Preeclampsia, fetal complications, and maternal complications can be predicted based on a model involving traditional parameters (gestational age, parity, proteinuria, and mean arterial blood pressure).24 Adding the sFlt-1/PlGF ratio to this traditional model improved the predictive value (C-index) for all outcomes, and the same was true for serum chemerin, while the highest predictive values were obtained when adding both the ratio and serum chemerin (Figure 1D). Here, RARRES2 is linked to preeclampsia.