Walker–Warburg syndrome (WWS), also called
Warburg syndrome,
Chemke syndrome,
HARD syndrome (Hydrocephalus, Agyria and Retinal Dysplasia),
Pagon syndrome,
cerebroocular dysgenesis (COD) or
cerebroocular dysplasia-muscular dystrophy syndrome (COD-MD), is a rare form of
autosomal recessive congenital muscular dystrophy. It is associated with brain (
lissencephaly,
hydrocephalus, cerebellar malformations) and
eye abnormalities. This condition has a worldwide distribution. The overall incidence is unknown but a survey in North-eastern Italy has reported an incidence rate of 1.2 per 100,000 live births. It is the most severe form of congenital muscular dystrophy with most children dying before the age of three years.