KCNQ1 and Iron deficiency anemia: “Interestingly, these findings could be clinically relevant, as it was recently reported that impaired function of KCNQ1 in Jervell and Lange-Nielsen syndrome results in iron-deficient anemia and gastric hyperplasia [15].” The cited number 15 reference is wrongly listed as Grove et al 2010 and should instead be Iron-deficiency anaemia, gastric hyperplasia, and elevated gastrin levels due to potassium channel dysfunction in the Jervell and Lange-Nielsen Syndrome.