There was a significant increase in the CST6/LGMN ratio in patients who went on to develop preeclampsia (23.19 [IQR, 4.31–59.34], P = 0.0003), compared to those delivering at term without preeclampsia (12.09 [IQR, 3.50–72.87]). Here, CST6 is linked to preeclampsia.