IGF1 and fetal growth restriction: Work in our laboratory demonstrated that over‐expression of human Insulin‐like Growth Factor‐1 (HuIGF‐1) following intra‐placental injection of adenoviral human IGF‐1 (Ad‐HuIGF‐1) in the placenta corrects fetal weight deficits in animal models of IUGR (Keswani et al. 2004; Chung et al. September 2010) and increases placental cross‐sectional area (Katz et al. 2009).