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 skin disease characterized by the presence at birth of a pigmented skin lesion composed of melanocytes of more than 20 cm in projected adult diameter that has_material_basis_in somatic mutation in the NRAS gene on chromosome 11p15.5. (DO)
CTD Direct Evidence: marker/mechanism ClinVar Annotator: match by term: Congenital giant melanocytic nevus | ClinVar Annotator: match by term: Large congenital melanocytic nevus
ClinVar Annotator: match by term: Congenital giant melanocytic nevus | ClinVar Annotator: match by term: Large congenital melanocytic nevus | ClinVar Annotator: match by term: MELANOCYTIC NEVUS SYNDROME, CONGENITAL, SOMATIC
CTD Direct Evidence: marker/mechanism ClinVar Annotator: match by term: Congenital giant melanocytic nevus | ClinVar Annotator: match by term: Large congenital melanocytic nevus