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Nonketotic hyperglycinemia is an extremely rare congenital metabolic disorder, which is caused by
the lack of a glycine cleavage system. The onset of hyperglycinemic symptom is during the neonatal
or early infant period. Progressing grave neuromotor dysfunction is one of the main symptoms.
They include myoclonic seizure, hiccup, apnea, decreased deep tendon reflex, lethargy and
coma. The prognosis is mostly very poor. Furthermore, there... |
