To confirm that EphA2 binds to mutated forms of EGFR and is relevant in these lung cancers, HEK293T cells transfected with Flag-EphA2 and EGFR (WT, L858R, or L858R/T790M) were immunoprecipitated with anti-EGFR antibody. The gene discussed is EGFR; the disease is lung carcinoma.