 This study will be conducted at approximately 5 - 8 study centers in Germany. Up to 60 patients will be enrolled into this study to ensute that at least 12 - 15 patients for each combination regimen can be evaluated for safety and pharmacokinetics. For this reason a minimum of 20 patients will receive mFOLFOX6 in combination with BAY73-4506 and at least 20 patients will receive FOLFIRI in combination with BAY73-4506. 