COACH syndrome

A very rare subtype of Joubert syndrome with the neurological features of Joubert Syndrome and congenital hepatic fibrosis. Prevalence is unknown. The age of onset and severity of hepatic manifestations are variable. Some patients may also present chorioretinal or optic nerve colobomas and nephronophthisis but these are not mandatory features. Over 70% of cases are due to mutations in the TMEM67 gene (8q22.1).

SNOMEDCT_US