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An agonistic humanized monoclonal antibody that recognizes inducible T-cell co-stimulator (ICOS; CD278), with potential antineoplastic activity. Upon administration, anti-ICOS agonist monoclonal antibody JTX-2011 targets and binds to ICOS expressed on certain T cells. This stimulates ICOS-mediated signaling, induces proliferation of ICOS-positive T cells, enhances cytotoxic T-lymphocyte (CTL) survival and augments the CTL-mediated immune response against tumor cells. ICOS, a T-cell specific, CD28-superfamily co-stimulatory molecule and immune checkpoint protein, is normally expressed on certain activated T cells and plays a key role in the proliferation and activation of T cells. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C129876\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C129876\' NCI Thesaurus)
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