CD274 and neoplasm: Another study used oligo-fucoidan aqueous extract supplements, a low-molecular-weight Fucoidan, and illustrated the enhanced effect of the chemotherapeutic drug olaparib on a 4T1 tumor cell line tumor-bearing mouse model by suppressing the production of inflammatory IL-6, phosphorylated epidermal growth factor receptor (p-EFGR), and PD-L1.