Trial Outcomes & Findings for Efficacy, Safety, Tolerability of Gefitinib as 1st Line in Caucasian Patients With EGFR Mutation Positive Advanced NSCLC (NCT NCT01203917)

1060 Caucasian patients with locally advanced or metastatic NSCLC were screened, and 118 patients had activating sensitizing EGFR mutation eligible for the study (EGFR M+). 106 EGFR M+ patients received at least 1 dose of gefitinib. One patient had EGFR mutation not eligible for the study (EGFR M+I) and was started on gefitinib in error.

Efficacy, Safety, Tolerability of Gefitinib as 1st Line in Caucasian Patients With EGFR Mutation Positive Advanced NSCLC

% of patients in the Full analysis set who have a complete response \[CR\] or partial response \[PR\] confirmed by repeat imaging at least 4 weeks later with no evidence of progression between confirmation visits (as defined by Response Evaluation Criteria in Solid Tumours version 1.1 (RECIST 1.1)). CR: disappearance of all target lesions (TLs) \& non-target lesions (NTLs). PR: \>= 30% decrease in the sum of diameters compared to baseline (with no evidence of progression) and the NTLs are at least stable with no evidence of new lesions. Outcome is based on measurements made at site by investigator.

DCR is calculated as the % of the FAS patient population with a best visit response of CR, PR (a visit response of CR or PR which is confirmed at least 4 weeks later) or stable disease (SD). SD is defined as no evidence of CR, PR or progression and must have occurred at a minimum of 6 weeks after first dose of study treatment. (progression is defined as ≥20% increase in the sum of the diameters of target lesions from minimum; clinically significant progression in non-target lesions; the presence of a new lesion or death). Outcome is based on measurements made at site by investigator.

PFS was defined as the time from the first dose of gefitinib study treatment until objective disease progression as defined by RECIST 1.1 (≥20% increase in the sum of the diameters of target lesions from minimum, clinically significant progression in non-target lesions or the presence of a new lesion) or death (by any cause in the absence of progression). Progression is based on measurements made at site by investigator.

OS was defined as the time from first dose of gefitinib study treatment until death by any cause. Patients who had not died at the time of analysis were censored at the last date the patient was known to be alive.

DCR is calculated as the % of the FAS patient population with a best visit response of CR, PR (a visit response of CR or PR which is confirmed at least 4 weeks later) or stable disease (SD). SD is defined as no evidence of CR, PR or progression and must have occurred at a minimum of 6 weeks after first dose of study treatment. (progression is defined as ≥20% increase in the sum of the diameters of target lesions from minimum; clinically significant progression in non-target lesions; the presence of a new lesion or death). Outcome is based on measurements of scans by central review.

% of patients in the Full analysis set who have a complete response \[CR\] or partial response \[PR\] confirmed by repeat imaging at least 4 weeks later with no evidence of progression between confirmation visits (as defined by Response Evaluation Criteria in Solid Tumours version 1.1 (RECIST 1.1)). CR: disappearance of all target lesions (TLs) \& non-target lesions (NTLs). PR: \>= 30% decrease in the sum of diameters compared to baseline (with no evidence of progression) and the NTLs are at least stable with no evidence of new lesions. Outcome is based on measurements of scans by central review.

PFS was defined as the time from the first dose of gefitinib study treatment until objective disease progression as defined by RECIST 1.1 (≥20% increase in the sum of the diameters of target lesions from minimum, clinically significant progression in non-target lesions or the presence of a new lesion) or death (by any cause in the absence of progression). Progression is based on measurements of scans by central review.