This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Fructose-1,6-bisphosphatase deficiency is an inherited metabolic disorder in which the body cannot properly make glucose. Glucose is the main type of sugar in the blood and a primary source of energy for the body’s cells. Without treatment, affected people can experience hypoglycemia and metabolic acidosis on fasting, episodes of hyperventilation, suspension of breathing (apnea), and elevated levels of ketones in their blood (ketosis).
Fructose-1,6-bisphosphatase deficiency is inherited in an autosomal recessive manner. Inherited mutations in the FBP1 gene cause a deficiency of the enzyme fructose-1,6-bisphosphatase. This deficiency, in turn, results in impaired production of glucose.
This disorder can be treated by complete avoidance of fructose and its related sugars, as well as by avoiding prolonged periods of fasting. Typically, having of small amounts of fructose and related sugars may be tolerated in most patients with fructose-1,6-bisphosphatase deficiency. No other specific medical therapy is generally required.
For more information, visit GARD.