Catalog

Mannosyltransferase 6 deficiency

No MMS code

Link to WHO Definition

Mannosyltransferase 6 deficiency – http://id.who.int/icd/entity/1699521762

The CDG (Congenital Disorders of Glycosylation) syndromes are a group of autosomal recessive disorders affecting glycoprotein synthesis. CDG syndrome type Id is characterised by severe psychomotor delay, seizures, hypotonia, facial dysmorphism, microcephaly and ocular anomalies. It has been described in five children. The syndrome is caused by mutations in the ALG3 gene (localised to the q27 region of chromosome 3) leading to a deficiency of one of the endoplasmic reticulum mannosyltransferases (dolichyl-P-Man:Man(5)GlcNAc(2)-PP-dolichyl mannosyltransferase).