KCNQ1 and fetal growth restriction: Interestingly, when sham and IUGR were investigated individually at each time point, the negative correlation between Kcnq1ot1 and Kcnq1 was significant only in the E20 IUGR group (Spearman’s ρ = −0.583, p = 0.014, Figure 2c–f, S1c-f and Table S3).