The present invention relates to methods and materials for treating an individual with KRAS-mutated cancer or a cancer in which ROCK is inhibited independently of mutated KRAS. The invention is based on the prevention or disruption of the binding of TRAIL-Receptor to its ligand, TRAIL, in vivo, for example by use of an agent that neutralizes TRAIL and/or a the TRAIL-Receptor (such TRAIL-R2) and/or diminishes TRAIL/TRAIL-Receptor activity, thereby reducing cancer cell transformation, migration and metastasis, prolonging survival of patients.