Samsung Biologics signed a strategic partnership agreement with Kineta, Inc. Samsung Biologics will provide end-to-end CDMO service from cell line development, clinical drug substance, and drug product manufacturing services to support IND filing for KVA12.1, Kineta's novel anti-VISTA antibody in development for the treatment of solid tumors. VISTA is a key driver of the immunosuppressive tumor microenvironment (TME) and is overexpressed on myeloid-derived suppressor cells (MDSC) and regulatory T cells (Tregs). It is a critical myeloid cell immune-checkpoint, and VISTA blockade can reprogram suppressive myeloid cells and reactivate anti-tumor immune function. Preclinical studies demonstrate single agent anti-tumor activity with KVA12.1, and also demonstrate that targeting VISTA in combination with PD-1, PD-L1 or CTLA-4 can significantly improve the anti-tumor efficacy of those checkpoint inhibitors. Kineta's KVA12.1 aims to reprogram the TME in hard-to-treat solid tumors. The manufacturing cell line will be developed with support from Samsung Biologics' R&D Center in San Francisco, and its corresponding clinical trial materials will be manufactured at Samsung Biologics headquarters in Incheon, South Korea.