- Novel molecular variants of the Na-K-2Cl cotransporter gene are responsible for antenatal Bartter syndrome. Vargas-Poussou, R., Feldmann, D., Vollmer, M., Konrad, M., Kelly, L., van den Heuvel, L.P., Tebourbi, L., Brandis, M., Karolyi, L., Hebert, S.C., Lemmink, H.H., Deschênes, G., Hildebrandt, F., Seyberth, H.W., Guay-Woodford, L.M., Knoers, N.V., Antignac, C. Am. J. Hum. Genet. (1998)