IDH3A and glioblastoma: According to the World Health Organization (WHO) classification, the majority of gliomas are diffuse and stratified into three molecular subtypes: (1) Isocitrate dehydrogenase (IDH) mutant-1p/19q co-deleted (oligodendroglioma), (2) IDH-mutant-1p/19q retained (astrocytoma), and (3) IDH-wildtype glioblastoma (GBM) [2].