Angiogenic Factors, Biomarker, Biomarkers, Early-Onset, Early-Onset Preeclampsia, Fetal, Growth Restriction, Late-Onset Preeclampsia, Normal-Pregnancy, Plgf, Serum, Severe, Preeclampsia, Soluble Endoglin, Tyrosine Kinase-1. The gene discussed is PGF; the disease is preeclampsia.