The present invention relates to VEGF-binding agents, DLL4-binding agents, VEGF/DLL4 bispecific binding agents, and methods of using the agents for treating diseases such as cancer, particularly pancreatic, colorectal, and endometrial cancers. Also provided are methods, compositions, and kits for treatment of tumors or cancer using combinations that include a VEGF/DLL4 bispecific agent and one or more chemotherapeutic agents (e.g., gemcitabine and ABRAXANE® leucovorin, 5- fluorouracil, and irinotecan and paclitaxel and carboplatin). The present invention further provides methods of using the agents or combinations of agents to inhibit growth of a pancreatic, colorectal, or endometrial tumor. Also described are methods of treating cancer, particularly pancreatic, colorectal, and endometrial cancer, comprising administering a therapeutically effect amount of an agent, antibody, or therapeutic combination of the present invention to a patient having a tumor or cancer.
