- Recurrent or progressive disease after prior one EGFR-TKI treatment. The patient must have stopped the EGFR-TKI treatment for at least two weeks. The response to EGFR-TKI should be partial response or complete response or stable disease (the duration of stable disease should be more than 3 months). Patients who had never received chemotherapy or received one regimen chemotherapy before EGFR-TKI are eligible.