CTCF and fetal growth restriction: The CTCF sites associated with the long-range enhancer 3 are unmethylated in all control samples and we failed to detect any methylation changes with the IUGR profiles being within the control methylation ranges (mean methylation 7.75% ± 0.23% in controls and 7.83% ± 0.26% in IUGR, Student’s t p = 0.81).