- Duplications and copy number variants of 8p23.1 are cytogenetically indistinguishable but distinct at the molecular level. Barber, J.C., Maloney, V., Hollox, E.J., Stuke-Sontheimer, A., du Bois, G., Daumiller, E., Klein-Vogler, U., Dufke, A., Armour, J.A., Liehr, T. Eur. J. Hum. Genet. (2005)