Table 1 shows the baseline patient characteristics. There were no statistically significant differences in age, gender, chemotherapy, primary tumor site, perineural invasion, T stage, N stage, M stage, and tumor grade between the IL1B high- and low-expression groups (P > 0.05), except for HPV status (P = 0.012) and radiotherapy (P = 0.04). Here, IL1B is linked to neoplasm.