Term Name
DK1-congenital disorder of glycosylation
External Reference
Synonyms
DK1-congenital disorder of glycosylation, congenital disorder of glycosylation type Im, CDG syndrome type Im, dolichol kinase deficiency, CDG-Im, congenital disorder of glycosylation type 1m, carbohydrate deficient glycoprotein syndrome type Im, CDG1M, DK1-CDG, hypotonia and ichthyosis due to dolichol phosphate deficiency
Definition
DK1-CDG is characterized by muscular hypotonia and ichthyosis. It has been described in four children from two consanguineous families. All the affected children died during early infancy, two from dilated cardiomyopathy. The syndrome is caused by a deficiency in dolichol kinase 1 (DK1), an enzyme involved in the de novo biosynthesis of dolichol phosphate. The mutations identified in the DK1 gene led to a 96 to 98% reduction in DK activity.