PF4 and fetal growth restriction: The network of the PE + IUGR gene set included 9 hub genes, namely, PTGS2, FGF7, FGF10, IL10, SPP1, MPO, THBS1, CYBB and PF4, related to fibroblast growth factors, inflammation, chemotaxis and phagocytosis (Awamleh et al., 2019).