4P Targeting PI3K/AKT/mTOR pathway in platinum-resistant ovarian high-grade serous carcinoma: Translational analysis from the randomized phase II OCTOPUS trial

Abstract

In arm 1 of the phase II randomised OCTOPUS trial (ISRCTN16426935), no significant differences in Progression-Free Survival (PFS) or Overall Survival were observed with the addition of vistusertib (V), a dual mTORC1/2 inhibitor, to weekly paclitaxel (wP) in platinum-resistant/refractory ovarian high-grade serous carcinoma. However, preliminary immunohistochemistry (IHC) data suggested that PTEN status may be predictive of benefit of addition of V to wP. Aim: We evaluated if PTEN expression (scored using quantitative digital IHC) or specific genomic features might be predictive of V benefit.