Importantly, patients with inflammatory anaemia with or without true iron deficiency are characterized by reduced serum iron and a low transferrin saturation (TfS) (i.e., the quotient of iron concentration (μmol/L) divided by transferrin concentration (mg/dL) in fasting blood samples multiplied by 70.9 and stated as a percentage) [68]. The gene discussed is TF; the disease is Iron deficiency anemia.