2012; Cornelius and LaMarca 2014) the mechanism behind this has not been fully determined. From our previous studies, we have identified that the effects are due in part to increased ROS production (Cornelius and LaMarca 2014), but here we show that direct stimulation of NK proliferation and activation present another arm of the role of IL‐17 in preeclampsia. This evidence concerns the gene IL17A and preeclampsia.