original_query: What is the purpose of bevacizumab?
query: What is the purpose of bevacizumab?
answer: Bevacizumab (Avastin) is a medication used to treat various cancers (colon, lung, glioblastoma, renal cell carcinoma) and age-related macular degeneration.  It works as an angiogenesis inhibitor, slowing the growth of new blood vessels.