| Namespace | disease_ontology | Obsolete | false |
| description | A visceral heterotaxy that is characterized by complex congenital heart malformations and/or situs inversus and caused by defects in the normal left-right asymmetric positioning of internal organs and that has_material_basis_in homozygous or compound heterozygous mutation in the MMP21 gene on chromosome 10q26. |
