Abstract

Despite the use of CTLA4 and PD1-PDL1-targeted cancer immunotherapy, a large proportion of patients with many tumor types fail to respond including uveal melanoma (UM). Targeting inhibitory immune checkpoint lymphocyte activation gene-3 (LAG3) in tumor microenvironment of UM holds promising potential. LAG3 (CD233) is an inhibitory receptor that plays a critical role in controlling T cell tolerance, preventing autoimmunity and limiting immune-mediated tissue damage. It is highly upregulated on exhausted T cells in tumors.

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