Mammalian target of rapamycin (mTOR) inhibitors block the activity of the mammalian target of rapamycin. Mammalian target of rapamycin is a protein kinase, which regulates growth factors that stimulate cell growth and angiogenesis. In certain cancers the mTOR pathway is more active.
Mammalian target of rapamycin (mTOR) inhibitors are used in treatment of renal cancer and is being studied for use in other types of cancers. More benefits are being seen when MTOR inhibitors are combined with other chemotherapy agents.