Author of

• 11745

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  P2.11 - Poster Session 2 - NSCLC Novel Therapies (ID 209)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track: Medical Oncology
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/29/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 11763

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    P2.11-018 - EGFR mutations in NSCLC patients in Central Europe: the INSIGHT observational study (ID 1635)

    09:30 - 09:30  |  Author(s): H. Popper
    • Abstract

    Background
    Central European countries are among those with the highest incidence rates of lung cancer and most of these cancers are smoking-related. The INSIGHT observational study aimed at assessing prevalence and treatment of patients with EGFR mutations in clinical practice in Central Europe. Here we report on the overall findings of this study.

    Methods
    Patients with NSCLC and tested for EGFR mutations between 15 November 2011 and 31 March 2013 in 14 centers from 6 Central European countries (Austria, Czech Republic, Hungary, Poland, Slovakia, Slovenia) were enrolled. EGFR mutations were determined by sequencing, PCR or other techniques.

    Results
    Here we report data on 1009 NSCLC patients who had been enrolled into the INSIGHT study. The patients had the following characteristics: median age 64 (range 29-93), 62% male, 38% female, 99.9% Caucasians, ECOG performance status 0-1, 2 and 3-4 in 79%, 17% and 4%; 19% never-smokers, 46% former smokers, 35% current smokers; 79% adenocarcinomas, 2% adenosquamous carcinomas, 7% squamous cell carcinomas, 9% NSCLC NOS and 3% others; tumor stages I-II, III and IV in 15.5%, 24% and 60.5% of the patients. EGFR mutations were found in 163 (16%) patients. Patients with mutations had the following characteristics: age median 66 (range 34-89) years, 46% male, 54% female, 47% never-smokers, 38% former smokers, 15% current smokers; performance status was recorded in 153 patients and was 0, 1, 2 and 3 in 30%, 50%, 14% and 6% of the patients. The mutation-positive tumors had the following characteristics: 85% adenocarcinomas, 4% adenosquamous carcinomas, 4% squamous cell carcinomas, 2% NSCLC NOS, and 5% others. Among patients with mutations, exon 18 mutations were seen in 7% of the patients, exon 19 mutations in 50% of the patients including deletions in 39%, exon 20 mutations in 12%, exon 21 mutations in 39% including L858R in 28% of the patients. Detailed data on systemic treatment were available for 122 patients with advanced EGFR mutation-positive NSCLC and most of these patients received EGFR-directed tyrosine kinase inhibitors during the course of their disease.

    Conclusion
    The INSIGHT observational study demonstrated that EGFR mutation testing has been established in the participating centres in Central Europe. The mutation rate of 16% is on the upper limit of the range seen in Western European countries but a potential selection bias for testing of patients with higher likelihood of harboring EGFR mutations cannot be excluded. Systemic treatment in patients with EGFR mutations is similar to treatment patterns observed in other countries. This study was supported by Boehringer Ingelheim Regional Center Vienna.