oregovomab oregovomab oregovomab (marketed under the trade name ovarex) is a mouse monoclonal antibody it binds to the antigen ca125, a carbohydrate antigen. it is designed for the treatment of ovarian cancer. oregovomabmonoclonal antibodytypewhole antibodysourcemousetargetca125clinical datatrade namesovarexatc codenoneidentifierscas number213327-37-8 nchemspidernoneuniihx101e7l6skeggd05269 ychemical and physical datamolar massca. 150 kg/mol ny (what is this?) (verify) this drug was developed by altarex corp.