ETFDH and multiple acyl-CoA dehydrogenase deficiency: Mutations in the gene (electron transfer flavoprotein dehydrogenase (ETFDH)) coding for this protein are responsible for multiple acyl‐CoA dehydrogenase deficiency (MADD), also known as glutaric acidemia type II (GAII) (OMIM#231680), a recessive autosomal metabolic disorder.