- Functional and clinical characterization of KCNJ2 mutations associated with LQT7 (Andersen syndrome). Tristani-Firouzi, M., Jensen, J.L., Donaldson, M.R., Sansone, V., Meola, G., Hahn, A., Bendahhou, S., Kwiecinski, H., Fidzianska, A., Plaster, N., Fu, Y.H., Ptacek, L.J., Tawil, R. J. Clin. Invest. (2002)