NDE1-related microhydranencephaly

What it is

NDE1-related microhydranencephaly is a rare, hereditary syndrome with a central nervous system malformation as major feature characterized by extreme microcephaly and growth restriction, severe motor delay and mental retardation, and typical radiological findings of gross dilation of the ventricles resulting from the absence (or severe delay in the development) of cerebral hemispheres, hypoplasia of the corpus callosum, cerebellum, and brainstem. Associated features are thin bones and scalp rugae.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Antenatal, Neonatal

Inheritance

Autosomal recessive

Classified as

Malformation syndrome

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.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references