In this trial, treatment efficacy and safety of retreatment with 1st generation epidermal growth factor receptor(EGFR) tyrosine kinase inhibitor(TKI)s(Gefitinib/Erlotinib), will be assessed in patients with sensitizing EGFR mutation positive Non-Squamous Cell Carcinoma patients who previously treated with EGFR TKI and cytotoxic chemotherapy
Name: EGFR
Description: Assessed on based of RECIST 1.1.
Measure: Objective Response Rate(ORR) including rage of CR&PR Time: Through study completion (5 years)Description: Progression-free survival (PFS) the time from first dose of the study drug until the date of disease progression or death by any cause
Measure: Progression Free Survival, PFS Time: Through study completion (5 years)Description: Overall Survival (OR) the time from first dose of the study drug until the date of death by any cause
Measure: Overall Survival Time: Through study completion (5 years)Description: Assessment on the base of NCI-CTCAE (version 4.03)
Measure: The incidence of Adverse Events(including Serious Adverse Events and Adverse Drug Reactions) Time: Through study completion (5 years)Allocation: N/A
Single Group Assignment
There are 2 SNPs
Inclusion Criteria: 1. Males or females ≥ 19 years of age 2. Non Small Cell Lung Cancer(Non-Squamous Cell Carcinoma) patients who had shown clinical benefits (Complete response(CR) or Partial response(PR) or Stable disease(SD) ≥6 months) from EGFR-TKIs as first line treatment and developed progressive disease, and then received cytotoxic chemotherapy more than 4 cycles and developed progressive disease, and then confirmed T790 negative and sensitizing EGFR mutation(E19Del, L858R, L861Q, G719X, E19insertion) positive in Histologic, cytologic specimen or blood. --- L858R ---
Patients who are difficult to include in this study in accordance with the investigator's judgment due to severe adverse effects during previous EGFR TKI treatment Inclusion Criteria: 1. Males or females ≥ 19 years of age 2. Non Small Cell Lung Cancer(Non-Squamous Cell Carcinoma) patients who had shown clinical benefits (Complete response(CR) or Partial response(PR) or Stable disease(SD) ≥6 months) from EGFR-TKIs as first line treatment and developed progressive disease, and then received cytotoxic chemotherapy more than 4 cycles and developed progressive disease, and then confirmed T790 negative and sensitizing EGFR mutation(E19Del, L858R, L861Q, G719X, E19insertion) positive in Histologic, cytologic specimen or blood. --- L858R ---
Inclusion Criteria: 1. Males or females ≥ 19 years of age 2. Non Small Cell Lung Cancer(Non-Squamous Cell Carcinoma) patients who had shown clinical benefits (Complete response(CR) or Partial response(PR) or Stable disease(SD) ≥6 months) from EGFR-TKIs as first line treatment and developed progressive disease, and then received cytotoxic chemotherapy more than 4 cycles and developed progressive disease, and then confirmed T790 negative and sensitizing EGFR mutation(E19Del, L858R, L861Q, G719X, E19insertion) positive in Histologic, cytologic specimen or blood. --- L858R --- --- L861Q ---
Patients who are difficult to include in this study in accordance with the investigator's judgment due to severe adverse effects during previous EGFR TKI treatment Inclusion Criteria: 1. Males or females ≥ 19 years of age 2. Non Small Cell Lung Cancer(Non-Squamous Cell Carcinoma) patients who had shown clinical benefits (Complete response(CR) or Partial response(PR) or Stable disease(SD) ≥6 months) from EGFR-TKIs as first line treatment and developed progressive disease, and then received cytotoxic chemotherapy more than 4 cycles and developed progressive disease, and then confirmed T790 negative and sensitizing EGFR mutation(E19Del, L858R, L861Q, G719X, E19insertion) positive in Histologic, cytologic specimen or blood. --- L858R --- --- L861Q ---