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 primary immunologic disorder characterized by recurrent sinopulmonary infections from childhood associated with low levels of B cells and impaired early B-cell development. Caused by heterozygous mutation in the IKZF3 gene on chromosome 17q12-q21. (OMIM)