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:
ONYCHODYSTROPHY, OSTEODYSTROPHY, IMPAIRED INTELLECTUAL DEVELOPMENT, AND SEIZURES SYNDROME
This disease is an autosomal recessive syndromic developmental disorder characterized by global developmental delay with impaired intellectual development, dysmorphic facial features, and hypoplastic terminal phalanges and nails. Patients have seizures or tonic posturing. The disorder is associated with a defect in GPI anchoring of membrane-bound proteins.