Paul Monk, MD, Ohio State University Comprehensive Cancer Center, Columbus, OH, discusses BXCL701 (talabostat), an oral small molecule inhibitor of dipeptidyl peptidases, which has been evaluated in a Phase Ib/II study in combination with pembrolizumab, in patients ith metastatic castration-resistant prostate cancer (mCRPC). Oral BXCL701 in combination with pembrolizumab demonstrates encouraging anti-tumor activity in very late-line, refractory mCRPC adenocarcinoma.This interview took place at the European Society for Medical Oncology (ESMO) 2021 congress.