CD274 and breast cancer: Both PD-L1 and c-Met expressions showed association with high histologic grade (p < 0.001 and p < 0.001, respectively), ER− (p = 0.007 and p < 0.001, respectively), PR− (p = 0.022 and p = 0.001, respectively), and BC subtype (p = 0.028 and p = 0.001, respectively).