A drug used with exemestane to treat some postmenopausal women with advanced breast cancer that is hormone-receptor positive and HER2 negative. It is also used to treat certain types of pancreatic, lung, and gastrointestinal neuroendocrine tumors that cannot be removed by surgery, are advanced, or have spread to other parts of the body. It is also used to treat advanced renal cell carcinoma (a type of kidney cancer) and subependymal giant cell astrocytoma in some patients, including children. RAD001 is being studied in the treatment of other types of cancer. It stops cancer cells from dividing and may prevent the growth of new blood vessels that tumors need to grow. It also lowers the body’s immune response. RAD001 is a type of kinase inhibitor, a type of angiogenesis inhibitor, and a type of immunosuppressant.