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:
NEURODEVELOPMENTAL DISORDER WITH INFANTILE EPILEPTIC SPASMS
This disease is characterized by onset of severe and frequent epileptic spasms within the first year of life. Affected individuals have global developmental delay with delayed walking and poor or absent speech.