CD274 and neoplasm: In previous studies, the correlations between the levels of RANTES, PD-L1, IFN-γ, TNF-α, TGF-β, VEGF-A, and VEGF-C in the tumor or serum, and clinicopathological parameters such as TNM classification, histological grade, and poor prognosis were reported, but the results are limited and remain inconclusive.