Patients harboring elevated proportions of HLA‐DR+ tumor cells (HR = 2.24, 95% CI: 1.15–4.35, p = 0.006) or HLA‐DR+CD274+ tumor cells (HR = 2.76, 95% CI: 1.32–5.78, p < 0.001) had significantly worse OS (Figure 5D,E). Here, CD274 is linked to neoplasm.