Biochem/Physiol Actions | PF-04691502 is a potent dual mTOR/PI3K inhibitor with Ki values of 1.6, 1.8, 1.9, 2.1 and 16 nM for human PI 3-K δ, α, β, γ, and mTOR, respectively, with no significant inhibitory activity at more than 80 other protein kinases, including PI 3-K downstream kinases, and MAPK family members. PF-04691502 showed antitumor activity in several non-small cell lung carcer (NSCLC) xenografts and ovarian cancer cell lines. PF-04691502 is currently in clinical trials. |