Mondo Description Acyl-CoA dehydrogenase 9 (ACAD9) deficiency is a rare disorder leading to a deficiency of complex I of the respiratory chain and is characterized by neurological dysfunction, hepatic failure and cardiomyopathy.

Uniprot Description An autosomal recessive metabolic disorder associated with mitochondrial complex I deficiency, resulting in multisystemic and variable manifestations. Clinical features include infantile onset of acute metabolic acidosis, Reye-like episodes (brain edema and vomiting that may rapidly progress to seizures, coma and death), exercise intolerance, hypertrophic cardiomyopathy, liver failure, muscle weakness, and neurologic dysfunction.