| Namespace | disease_ontology | Obsolete | false |
| description | A neuronal ceroid lipofuscinosis that is characterized by variable age of onset of symptoms (progressive dementia, seizures, and progressive visual failure) and lipopigment pattern of granular osmiophilic deposits, and has_material_basis_in homozygous or compound heterozygous mutation in the PPT1 gene on chromosome 1p34. |
