| Primary DisordersAromatic amino acid hydroxylase (AADC) Vesiculat monoamine transporter 3 (VMAT2) | Secondary disorders with hyperphenylalaninemiaGTP cyclohydrolase I [autosomal recessive] (arGTPCH) deficiency 6-Pyruvoly-tetrahydropterin synthase (PTPS) deficiency Dihydropteridine reductase (DHPR) deficiency 
 Without HyperphenylalaninemiaGTP cyclohydrolase I [autosomal dominat] (adGTPCH) deficiency Sepiapterin reductase (SR) deficiency 
 Others |