Immunofluorescence of four endometrial cancers upon the double staining for VISTA and CD8 showed that the samples of two patients were highly infiltrated with CD8+ T cells and highly correlated with VISTA expression, while the other two samples were less infiltrated with VISTA+ CD8+ T cells in the tumour site (Supplementary Figure 1J). The gene discussed is VSIR; the disease is endometrial cancer.