GALT and hyperinsulinemic hypoglycemia, familial, 4: More than 300 variants of the GALT gene are linked to CG and GALT deficiency, with the two most common pathogenic variants, c.563A>G, p.Q188R and c855G>T, p.K285N accounting for over 70% of CG‐causing variants in Caucasian populations internationally [20, 38].