| Namespace | disease_ontology | Obsolete | false |
| description | A multiple mitochondrial dysfunctions syndrome that is characterized by progressive neurologic deterioration beginning in early infancy, with affected individuals having no psychomotor development and early-onset seizures with neurologic decline and spasticity, and has_material_basis_in autosomal recessive inheritance of homozygous mutation in the iron-sulfur cluster assembly 1 gene on chromosome 9q21. |