SLC2A2 and Hyperglycemia: Meanwhile, Fanconi–Bickel syndrome is a rare autosomal recessive disorder characterized by nonfunctional GLUT2 mutation, hepato-renal glycogen accumulation, both fasting hypoglycemia as well as postprandial hyperglycemia, and hypergalactosemia indicating an impaired utilization of these two monosaccharides, and proximal renal tubular dysfunction [6, 7].