PMID- 23289977 OWN - NLM STAT- MEDLINE DCOM- 20140127 LR - 20220317 IS - 1750-3639 (Electronic) IS - 1015-6305 (Print) IS - 1015-6305 (Linking) VI - 23 IP - 4 DP - 2013 Jul TI - Glioblastoma with oligodendroglioma component (GBM-O): molecular genetic and clinical characteristics. PG - 454-61 LID - 10.1111/bpa.12018 [doi] AB - Glioblastoma (GBM) is an aggressive primary brain tumor with an average survival of approximately 1 year. A recently recognized subtype, glioblastoma with oligodendroglioma component (GBM-O), was designated by the World Health Organization (WHO) in 2007. We investigated GBM-Os for their clinical and molecular characteristics as compared to other forms of GBM. Tissue samples were used to determine EGFR, PTEN, and 1p and 19q status by fluorescence in situ hybridization (FISH); p53 and mutant IDH1 protein expression by immunohistochemistry (IHC); and MGMT promoter status by methylation-specific polymerase chain reaction (PCR). GBM-Os accounted for 11.9% of all GBMs. GBM-Os arose in younger patients compared to other forms of GBMs (50.7 years vs. 58.7 years, respectively), were more frequently secondary neoplasms, had a higher frequency of IDH1 mutations and had a lower frequency of PTEN deletions. Survival was longer in patients with GBM-Os compared to those with other GBMs, with median survivals of 16.2 and 8.1 months, respectively. Most of the survival advantage for GBM-O appeared to be associated with a younger age at presentation. Among patients with GBM-O, younger age at presentation and 1p deletion were most significant in conferring prolonged survival. Thus, GBM-O represents a subset of GBMs with distinctive morphologic, clinical and molecular characteristics. CI - (c) 2013 The Authors; Brain Pathology (c) 2013 International Society of Neuropathology. FAU - Appin, Christina L AU - Appin CL AD - Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA. FAU - Gao, Jingjing AU - Gao J FAU - Chisolm, Candace AU - Chisolm C FAU - Torian, Mike AU - Torian M FAU - Alexis, Dianne AU - Alexis D FAU - Vincentelli, Cristina AU - Vincentelli C FAU - Schniederjan, Matthew J AU - Schniederjan MJ FAU - Hadjipanayis, Costas AU - Hadjipanayis C FAU - Olson, Jeffrey J AU - Olson JJ FAU - Hunter, Stephen AU - Hunter S FAU - Hao, Chunhai AU - Hao C FAU - Brat, Daniel J AU - Brat DJ LA - eng GR - P30 CA138292/CA/NCI NIH HHS/United States GR - CA138292/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20130130 PL - Switzerland TA - Brain Pathol JT - Brain pathology (Zurich, Switzerland) JID - 9216781 RN - EC 1.1.1.41 (Isocitrate Dehydrogenase) RN - EC 1.1.1.42. (IDH1 protein, human) RN - EC 2.1.1.63 (O(6)-Methylguanine-DNA Methyltransferase) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 3.1.3.67 (PTEN Phosphohydrolase) RN - EC 3.1.3.67 (PTEN protein, human) RN - Chromosome 1, monosomy 1p SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Brain Neoplasms/diagnosis/*genetics/mortality MH - Chromosome Deletion MH - Chromosomes, Human, Pair 1/genetics MH - DNA Methylation MH - ErbB Receptors/*genetics MH - Female MH - Glioblastoma/diagnosis/*genetics/mortality MH - Humans MH - Isocitrate Dehydrogenase/*genetics MH - Kaplan-Meier Estimate MH - Male MH - Middle Aged MH - Mutation/genetics MH - O(6)-Methylguanine-DNA Methyltransferase/metabolism MH - Oligodendroglioma/diagnosis/*genetics/mortality MH - PTEN Phosphohydrolase/genetics MH - Retrospective Studies MH - Young Adult PMC - PMC4868066 MID - NIHMS785133 EDAT- 2013/01/08 06:00 MHDA- 2014/01/28 06:00 PMCR- 2013/01/30 CRDT- 2013/01/08 06:00 PHST- 2012/09/22 00:00 [received] PHST- 2012/12/22 00:00 [accepted] PHST- 2013/01/08 06:00 [entrez] PHST- 2013/01/08 06:00 [pubmed] PHST- 2014/01/28 06:00 [medline] PHST- 2013/01/30 00:00 [pmc-release] AID - BPA12018 [pii] AID - 10.1111/bpa.12018 [doi] PST - ppublish SO - Brain Pathol. 2013 Jul;23(4):454-61. doi: 10.1111/bpa.12018. Epub 2013 Jan 30.