IL6 and head and neck squamous cell carcinoma: High IL6 expression was associated with higher odds of death in both the HNSCC cohort (HR = 1.14, 95% CI 1.05‐1.24, P = .001) and OTSCC subgroup (HR = 1.21, 95% CI 1.03‐1.42, P = .021, Table 1E).