Gut Liver.  2012 Jan;6(1):126-128.

A Novel Frameshift Mutation of the ALDOB Gene in a Korean Girl Presenting with Recurrent Hepatitis Diagnosed as Hereditary Fructose Intolerance

Affiliations
  • 1Department of Pediatrics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. kmkim@amc.seoul.kr
  • 2Medical Genetics Clinic and Laboratory, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Abstract

Hereditary fructose intolerance is an autosomal recessive disorder that is caused by a deficiency in fructose-1-phosphate aldolase (Aldolase B). Children can present with hypoglycemia, jaundice, elevated liver enzymes and hepatomegaly after intake of dietary fructose. Long-term intake of fructose in undiagnosed patients can result in hepatic failure or renal failure. We experienced a case of hereditary fructose intolerance presenting as recurrent hepatitis-like episodes. Detailed evaluation of her dietary habits revealed her avoidance of sweetened foods and fruits. Genetic analysis of ALDOB revealed that she is a homozygote for a novel frameshifting mutation c[758_759insT]+[758_759insT] (p.[val25 3fsX24]+[val253fsX24]). This report is the first of a Korean patient diagnosed with hereditary fructose intolerance using only molecular testing without undergoing intravenous fructose tolerance test or enzyme assay.

Keyword

Fructose intolerance; Aldolase B; Hepatitis; Hypoglycemia; Gene

MeSH Terms

Child
Enzyme Assays
Food Habits
Frameshift Mutation
Fructose
Fructose Intolerance
Fructose-Bisphosphate Aldolase
Fructosephosphates
Fruit
Hepatitis
Hepatomegaly
Homozygote
Humans
Hypoglycemia
Jaundice
Liver
Liver Failure
Renal Insufficiency
Fructose
Fructose-Bisphosphate Aldolase
Fructosephosphates
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