A drug used alone or with other drugs to treat certain types of cervical, colorectal, lung, and kidney cancer, and glioblastoma (a type of brain cancer). It is used under the brand name Mvasi to treat these cancers. It is also used under the brand name Avastin to treat these cancers and to treat ovarian epithelial, fallopian tube, and primary peritoneal cancer that recurred (came back) after other treatment. Bevacizumab is also being studied in the treatment of other types of cancer. It binds to a protein called vascular endothelial growth factor (VEGF). This may prevent the growth of new blood vessels that tumors need to grow. Bevacizumab is a type of antiangiogenesis agent and a type of monoclonal antibody.