A significant positive correlation between the decidual expression intensity of NLRP3 and IL-1β was observed in normal pregnancies (R = 0.516, P = 0.01) and pregnancies complicated with preeclampsia without FGR (R = 0.499, P = 0.05), but not in preeclamptic pregnancies with FGR (R = 0.323, P = 0.116). Here, IL1B is linked to preeclampsia.