CD274 and breast cancer: Meanwhile, these results were in agreement with several lines of evidence that support the immunogenicity of TNBC: than other subtypes, expression of PD-L1 in level of mRNA in TNBC is evidently higher.[41] The correlation between PD-L1 and these clinical prognostic molecules had also been mentioned in other studies,[42–44] although the results are not exactly the same, suggesting the close relationship between PD-L1 and BC clinical patients.