brain neoplasias and have been commonly found together with mutated TP53 gene. To determine the prevalence of IDH1, IDH2, and TP53 mutations and their impact on overall survival 106 glioblastoma patients were analysed. IDH1 mutations were detected in 13 and IDH2 mutation in one patient. Two homozygous samples with R132H mutation in IDH1 gene and a novel aberration K129R in IDH2 gene were found. Sixty-four percent of IDH1/IDH2 mutated tumours harboured also a mutation in TP53 gene. Genetic aberrations in TP53 were present in 37 patients. Statistical analysis of the impact of the studied factors on the overall survival showed that the mutations in IDH1/IDH2, but not the ones in TP53, were associated with longer survival. Also, the impact of age on prognosis was confirmed. This is the first comprehensive study on glioblastomas in Bulgaria. Our results suggest that IDH1/IDH2 but not TP53 mutations together with other prognostic factors such as age might be applied in clinical practice for prediction of outcome in patients with glioblastomas.

journal_name

Biomed Res Int

authors

Stancheva G,Goranova T,Laleva M,Kamenova M,Mitkova A,Velinov N,Poptodorov G,Mitev V,Kaneva R,Gabrovsky N

doi

10.1155/2014/654727

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

654727

eissn

2314-6133

issn

2314-6141

journal_volume

2014

pub_type

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