KCNQ1OT1 and fetal growth restriction: As Dnmt3a was reported in our previous study to be decreased in IUGR kidneys at E20 [12], we hypothesized that there were alterations in the DNA methylation profile, including that of the KvDMR1 ICR, which is involved in dysregulation of the expression of imprinted genes that are known to be important in foetal kidney development.