| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Anaplastic oligoastrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Angioglioma | Is a | True | Glioma | Inferred relationship | Some |  | 
| Desmoplastic infantile astrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Dysembryoplastic neuroepithelial tumor | Is a | False | Glioma | Inferred relationship | Some |  | 
| Chordoid glioma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Large cell medulloblastoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Papillary ependymoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Pilocytic astrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Atypical choroid plexus papilloma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Gliofibroma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Polar spongioblastoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Subependymal giant cell astrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Myxopapillary ependymoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Cerebellar sarcoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Choroid plexus papilloma, no International Classification of Diseases for Oncology subtype | Is a | False | Glioma | Inferred relationship | Some |  | 
| Ependymoma, anaplastic | Is a | False | Glioma | Inferred relationship | Some |  | 
| Mixed glioma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Medullomyoblastoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Gliomatosis cerebri | Is a | False | Glioma | Inferred relationship | Some |  | 
| Oligodendroglioma, anaplastic | Is a | False | Glioma | Inferred relationship | Some |  | 
| Desmoplastic medulloblastoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Gliosarcoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Astrocytoma, no International Classification of Diseases for Oncology subtype | Is a | False | Glioma | Inferred relationship | Some |  | 
| Primitive neuroectodermal tumor | Is a | False | Glioma | Inferred relationship | Some |  | 
| Giant cell glioblastoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Subependymal glioma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Astroblastoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Protoplasmic astrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Astrocytoma, anaplastic | Is a | False | Glioma | Inferred relationship | Some |  | 
| Ependymoma, no International Classification of Diseases for Oncology subtype | Is a | False | Glioma | Inferred relationship | Some |  | 
| Glioblastoma, no International Classification of Diseases for Oncology subtype | Is a | False | Glioma | Inferred relationship | Some |  | 
| Fibrillary astrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Oligodendroglioma, no International Classification of Diseases for Oncology subtype | Is a | False | Glioma | Inferred relationship | Some |  | 
| Gemistocytic astrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Glioma, malignant (morphologic abnormality) | Is a | True | Glioma | Inferred relationship | Some |  | 
| Pleomorphic xanthoastrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Oligodendroblastoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Medulloblastoma, no International Classification of Diseases for Oncology subtype | Is a | False | Glioma | Inferred relationship | Some |  | 
| Choroid plexus carcinoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Malignant glioma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Anaplastic ependymoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Intracranial glioma | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Malignant glioma of brain | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Excision of nasal glioma (procedure) | Direct morphology | False | Glioma | Inferred relationship | Some |  | 
| Glioma, malignant (morphologic abnormality) | Is a | False | Glioma | Inferred relationship | Some |  | 
| Pilocytic astrocytoma | Is a | False | Glioma | Inferred relationship | Some |  | 
| Glioma of spinal cord | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| [M]Gliomas | Is a | False | Glioma | Inferred relationship | Some |  | 
| Excision of nasal glioma (procedure) | Procedure morphology (attribute) | False | Glioma | Inferred relationship | Some | 1 | 
| Malignant glioma - category | Is a | False | Glioma | Inferred relationship | Some |  | 
| Glioma of uncertain behaviour | Is a | False | Glioma | Inferred relationship | Some |  | 
| Excision of nasal glioma (procedure) | Direct morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Chiasmal glioma (disorder) | Associated morphology | False | Glioma | Inferred relationship | Some | 2 | 
| Optic glioma | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Intracranial optic nerve glioma (disorder) | Associated morphology | False | Glioma | Inferred relationship | Some | 2 | 
| Malignant glioma of brainstem (disorder) | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Anaplastic glioma of brain (disorder) | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Low grade glioma (morphologic abnormality) | Is a | True | Glioma | Inferred relationship | Some |  | 
| Excision of nasal glioma (procedure) | Direct morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Intracranial optic nerve glioma (disorder) | Associated morphology | False | Glioma | Inferred relationship | Some | 2 | 
| Chiasmal glioma (disorder) | Associated morphology | False | Glioma | Inferred relationship | Some | 2 | 
| Intracranial glioma | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Glioma of spinal cord | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Optic glioma | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Glioma | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Glioma of brainstem (disorder) | Associated morphology | False | Glioma | Inferred relationship | Some | 1 | 
| Glioma of brainstem (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Ependymoma - category | Is a | False | Glioma | Inferred relationship | Some |  | 
| Chiasmal glioma (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 3 | 
| Glioma of central nervous system (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Glial tumor of brain | Associated morphology | False | Glioma | Inferred relationship | Some | 2 | 
| Mixed glial tumour of brain | Associated morphology | False | Glioma | Inferred relationship | Some | 2 | 
| Optic nerve glioma of orbit (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 2 | 
| Ependymoma (morphologic abnormality) | Is a | True | Glioma | Inferred relationship | Some |  | 
| Optic nerve glioma | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Intraocular optic nerve glioma (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Intracranial optic nerve glioma (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Glioma of bilateral optic nerves (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Glioma of bilateral optic nerves (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 2 | 
| Glioma of right optic nerve (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Glioma of left optic nerve (disorder) | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Mixed glial tumour of brain | Associated morphology | True | Glioma | Inferred relationship | Some | 1 | 
| Glial tumor of brain | Associated morphology | True | Glioma | Inferred relationship | Some | 1 |