CD274 and neoplasm: And Qing et al. had confirmed that PD-L1 could express more in highly differentiated gastric cancers, and it had an obvious relationship with the depth of invasion (odds ratio [OR] = 3.37; p = 0.005), lymph node metastasis (OR = 2.68; p = 0.020), tumor differentiation (OR = 3.19; p = 0.008), pathological type (χ2 = 8.676; p = 0.013), and survival time (OR = 3.39; p = 0.003) [42].