label: Alpha-Methylacetoacetic Aciduria
label_lc: alpha-methylacetoacetic aciduria
description: A rare autosomal recessive inherited disorder caused by mutations in the ACAT1 gene. It is characterized by the reduction or elimination of the enzyme mitochondrial acetoacetyl-CoA thiolase which is responsible for the metabolism of the amino acid isoleucine and ketone-body metabolism. Signs and symptoms appear early in life and include vomiting, dehydration, breathing difficulties, seizures, lethargy, and coma.