- No evidence for mutations or altered expression of the Suppressor of Fused gene (SUFU) in primitive neuroectodermal tumours. Koch, A., Waha, A., Hartmann, W., Milde, U., Goodyer, C.G., Sörensen, N., Berthold, F., Digon-Söntgerath, B., Krätzschmar, J., Wiestler, O.D., Pietsch, T. Neuropathol. Appl. Neurobiol. (2004)