EGFR and head and neck squamous cell carcinoma: We found that the EGFR/AMAP1 'Homo' group, in which expressions of EGFR and AMAP1 both belong to the high-expression groups, shows a shorter time to events after HNSCC resection than the 'Others', in which either one of the AMAP1 expression or the EGFR expression, or both belong to the low-expression groups (p = 0.012 for the disease-free survival and p < 0.001 for the overall survival, Figure 3C and D).