Another report showed that inhibition of the PERK–eIF2α-GRP94 signaling pathway silenced the epidermal growth factor receptor (EGFR) and then increased the radiosensitivity of both radiosensitive and radioresistant oropharyngeal squamous cell carcinoma (OSCC) cells (Zhang et al., 2018). This evidence concerns the gene EIF2A and oropharynx squamous cell carcinoma.