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Poster Display Session (ID 63)
- Event: ELCC 2017
- Type: Poster Display Session
- Presentations: 1
- Coordinates: 5/07/2017, 12:30 - 13:00, Hall 1
110P - Afatinib for patients with advanced NSCLC pretreated with chemotherapy and an EGFR tyrosine kinase inhibitor: Retrospective analysis of the Swiss Afatinib Named Patient Program (ID 505)
12:30 - 13:00 | Author(s): M. Ehmann
Epidermal growth factor receptor (EGFR) mutations are found in 12-15% of lung adenocarcinoma patients in European countries. Afatinib is a second-generation EGFR tyrosine kinase inhibitor (TKI) and is approved for stage IV NSCLC patients with common EGFR mutations. Based on the LUX-Lung 1 trial a named patient program for afatinib was initiated in Switzerland. We thus aimed to evaluate afatinib activity in patients which where previous treated with chemotherapy and first-generation TKIs.
This multicentre retrospective analysis was performed in 11 institutions in Switzerland. We reviewed clinical records of patients included in the afatinib NPP.
Between 03/2011 and 04/2014 a total of 69 patients were included in the NPP. Baseline characteristics were obtained from all these patients. Follow-up data were accessible from 41 patients. Median age of the population was 63 years (range, 46-79). 68% of patients were female and 28% were never smoker. Adenocarcinoma was the predominant histological subtype (93%). 56 patients (81%) had a proven EGFR mutation. Of those, 29 patients (52%) had a deletion 19, 16 patients (29%) had a L858R mutation in exon 21. A T790M mutation was detected in 10 patients (18%). 50 patients (73%) received treatment with erlotinib and 14 patients (20%) with gefitinib before inclusion in the NPP. 31 patients were evaluable for response assessment by RECIST 1.1. One patient (3.2%) achieved a complete remission, 4 patients (12.9%) showed a partial remission and 3 patients (9.7%) disease stabilization. Mean duration of afatinib therapy was 200 days (95% CI 146-255). Mean overall survival (OS) from diagnosis of metastatic NSCLC was 17.2 months (95%CI 11.9-22.6). In multivariate analysis, EGFR mutation was associated with response to afatinib.
This study confirms the activity of afatinib in pretreated lung adenocarcinoma. The benefit is larger in patients with EGFR mutation positive tumors and mainly in those with classical mutations (deletion 19 or point mutation L858R in exon 21).
Clinical trial identification:
Legal entity responsible for the study:
Unrestricted educational grant by Boehringer-Ingelheim
S.I. Rothschild: Advisory Board Boehringer-Ingelheim (honorary paid to the institution). All other authors have declared no conflicts of interest.