ISSN:
17560500
Journal Name:
BMC Research Notes
Volume:
9
Issue:
387
Pages From:
1
To:
5
Date:
Thursday, August 4, 2016
Keywords:
FBS, Hepatomegaly, Rickets, Short stature, Hypoglycemia
Abstract:
Background: Fanconi-Bickel syndrome (FBS, OMIM 227810) is a rare autosomal recessive disease caused by a deficiency of glucose transporter 2 (GLUT2), a member of the facilitative glucose transporter family (Santer et al. J Inherit
Metab Dis 21:191–194, 1998). The typical clinical picture is characterized by hepatorenal glycogen accumulation
resulting in hepato- and nephromegaly, impaired utilization of glucose and galactose, proximal renal tubular dysfunction, rickets and severe short stature. Case presentation: We report 2 Palestinian patients from 2 families who were homozygous for the mutation p.R301X (C>T) in exon 7of GLUT2 gene. Patient 1 showed clinical and laboratory improvement with age characterized by normal growth and resolution of rickets. Patient 2 had severe phenotype characterized by progressive weight loss, persistent metabolic acidosis, marked polyuria and clinical and laboratory findings of rickets progressing to death at
age 10 months.
Conclusion: This report further expands the clinical spectrum of FBS even with identical mutations. Other yet
unknown genetic, environmental or stochastic factors may be responsible for phenotypic variability