Interestingly, sarcomatoid carcinomas in early tumour stages I–IIIA tend to show more often no or less than 1% PD-L1 tumour cell expression (20.7%; 18/87), more tumours (26.4%; 23/87) with lower expression (>1–49%) and slightly fewer tumours (55%; 48/87) with high PD-L1 expression (≥50%) than in advanced stages IIIB–IV. Here, CD274 is linked to sarcomatoid carcinoma.