The most common scoring system used in the literature includes a 3‐tiered scoring system based on proportion (number of PD‐L1 stained tumor cells divided by the total number of viable tumor cells, multiplied by 100) of tumor cells staining with negative cases (TPS = tumor proportion score < 1), low positive cases (TPS score ≥ 1–49) and high positive cases (TPS score ≥ 50). The gene discussed is CD274; the disease is neoplasm.