According to tumor diameter, the positivity rates of PD-L1 expression using the 73–10, SP142, and E1L3N assays were 87.1%, 77.4%, and 54.8% for tumor diameter ≤ 20 mm, and 71.0%, 58.1%, and 38.7% for tumor diameter > 20 mm, respectively. This evidence concerns the gene CD274 and neoplasm.