Alternative titles and symbols : Gk deficiency; Gk1 deficiency; HYPERGLYCEROLEMIA;
Description : Francke et al. (1987) noted that there are 3 clinically distinct forms of glycerol
kinase deficiency: infantile, juvenile, and adult. The infantile form is associated
with severe developmental delay, and those with the adult form have no symptoms and
are often detected fortuitously. The infantile form of GK deficiency, or the 'GK complex,'
results from the Xp21 contiguous gene deletion syndrome (300679) with congenital adrenal
hypoplasia (300200) and/or Duchenne muscular dystrophy (DMD; 310200), whereas the
juvenile and adult forms have isolated GK deficiency (Walker et al., 1996).;
Inheritance : X-linked recessive;
Molecular basis : Caused by mutation in the glycerol kinase gene (GK, 300474);