Dpm1-Cdg

The CDG (Congenital Disorders of Glycosylation) syndromes are a group of autosomal recessive disorders affecting glycoprotein synthesis. CDG syndrome type Ie is characterised by psychomotor delay, seizures, hypotonia, facial dysmorphism and microcephaly. Ocular anomalies are also very common.

Epidemiology

The syndrome has been described in seven children.

Etiology

It is caused by mutations in the DPM gene (localised to the q13.13 region of chromosome 20) leading to a deficiency in the endoplasmic reticulum enzyme dolichol-P-mannose synthase 1.