About The Medical Condition Type I Nonketotic Hyperglycinemia
Find the definition of the medical term Type I Nonketotic Hyperglycinemia. Type I Nonketotic Hyperglycinemia defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Type I Nonketotic Hyperglycinemia
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What's The Definition Of The Medical Condition Type I Nonketotic Hyperglycinemia?
An autosomal recessive metabolic disorder caused by deficiencies in the mitochondrial GLYCINE cleavage system; an enzyme system with four components: P-, T-, H-, and L-proteins. Deficiency of the P-protein is the most prevalent form. Neonatal and juvenile presentations have been reported. Neonatal onset is more common and may be fatal. Clinical features include SEIZURES; hypotonia; APNEA; and COMA. When the illness presents in childhood there tends to be an associated progressive DEMENTIA accompanied by extrapyramidal signs. (Menkes, Textbook of Child Neurology, 5th ed, p46; Jpn J Hum Genet 1997 Mar;42(1):13-22)
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