| Namespace | disease_ontology | Obsolete | false |
| description | An IDH-mutant anaplastic astrocytoma that is characterized by the presence of necrosis and/or microvascular proliferation or homozygous deletion of CDKN2A and/or CDKN2B genes. The term glioblastoma no longer applies to central nervous system WHO grade 4 IDH-mutant astrocytomas. |