Alternative titles and symbols : Cerebral palsy, spastic quadriplegic, 3; CPSQ3;
Description : Spastic paraplegia-50 is an autosomal recessive neurodevelopmental disorder characterized
by neonatal hypotonia that progresses to hypertonia and spasticity and severe mental
retardation with poor or absent speech development (summary by Verkerk et al., 2009).;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the adaptor-related protein complex 4, MU-1 subunit gene (AP4M1,
602296.0001);