<unk>  is a rare inborn error of metabolism. To date only 21 cases have been described.
Aminoacylase 1 deficiency
2,4 Dienoyl-CoA reductase deficiency
Malonyl-CoA decarboxylase deficiency
Carbamoyl phosphate synthetase I deficiency
3-Methylcrotonyl-CoA carboxylase deficiency
Pyruvate kinase deficiency
Guanidinoacetate methyltransferase deficiency
Holocarboxylase synthetase deficiency