Bartter Syndrome, Type 2, Antenatal, also known as bartter disease type 2, is related to nephrocalcinosis and nephrolithiasis, and has symptoms including constipation, diarrhea and fever. An important gene associated with Bartter Syndrome, Type 2, Antenatal is KCNJ1 (Potassium Inwardly Rectifying Channel Subfamily J Member 1), and among its related pathways/superpathways are Transport of inorganic cations/anions and amino acids/oligopeptides and Dopamine-DARPP32 Feedback onto cAMP Pathway. Affiliated tissues include kidney and heart, and related phenotypes are hypomagnesemia and hypokalemia