title: Fanconi-Bickel syndrome - mutation in SLC2A2 gene.
abstract: Fanconi-Bickel Syndrome (FBS) is a rare autosomal recessive disorder of carbohydrate metabolism. The defect in the GLUT 2 receptors in the hepatocytes, pancreas and renal tubules leads to symptoms secondary to glycogen storage, glucose metabolism and renal tubular dysfunction. Derangement in glucose metabolism is classical with fasting hypoglycemia and post-prandial hyperglycemia. The authors report a 4-year-old boy who presented with failure to thrive, motor delay, protuberant abdomen and was noted to have huge hepatomegaly with glycogen deposition in liver, and renal tubular acidosis. Gene sequencing revealed homozygous mutation, c.1330T > C in SLC2A2 gene, thus confirming the diagnosis of FBS. Only three mutations have been reported from India so far. The primary reason for referral to authors' hospital was for liver transplantation, but an accurate diagnosis led to avoidance of the major surgery and streamlining of treatment with clinical benefit to the child and family.
authors.affiliation: Division of Pediatric Gastroenterology and Hepatology, Sir Ganga Ram Hospital, Rajendra Nagar, New Delhi, India.
authors.forename: Mohit
authors.initials: M
authors.lastname: Kehar
authors.forename: Sunita
authors.initials: S
authors.lastname: Bijarnia
authors.forename: Sian
authors.initials: S
authors.lastname: Ellard
authors.forename: Jayne
authors.initials: J
authors.lastname: Houghton
authors.forename: Renu
authors.initials: R
authors.lastname: Saxena
authors.forename: I C
authors.initials: IC
authors.lastname: Verma
authors.forename: Nishant
authors.initials: N
authors.lastname: Wadhwa
mesh_terms: D002675:Child, Preschool; D003241:Consanguinity; D003937:Diagnosis, Differential; D005198:Fanconi Syndrome / Q000175:diagnosis* / Q000178:diet therapy / Q000235:genetics*; D051273:Glucose Transporter Type 2 / Q000235:genetics*; D006801:Humans; D008297:Male
chemical_list: D051273:Glucose Transporter Type 2; C495680:SLC2A2 protein, human