SLC38A2 and hypertensive disorder: When FGR status and potential confounding variables (gestational age, maternal ethnicity and hypertensive disorder) were entered into a multiple linear regression model to predict placental SLC38A2 expression at term, the overall effect of FGR status remained significant (main effect: P<0.001; regression model: P<0.001, R2 = 0.769, degrees of freedom = 21).