label: 3-methylcrotonyl-CoA carboxylase deficiency
label_lc: 3-methylcrotonyl-coa carboxylase deficiency
description: "3-methylcrotonyl-CoA carboxylase deficiency (3-MCCD) is an inherited disorder of leucine metabolism characterized by a highly variable clinical picture ranging from metabolic crisis in infancy to asymptomatic adults."