Mutations in the ETHE1 gene cause<unk> . The ETHE1 gene makes an enzyme that plays an important role in energy production. It is active in mitochondria, which are the energy-producing centers within cells. Little is known about its exact function, however. Mutations in the ETHE1 gene lead to the production of a defective version of the enzyme or prevents the enzyme from being made. A lack of the ETHE1 enzyme impairs the ability to make energy in mitochondria. Additionally, a loss of this enzyme allows potentially toxic compounds, including<unk>  acid and lactic acid, to build up in the body. Excess amounts of these compounds can be detected in urine. It remains unclear how a loss of the ETHE1 enzyme leads to progressive brain dysfunction and the other features of<unk> .<unk>  is an autosomal recessive disorder, which means the defective gene is located on an autosome, and both parents must carry one copy of the defective gene in order to have a child born with the disorder. The parents of a child with an autosomal recessive disorder are usually not affected by the disorder.
Ethylmalonic encephalopathy
Glycine encephalopathy
Toxic encephalopathy
Wernicke encephalopathy
Early myoclonic encephalopathy
Autoimmune encephalitis
Powassan encephalitis
Viral encephalitis