Any neurodevelopmental disorder in which the cause of the disease is a monoallelic gain-of-function variation in the PIP5K1C gene leading to increased levels of phosphatidylinositol 4,5 bisphosphate. This disorder is characterized by intellectual disability, motor and speech delay, microcephaly, seizures, visual and ocular abnormalities, and craniofacial dysmorphic features.
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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
microcephalic osteodysplastic primordial dwarfism type I
MONDO:0008871