Glutaric aciduria type II: treatment with riboflavine, carnitine and insulin

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Abstract
A boy, now 22 months old, is described who presented at the age of 6 weeks with hypoglycaemic coma. The excretion pattern of organic acids in the urine was consistent with glutaric aciduria type II (GA II). A high energy diet low in fat and protein was given. Treatment with riboflavine resulted in an improvement of the metabolite profile, and the patient gained weight. However, a tendency to hypoglycaemia and severe hypotonia persisted. Due to muscle weakness, aggravated by infections, artificial ventilation was necessary during three periods. Serum carnitine level was low. Treatment with carnitine, started during the third period of artificial ventilation, led to some improvement of muscle strength, but he still could not breathe without support. Treatment with insulin, combined with further enrichment of the diet with glucose, resulted in an increase in muscular strength and in weight gain. Thirteen families with GA II have been described upto now. This is the first patient with a severe form of the disorder wo has survived the 1st year of life. Treatment and metabolic studies are presented.

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