The induction of PD-L1 expression at the surface of colorectal cancer SW620 cells by RSV or a mixture with stilbenoids was significantly decreased when cells were co-treated with an IKK kinase inhibitor such as BMS-345541 [52,64], suggesting that NF-kB activation is involved in the induction of PD-L1 expression by these stilbenoids. This evidence concerns the gene CD274 and colorectal cancer.