EGFR-TKIs first line treatment evidences impressive objectives response rates.
After 9–12 months acquired resistance to EGFR-TKIs arises.
No optimal therapy has been established beyond EGFR-TKIs progression.
This multicenter study describes patients who progressed to EGFR-TKIs.
Treatments, efficacy and safety beyond EGFR-TKIs progression have been described.