<unk>  is a rare genetic disorder caused by mutations in the DDC gene, which encodes an enzyme called<unk>  L-amino<unk><unk> .
Aromatic L-amino acid decarboxylase deficiency
Arginine:glycine amidinotransferase deficiency
D-bifunctional protein deficiency
Beta-ketothiolase deficiency
Ornithine aminotransferase deficiency
Aldolase A deficiency
Short-chain acyl-coenzyme A dehydrogenase deficiency
Aminoacylase 1 deficiency