(108) analyzed PD-L1 expression in 101 TNBC patients using a cutoff value of PD-L1>=5%, the positive rate of PD-L1 expression in the primary tumor tissue was 38.6%, The positive rate of PD-L1 expression in the tissue of axillary lymph node metastasis is 59.4%. This evidence concerns the gene CD274 and neoplasm.