AR-V7 is an important oncogenic driver and plays a role as an early diagnostic and prognostic marker, as well as a therapeutic target for antagonists such as niclosamide and TAS3681. Anti-AR-V7 drugs have shown promise in recent clinical investigations on this subset of patients. This mini-review focuses on the relevance of AR-V7 in the clinical manifestations of castration-resistant prostate cancer (CRPC) and summarizes redemptive therapeutic strategies.
The recommended phase 2 dose is 300 mg BID . TAS3681 has a manageable safety profile and has antitumor activity against heavily pretreated, multi-drug resistant mCRPC . The study expansion phase is enrolling pts who have progressed on ABI or ENZ +/- taxane CT.