Pairwise non-parametric correlation analyses were carried out to investigate the potential correlations between the expression levels of genes in sham and IUGR offspring at E20 and PN1, including between pairs of imprinted genes known to be important in kidney development and regulated by the KvDMR1 ICR (Cdkn1c, Kcnq1, and Kcnq1ot1; Figure 2 and Table S3), as well as between imprinted genes and other genes (Dnmt1a, Dnmt3a, Peg3, Snrpn, Slc22a18, and Cars; Fig. S1 and Table S3). Here, SNRPN is linked to fetal growth restriction.