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.
Term:
spinal muscular atrophy with lower extremity predominant 2B
A spinal muscular atrophy with lower extremity predominance that is characterized by decreased fetal movements and are congenital contractures consistent with arthrogryposis multiplex congenita and that has_material_basis_in heterozygous mutation in the BICD2 gene on chromosome 9q22. (DO)