isocitrate dehydrogenase human 5 Article 4 Humans 3 Isocitrate Dehydrogenase 3 brain tumor 3 controlled study 3 gene expression 3 genetics 3 glioblastoma 3 major clinical study 3 metabolism 3 unclassified drug 3 Brain Neoplasms 2 Gene expression 2 Glioblastoma 2 Mutation 2 Prognosis 2 adult 2 algorithm 2 diagnostic test accuracy study 2 female 2 gene mutation 2 human tissue 2 immunohistochemistry 2 male 2 mutation 2 2-hydroxyglutarate 1 Astrocytoma 1 Bacterial Proteins 1