FGFR3 and non-small cell lung carcinoma: Consistent with the failure of gefitinib to induce FGFR2 and FGFR3 protein in NSCLC cell lines lacking EGFR (Figure 1B), gefitinib treatment had no effect on fgfr2-luc activity in the EGFR-null NSCLC cell line, H520 (Figure 2A).