NCIt definition : An autosomal recessive condition caused by mutation(s) in the PIGN gene, encoding
GPI ethanolamine phosphate transferase 1. Though the phenotype is variable, it may
be characterized by neonatal hypotonia, lack of psychomotor development, seizures,
dysmorphic features, and variable congenital anomalies involving the cardiac, urinary,
and gastrointestinal systems.;