We observed a statistically significant difference only for the expression of the LXRB protein in the placenta from the study and control groups (median (IQR): 1.270 ng/mL (0.975–1.350) in late-onset preeclampsia vs. 2.020 ng/mL (1.320–2.450) in 29 controls, p = 0.0027). This evidence concerns the gene NR1H2 and preeclampsia.