NCIt definition : Human GCK wild-type allele is located in the vicinity of 7p13 and is approximately
55 kb in length. This allele, which encodes hexokinase-4 protein, is involved in the
synthesis of hexose-6-phosphates, which are utilized in glycogen synthesis and glycolysis.
Mutations in the gene are associated with permanent neonatal diabetes mellitus 1,
maturity-onset diabetes of the young 2, familial hyperinsulinemic hypoglycemia 3 and
late-onset noninsulin-dependent diabetes mellitus.;