This is at the first glance surprising because human cSCC tumors highly express both EGFR and the proliferation marker Ki67 at the tumor invasion front (see Figure 1) and EGFR signaling has been implicated in cSCC proliferation (El-Abaseri et al., 2005; Canueto et al., 2017). The gene discussed is EGFR; the disease is neoplasm.