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 Noonan syndrome characterized by developmental delay, variably impaired intellectual development, reduced postnatal growth, and craniofacial anomalies that has_material_basis_in heterozygous mutation in the MAPK1 gene on chromosome 22q11.22, where the mutation enhances phosphorylation of the kinase. (DO)