Urelumab(BMS-66513) is a humanized IgG4 monoclonal antibody, often used as a CD137 agonist.Urelumab has potential antitumor activity, potentiating tumor cell killing by T-cells and natural killer cells, and enhancing the cytotoxicity of Rituximab.Urelumab has been used in the study of solid tumor-related diseases such as diffuse large B-cell lymphoma (DLBCL) and follicular lymphoma (FL). Urelumab can be used to study diseases associated with solid tumors such as diffuse large B-cell lymphoma (DLBCL) and follicular lymphoma (FL).