Bartter Syndrome, Type 5, Antenatal, Transient, also known as bartter disease type 5, is related to polyhydramnios and bartter disease. An important gene associated with Bartter Syndrome, Type 5, Antenatal, Transient is MAGED2 (MAGE Family Member D2), and among its related pathways/superpathways are G alpha (s) signalling events and Development A2B receptor- action via G-protein alpha s. Affiliated tissues include kidney, and related phenotypes are hypokalemia and polyhydramnios