EPHA2 and non-small cell lung carcinoma: Similar to the expression of total EphA2, phosphorylation of EphA2 at S897 was high in the NSCLC cell lines with the highest SF2 values (A549, H1299, U-1810) but also evident in some of the more IR-sensitive ones, e.g., HCC827 and PC-9 (SF2 below 0.6) [55] (Figure 1A).