Ehlers-Danlos syndrome, classic type, 1 (MONDO_0019567, a Monarch Disease Ontology id) is any Ehlers-Danlos syndrome in which the cause of the disease is a mutation in the COL5A1 gene. Also known as: EDS I, EDSCL1, Ehlers-Danlos syndrome, type 1, Ehlers-Danlos syndrome, type I, type I Ehlers-Danlos syndrome.