In the other study, plasma levels of the N-terminal pro-C-type natriuretic peptide (the longer half-life peptide precursor of the C-type natriuretic peptide) were evaluated and Prickett et al. found that plasma levels of the N-terminal pro-C-type natriuretic peptide were higher in patients with preeclampsia [10]. This evidence concerns the gene NPPC and preeclampsia.