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.
An autosomal recessive neurodevelopmental ciliopathy characterized classically by a distinctive hindbrain malformation affecting the midbrain and cerebellum, recognizable as the 'molar tooth sign' on brain imaging. Caused by homozygous or compound heterozygous mutation in the TOGARAM1 gene on chromosome 14q21. (OMIM)