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 condition in which the UTERUS is found tilted backward toward the spine. The uterus is more commonly found in a straight vertical or anteverted (tipped forward) position. Although retroverted uterus is a normal variant position without symptoms, it is sometimes associated with pain, discomfort and other pregnancy complications.