Perseus Proteomics Inc. is a drug discovery biotech venture company based in Tokyo, Japan, incorporated in 2001. It develops antibody drugs for cancer and other diseases, engaging in antibody discovery and research support activities such as hybridoma antibody sequencing, antibody protein production, and contract antibody research, as well as supplying antibody products. Its pipeline includes PPMX-T001 (anti-hepatocarcinoma antibody), PPMX-T002 (anticancer drug), PPMX-T003 (drug for adult T-cell), and PPMX-T004 (antibody drug conjugate). The company has a joint research agreement with ASKA Pharmaceutical Co., Ltd. for developing new antibody drugs and therapeutic drugs for specific disease areas.