KIAA1109-related early lethal congenital brain malformations-arthrogryposis syndrome

What it is

A rare multiple congenital anomalies/dysmorphic syndrome characterized by severe brain malformations associated with cerebral parenchymal underdevelopment, arthrogryposis and club feet due to mutations in KIAA1109 gene. Majority of the cases are early lethal. Milder cases may present with severe global developmental delay, intellectual disability, microcephaly, hydrocephaly, heart defects, renal problems, severe muscle hypotonia causing incapacity to stand without a support,epilepsy, syndactlyly and variable dysmorphic facial features (including hypotelorism, hypertelorism, small eyes, low-set and posteriorly rotated ears, short nose, flattened nasal bridge, anteverted nares, retrognathia).

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Antenatal, Neonatal

Inheritance

Autosomal recessive

Classified as

Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Gene

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references