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 nonsyndromic congenital nail disorder that is characterized by nails with longi- tudinal streaks, thinning of the nail plate, poorly developed or absent lunulae, along with variously disturbed formation of the nail plate leading to increased vulnerability of the free nail margins. (DO)
Synonyms:
exact_synonym:
NDNC7; Nail Dysplasia, Isolated Congenital; Onychodysplasia, Isolated Congenital