VSIR and breast cancer: VISTA expression in breast cancer tissue was positively correlated with pathological grade (I-II compared with III; p = 0.001), lymph node status (comparisons among N0, N1, N2, and N3; p = 0.045) and genotype (comparisons among luminal, HER 2+ and basal-like subtypes; p < 0.000) (Table 1).