IDH3A and glioblastoma: Glioblastoma (GBM) previously known as Glioblastoma Multiforme is now recognized as Glioblastoma Isocitrate dehydrogenase (IDH) wild-type, according to the WHO classification of Tumors of the Central Nervous System from 2021, and is treated separately from Astrocytoma, IDH-mutant tumors, which is different than in previous WHO classifications [1,2].