A brain disorder caused by biallelic variants in NDE1 that is characterized by extreme microcephaly (typically head circumference of more than 10 standard deviations (SD) below the mean), profound motor and intellectual disability, spasticity, and incomplete cerebral formation. Radiologic studies demonstrate overt microcephaly with cortical dysgenesis ranging from simplification to pachygyria/lissencephaly to hydranencephaly. Agenesis of the corpus callosum as well as hypoplasia of the brainstem and cerebellum are typically present.
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microcephalic osteodysplastic primordial dwarfism
MONDO:0000060
microcephaly and chorioretinopathy
MONDO:0000181
microcephaly with or without chorioretinopathy, lymphedema, or intellectual disability
MONDO:0007918
autosomal dominant primary microcephaly
MONDO:0007988
Prader-Willi syndrome
MONDO:0008300
Smith-Magenis syndrome
MONDO:0008434