When comparing pure DCIS and invasive carcinoma in the whole group, the infiltration of CD4+, CD8+, and FOXP3+ TILs and the presence of PD-L1+ immune cells were significantly higher in invasive carcinoma compared to pure DCIS (all p < 0.001; Table 3). The gene discussed is FOXP3; the disease is ductal breast carcinoma in situ.