CD274 and esophageal squamous cell carcinoma: In detail, there was an improvement of 5 months in OS in patients with ESCC and PD-L1 ≥ 10, 3 months in patients with ESCC, 4 months in patients with PD-L1 ≥ 10 and almost 3 months in the entire study population (see Table 1 for additional details).