In this subgroup, we found no correlation between the decidual and placental expression intensity, neither in preeclampsia with (n = 5, NLRP3 R = −0.329, P = 0.588; IL-1β R = −0.579, P = 0.306) or without FGR (n = 10, NLRP3 R = 0.096, P = 0.791; IL-1β R = −0.251, P = 0.484), nor in normal pregnancies (n = 6, NLRP3 R = −0.718, P = 0.108; IL-1β R = −0.059, P = 0.912). This evidence concerns the gene IL1B and preeclampsia.