PMID- 23592488 OWN - NLM STAT- MEDLINE DCOM- 20131107 LR - 20211021 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 4 IP - 4 DP - 2013 Apr TI - Exomic sequencing of four rare central nervous system tumor types. PG - 572-83 AB - A heterogeneous population of uncommon neoplasms of the central nervous system (CNS) cause significant morbidity and mortality. To explore their genetic origins, we sequenced the exomes of 12 pleomorphic xanthoastrocytomas (PXA), 17 non-brainstem pediatric glioblastomas (PGBM), 8 intracranial ependymomas (IEP) and 8 spinal cord ependymomas (SCEP). Analysis of the mutational spectra revealed that the predominant single base pair substitution was a C:G>T:A transition in each of the four tumor types. Our data confirm the critical roles of several known driver genes within CNS neoplasms, including TP53 and ATRX in PGBM, and NF2 in SCEPs. Additionally, we show that activating BRAF mutations play a central role in both low and high grade glial tumors. Furthermore, alterations in genes coding for members of the mammalian target of rapamycin (mTOR) pathway were observed in 33% of PXA. Our study supports the hypothesis that pathologically similar tumors arising in different age groups and from different compartments may represent distinct disease processes with varied genetic composition. FAU - Bettegowda, Chetan AU - Bettegowda C AD - Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA. cbetteg1@jhmi.edu FAU - Agrawal, Nishant AU - Agrawal N FAU - Jiao, Yuchen AU - Jiao Y FAU - Wang, Yuxuan AU - Wang Y FAU - Wood, Laura D AU - Wood LD FAU - Rodriguez, Fausto J AU - Rodriguez FJ FAU - Hruban, Ralph H AU - Hruban RH FAU - Gallia, Gary L AU - Gallia GL FAU - Binder, Zev A AU - Binder ZA FAU - Riggins, Callen J AU - Riggins CJ FAU - Salmasi, Vafi AU - Salmasi V FAU - Riggins, Gregory J AU - Riggins GJ FAU - Reitman, Zachary J AU - Reitman ZJ FAU - Rasheed, Ahmed AU - Rasheed A FAU - Keir, Stephen AU - Keir S FAU - Shinjo, Sueli AU - Shinjo S FAU - Marie, Suely AU - Marie S FAU - McLendon, Roger AU - McLendon R FAU - Jallo, George AU - Jallo G FAU - Vogelstein, Bert AU - Vogelstein B FAU - Bigner, Darell AU - Bigner D FAU - Yan, Hai AU - Yan H FAU - Kinzler, Kenneth W AU - Kinzler KW FAU - Papadopoulos, Nickolas AU - Papadopoulos N LA - eng GR - R37 CA043460/CA/NCI NIH HHS/United States GR - R01 CA140316/CA/NCI NIH HHS/United States GR - CA057345/CA/NCI NIH HHS/United States GR - 5R01-CA140316/CA/NCI NIH HHS/United States GR - RC2DE020957/DE/NIDCR NIH HHS/United States GR - R37 CA057345/CA/NCI NIH HHS/United States GR - R01 CA057345/CA/NCI NIH HHS/United States GR - RC2 DE020957/DE/NIDCR NIH HHS/United States GR - T32 CA059365/CA/NCI NIH HHS/United States GR - T32 CA130840/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 SB - IM MH - Adolescent MH - Adult MH - Aged MH - Astrocytoma/*genetics MH - Central Nervous System Neoplasms/*genetics MH - Child MH - Child, Preschool MH - DNA Mutational Analysis MH - Ependymoma/*genetics MH - Exome MH - Female MH - Glioblastoma/*genetics MH - Humans MH - Infant MH - Male MH - Middle Aged MH - Polymerase Chain Reaction MH - Young Adult PMC - PMC3720605 EDAT- 2013/04/18 06:00 MHDA- 2013/11/08 06:00 PMCR- 2013/04/01 CRDT- 2013/04/18 06:00 PHST- 2013/04/18 06:00 [entrez] PHST- 2013/04/18 06:00 [pubmed] PHST- 2013/11/08 06:00 [medline] PHST- 2013/04/01 00:00 [pmc-release] AID - 964 [pii] AID - 10.18632/oncotarget.964 [doi] PST - ppublish SO - Oncotarget. 2013 Apr;4(4):572-83. doi: 10.18632/oncotarget.964.