evoked by tactile or auditory stimuli, producing hypertonia and apnea episodes. Although
rare, this orphan disorder can have serious consequences, including sudden infant death.
Dominant and recessive mutations in the human glycine receptor (GlyR) α1 gene (GLRA1)
are the major cause of this disorder. However, recessive mutations in the presynaptic
Na+/Cl−-dependent glycine transporter GlyT2 gene (SLC6A5) are rapidly emerging as a …