Anti-PS antibody bavituximab enhances activity of immunity checkpoint inhibitors: Results of SUNRISE study subgroup / WCLC 2017 2017/11/15 Care net Phosphatidylserin (PS) is widely expressed on the surface of cells in the cancer microenvironment, suppresses induction of tumor-specific T cells, and expresses high immunosuppressive effect. bavituximab is a mela IgG1 monoclonal antibody targeting PS, tumor ... [ read more ] (Care Net Hosoda Masayuki)