To compare the efficacy of simultaneous EGFR-TKI and chemotherapy with that of sequential treatment after patients gradually progressed from first-line EGFR-TKI treatment. Patients who had gradual progression and EGFR-T790M mutation-negative were randomly divided into two groups: in concurrent group, patients were treated with pemetrexed plus cisplatin along with the same EGFR-TKI; in sequential group, patients continued with EGFR-TKI until the disease progressed again according to the RECIST criteria, and then switched to chemotherapy. We evaluated progression-free survival (PFS) and overall survival (OS) time of patients. For sequential group, PFS was PFS1 (gradual progression to discontinue EGFR-TKI) plus PFS2 (chemotherapy alone).
Name: icotinib combined with pemetrexed plus cisplatin
Name: first icotinib and then pemetrexed plus cisplatin
Description: Radiographic assessments were performed when enrolled and every 8 weeks until disease progression after chemotherapy according to RECIST version 1.1. After PD, collect the survival information every 16 weeks until death or withdrawal of study consent.
Measure: Progression-free survival (PFS) Time: 16 monthsDescription: Radiographic assessments were performed when enrolled and every 8 weeks until disease progression after chemotherapy according to RECIST version 1.1. After PD, collect the survival information every 16 weeks until death or withdrawal of study consent.
Measure: overall survival (OS) Time: 32 monthsAllocation: Randomized
Parallel Assignment
There are 2 SNPs
3. A cytologic diagnosis is acceptable (i.e., FNA or pleural fluid cytology) 4. Sensitive EGFR mutations (exon 19 deletion or L858R mutation in exon 21) 5. --- L858R ---
Patients who had gradual progression and EGFR-T790M mutation-negative were randomly divided into two groups: in concurrent group, patients were treated with pemetrexed plus cisplatin along with the same EGFR-TKI; in sequential group, patients continued with EGFR-TKI until the disease progressed again according to the RECIST criteria, and then switched to chemotherapy. --- T790M ---
7) Patients did not achieve acquired EGFR-T790M mutation assessed by ARMS, next-generation sequencing (NGS) or droplet digital PCR (ddPCR) after first-line EGFR-TKI therapy 8) Patients did not receive any chemotherapy previously 9) Able to comply with study and follow-up procedures 10) Age >=18 years, ECOG PS: 0~2, estimated survival duration more than 3 months; 11) Major organ function Exclusion criteria: 1. --- T790M ---
The criteria of local progression 6. Patients achieved acquired EGFR-T790M mutation assessed by ARMS, next-generation sequencing (NGS) or droplet digital PCR (ddPCR) after first-line EGFR-TKI therapy 7. Previously (within 5 years) or presently suffering from other malignancies 8. --- T790M ---