Although 6/19 PDCLs exhibited EGFR and GHR mRNA levels below this stringent threshold (Figure 2A), GHR and EGFR overexpression was identified in 6/32 (18.8%) and 7/32 (21.9%) GBM PDCLs, respectively (Figure 2A). The gene discussed is EGFR; the disease is glioblastoma.