RARRES2 and preeclampsia: They also confirm the positive association between serum chemerin and the sFlt-1/PlGF ratio,10 a biomarker currently used to predict preeclampsia.42 However, despite this correlation, chemerin per se displayed additive predictor effects on top of the sFlt-1/PlGF ratio, suggesting that its effects are not necessarily fully identical to those of the sFlt-1/PlGF pathway.