Galactose epimerase deficiency is a very rare, moderate to severe form of galactosemia characterized by moderate to severe signs of impaired galactose metabolism. The disease is MONDO_0009257 (galactose epimerase deficiency). Also known as: GALE deficiency, GALE-D, UDP-galactose-4-epimerase deficiency, epimerase deficiency galactosemia, galactosemia type 3, uridine diphosphate galactose-4-epimerase deficiency.