CD274 and neoplasm: Combination therapy with 2 Gy x 6 + anti-PD-L1 showed greater tumor reduction: the concurrent group had an average tumor volume of 158.0 ± 138.9 mm3 (P > 0.05 versus CT-only control, 2-way ANOVA across timepoints showed P < 0.0001), while the sequential group showed further reduction with an average tumor volume of 86.4 ± 58.7 mm3 (P = 0.019 versus CT-only control).