CYP19A1 and fetal growth restriction: Specifically, post-hoc test showed that CYP19A1 levels were significantly increased in the most severe IUGR cases compared to both Normal PI IUGR and Controls (p = 0.02; Figure 2A) [Abnormal PI IUGR: 0.22 ± 0.11; Normal PI IUGR: 0.12 ± 0.06; Controls: 0.11 ± 0.08].