- Discordant KCNQ1OT1 imprinting in sets of monozygotic twins discordant for Beckwith-Wiedemann syndrome. Weksberg, R., Shuman, C., Caluseriu, O., Smith, A.C., Fei, Y.L., Nishikawa, J., Stockley, T.L., Best, L., Chitayat, D., Olney, A., Ives, E., Schneider, A., Bestor, T.H., Li, M., Sadowski, P., Squire, J. Hum. Mol. Genet. (2002)