To further verify this result in HNSCC samples, we scored the STT3B and PD‐L1 glycosylation (a combination of PD‐L1 and Con A) status in a tissue microarray and found that the level of STT3B was positively associated with Con A+/PD‐L1 but not with total Con A and PD‐L1 expression (Figure 6E–I, Figure S10). This evidence concerns the gene CD274 and head and neck squamous cell carcinoma.