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:
myopathy, lactic acidosis, and sideroblastic anemia 2
A myopathy, lactic acidosis, and sideroblastic anemia characterized by marked phenotypic variablity in time of onset and severity of symptoms that has_material_basis_in homozyous or compound heterozygous mutation in YARS2 on 12p11.21. (DO)