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 lymphatic system disease that is characterized by dysfunction of the thoracic duct or cisterna chyli, leading to a retrograde flux of lymphatic fluid or abnormal drainage of lymphatic fluid and that has_material_basis_in heterozygous mutation in the EPHB4 gene on chromosome 7q22. (DO)
ClinVar Annotator: match by term: Hydrops fetalis, nonimmune, and/or atrial septal defect, susceptibility to | ClinVar Annotator: match by term: Lymphatic malformation 7 CTD Direct Evidence: marker/mechanism