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 HYPOTONIA, BRAIN ANOMALIES, DISTINCTIVE FACIES, AND ABSENT LANGUAGE
This disease is characterized by hypotonia, global developmental delay, severely impaired intellectual development with poor or absent speech, delayed walking or inability to walk, feeding difficulties with poor overall growth, dysmorphic facial features, and brain anomalies, including ventriculomegaly and progressive white matter loss.