1q gain is a frequent finding in preoperatively treated Wilms tumors, but of limited prognostic value for risk stratification in the SIOP2001/GPOH trial. Issue 11 (18th July 2014) - Vokuhl, Christian; Vogelgesang, Wiebke; Leuschner, Ivo; Furtwängler, Rhoikos; Graf, Norbert; Gessler, Manfred; Dörner, Evelyn; Pietsch, Torsten