Interestingly, CYP19A1 gene expression was increased in female [0.30 ± 0.10] compared to male [0.14 ± 0.05] fetuses in the Abnormal PI IUGR subgroup (p = 0.03; Figure 3); no significant differences were found within the other subgroups. Here, CYP19A1 is linked to fetal growth restriction.