GliomaAstrocytomaBrain NeoplasmsGlioblastomaOligodendrogliomaSupratentorial NeoplasmsBrain Stem NeoplasmsHypothalamic NeoplasmsSpinal Cord NeoplasmsEpendymomaNeoplasm GradingCentral Nervous System NeoplasmsMeningiomaNimustineImmunohistochemistryOptic Nerve NeoplasmsIsocitrate DehydrogenaseCerebellar NeoplasmsMeningeal NeoplasmsOptic Nerve GliomaAstrocytesChromosomes, Human, Pair 19Cell Line, TumorGlial Fibrillary Acidic ProteinNervous System NeoplasmsGene Expression Regulation, NeoplasticTuberous SclerosisTumor Cells, CulturedPrognosisDacarbazineTumor Markers, BiologicalGenes, Neurofibromatosis 1Neurofibromatosis 1Chromosomes, Human, Pair 10Ki-67 AntigenImmunoenzyme TechniquesChromosomes, Human, Pair 1Cerebral Ventricle NeoplasmsNeoplasms, NeuroepithelialBrainMagnetic Resonance ImagingCranial Nerve NeoplasmsLoss of HeterozygosityDNA, NeoplasmAntineoplastic Agents, AlkylatingNeoplasm InvasivenessGenes, p53Reverse Transcriptase Polymerase Chain ReactionInterleukin-13 Receptor alpha2 SubunitTumor Suppressor Protein p53Neoplasm ProteinsMedulloblastomaNeurofibromin 1TenascinRNA, MessengerDisease ProgressionTissue Array AnalysisPTEN PhosphohydrolaseSurvival AnalysisMice, NudeNeurilemmomaNitrosourea CompoundsNeurosurgical ProceduresCraniotomyMutationBlotting, WesternTumor Suppressor ProteinsNeovascularization, PathologicCell ProliferationReceptor, Epidermal Growth FactorFourth VentricleChromosomes, Human, Pair 17Optic ChiasmDNA Modification MethylasesSurvival RateInfratentorial NeoplasmsDNA MethylationApoptosisGene AmplificationNeoplasm Recurrence, LocalProto-Oncogene Proteins B-rafChromosome DeletionCell Transformation, NeoplasticCarmustineRNA, NeoplasmAcrylonitrileCombined Modality TherapyIn Situ Hybridization, FluorescenceNeoplastic Stem CellsCell DivisionGene DosageBase SequenceGene Expression ProfilingRetrospective StudiesReceptor, Platelet-Derived Growth Factor alphaKaplan-Meier EstimatePolymerase Chain ReactionDNA Repair EnzymesMolecular Sequence DataGenes, Tumor Suppressor