FOXO1 and preeclampsia: The threshold value for maternal serum FoxO1 in predicting preeclampsia < 3.64 ng/mL, and the area under the curve (AUC) was 0.951 (95% confidence interval (CI) 0.82–0.93, 0.875, p > 0.001 with 78.8% sensitivity and 76.5% specificity).