<unk>  is thought to be relatively benign. Although aggressive behavior and mental retardation have been reported with the disorder, no definitive neurometabolic connection has yet been established.
Urocanic aciduria
Hawkinsinuria
Orotic aciduria
Alpha-aminoadipic and alpha-ketoadipic aciduria
Cystathioninuria
Alkaptonuria
Saccharopinuria
Homocystinuria