Biomarker distribution in patients with advanced or recurrent EC treated with dostarlimab monotherapy. A, Percentage of EC tumors with molecular biomarkers in merged cohorts, including POLεmut, TP53mut, NSMP, or dMMR/MSI-H. B, TMB status of tumors in patients with dMMR/MSI-H EC (top) or patients with MMRp/MSS EC (bottom). C, CPS of tumors in patients with dMMR/MSI-H EC (top) or patients with MMRp/MSS EC (bottom). D, Venn diagrams showing percentages of tumors with TMB-H or CPS ≥1 or both in patients with dMMR/MSI-H EC (top) or patients with MMRp/MSS EC (bottom). aTMB status was available for 104 patients with dMMR/MSI-H tumors and 152 patients with MMRp/MSS tumors. bCPS status was available for 114 patients with dMMR/MSI-H tumors and 104 patients with MMRp/MSS tumors. TMB-NA, tumor mutational burden results were not available or undetermined.