A drug used to treat advanced kidney cancer that did not respond to treatment with certain other anticancer drugs. It is also being studied in the treatment of other types of cancer. Afinitor stops cancer cells from dividing and may block the growth of new blood vessels that tumors need to grow. It also decreases the body’s immune responses. It is a type of immunosuppressant and a type of antiangiogenesis agent. Also called everolimus and RAD001.