In reality, the expression of the enzyme is high in leukocytes and other immune cells [34], and, recently, G6PD deficiency has been found to be involved in several disorders beyond blood diseases, including sepsis [35], neonatal hyperbilirubinemia [36], and cardiovascular disease [37], especially in the elderly [38]. The gene discussed is G6PD; the disease is hyperinsulinemic hypoglycemia, familial, 4.