To elucidate the relationship between EHD1 expression and EGFR-TKI resistance, we retrospectively evaluated specimens from a total of 24 lung cancer patients who had received EGFR-TKIs (erlotinib or gefitinib)….As shown in Fig. 1b, EHD1 overexpression was more frequently observed in patients with a poor response to EGFR-TKIs therapy than in patients who responded to EGFR-TKI treatment.