It has been suggested that newborns with IUGR have down-regulated taurine transport systems.6 Taurine is essential for fetal development and pancreatic β-cell development, and it can reduce brain cell apoptosis, activate protein kinase signaling pathways to increase neurotrophic factors, and promote brain development in the setting of IUGR.25,26 Taurine metabolism is related to alanine, methionine, and cysteine metabolism. This evidence concerns the gene WEE1 and fetal growth restriction.