FRAP1 (mTOR) is a serine⁄threonine kinase that plays a critical role in cellular growth and proliferation. Perturbations in the mTOR⁄PI3-kinase⁄AKT pathway are associated with numerous forms of cancer. FRAP1 is also the target of rapamycin and its analogues, which are currently used as immunosuppressants and cancer therapeutics.