Not surprisingly, Glut1 expression in the brain was increased by over 60% in IUGR fetal lambs and rats as well as in IUGR-born neonatal rats (Sadiq et al., 1999; Limesand et al., 2007), which is consistent with brain sparing during chronic hypoglycemia (Gibbs and Yates, 2021). The gene discussed is SLC2A1; the disease is fetal growth restriction.