LILRB1 and neoplasm: We did not see significant differences in ILT2-expressing T cell or Treg populations following oncolytic vaccinia immunotherapy (Figure 4) but we did find that ILT2-expressing T cells were correlated with clinical response as defined through local gene expression in the tumor microenvironment (Figure 2B) and in peripheral blood T cell staining (Figures 5 and6).