RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
A hypomyelinating leukodystrophy characterized by severe psychomotor delay, predominantly involving motor and expressive language development, cerebral and cerebellar atrophy, and corpus callosum hypoplasia that has_material_basis_in homozygous mutation in the SLC35B2 gene on chromosome 6p21. (DO)
Synonyms:
exact_synonym:
Chondrodysplasia with hypomyelinating leukodystrophy; HLD26; Hypomyelinating leukodystrophy 26 with chondrodysplasia