STOX2 and fetal growth restriction: In our previous study [29], we compared the expression levels of STOX1 and STOX2 in decidual tissue from pregnancies with pre-eclampsia and/or fetal growth restriction (FGR), and found that STOX1 did not show differential gene expression between any of the groups, while the expression of STOX2 in the decidua of pregnancies with preeclampsia and FGR was significantly lower than that in the control group.