Their study highlighted PD-L1 expression was linked to advanced stage of disease (OR 3.93, 95% CI 2.44–6.32, P < 0.001) and worse OS in thymoma (HR 1.89, 95% CI 1.09–3.28, P = 0.023) but not to DFS (HR 1.36, 95% CI: 0.97–1.92, P = 0.074) [24]. Here, CD274 is linked to thymoma.