| Namespace | disease_ontology | Obsolete | false |
| description | A pontocerebellar hypoplasia characterized by global developmental delay, impaired intellectual development with absent speech, microcephaly, and progressive atrophy of the cerebellar vermis and brainstem that has_material_basis_in homozygous or compound heterozygous mutation in the VPS51 gene on chromosome 11q13.1. |
