GADD45B and fetal growth restriction: Genes such as Fam134b, Upp2, Aspa, Gadd45b, and Prkaa2 were significantly upregulated and Paqr9, Fam82a1, Ifi47, Paqr7, G0s2, and Cyp4a1 were markedly suppressed in IUGR, relative to AGA.