It targets TRAIL - R1 , also known as DR4 , which is expressed on the surface of many tumor cell types .
Mapatumumab ( HGS - ETR1 ) is an experimental human monoclonal antibody undergoing clinical trials for the treatment of cancer .
Mapatumumab targets TRAIL - R1 , also known as DR4 , which is expressed on the surface of many tumor cell types .
Mapatumumab ( HGS - ETR1 ) is an experimental human monoclonal antibody undergoing clinical trials for the treatment of cancer .