Volasertib in vivo objective response activity for solid tumor and brain tumor models. Rh30R (rhabdomyosarcoma), GBM2 (glioblastoma), and neuroblastoma lines (NB-EBc1 and NB-1691): Kaplan-Meier curves for EFS (left), median relative tumor volume graphs (center), and individual tumor volume graphs (right) are shown for selected lines. Treated (black lines), statistical significance (p values) of the difference between treated and control groups are included.