| Namespace | disease_ontology | Obsolete | false |
| description | A methylmalonic acidemia that is characterized by the accumulation of cobalamin in lysosomes which is then unable to synthesize the cofactors adenosylcobalamin (AdoCbl) and methylcobalamin (MeCbl) and that has_material_basis_in homozygous or compound heterozygous mutation in the LMBRD1 gene on chromosome 6q13. |