Thus, KCNQ1 encodes the Kv7.1 channel giving rise to the slow‐delayed rectifier K+ current IKs,4, 5 which along with the rapid delayed rectifier K+ current IKr (Kv11.1 protein channel; KCNH2 gene also known as hERG1 gene) control the duration of the repolarization phase of the cardiac AP.4, 5, 6, 7. The gene discussed is KCNH2; the disease is alkaline phosphatase measurement.