<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In this study, profiles of epidermal growth factor receptor (EGFR) and Kirsten ras sarcoma (KRAS) mutations and response to erlotinib therapy have been investigated in patients with non-small cell lung cancer (NSCLC). DNA from 300 patients with NSCLC was extracted from paraf-fin-embedded tissues. After the extracted DNA was sequenced by pyrosequencing method, a total of 97 (32.0%) patients out of 300 were detected to carry an EGFR mutation and 75 (25.0%) patients out of 300 carried a KRAS mutation; 20 (6.6%) patients were detected to carry both of EGFR and KRAS mutations. The EGFR mutations were found to be statistically significant in female patients (48.0 women <italic>vs</italic>. 28.0% men, non smokers (49.0 <italic>vs</italic>. 26.0%) and adenocarcinoma (37.8 <italic>vs</italic>. squamous 26.8%). The overall rate of survival in patients receiving erlotinib therapy than in patients who did not. In patients without the KRAS mutation, the median overall survival rate was 161 ± 30 weeks with erlotinib therapy and 90 ± 13 weeks in patients without erlotinib therapy. In patients having KRAS mutation, the median overall survival was 98 ± 16 weeks with erlotinib therapy and 34 ± 16 weeks with no erlotinib therapy. In our study, we once again demonstrated that the presence of these mutations affected response to erlotinib therapy. The KRAS mutations negatively affected survival rate with and without erlotinib therapy.</p></abstract>

In this study, profiles of epidermal growth factor receptor (EGFR) and Kirsten ras sarcoma (KRAS) mutations and response to erlotinib therapy have been investigated in patients with non-small cell lung cancer (NSCLC). DNA from 300 patients with NSCLC was extracted from paraf-fin-embedded tissues. After the extracted DNA was sequenced by pyrosequencing method, a total of 97 (32.0%) patients out of 300 were detected to carry an EGFR mutation and 75 (25.0%) patients out of 300 carried a KRAS mutation; 20 (6.6%) patients were detected to carry both of EGFR and KRAS mutations. The EGFR mutations were found to be statistically significant in female patients (48.0 women vs. 28.0% men, non smokers (49.0 vs. 26.0%) and adenocarcinoma (37.8 vs. squamous 26.8%). The overall rate of survival in patients receiving erlotinib therapy than in patients who did not. In patients without the KRAS mutation, the median overall survival rate was 161 ± 30 weeks with erlotinib therapy and 90 ± 13 weeks in patients without erlotinib therapy. In patients having KRAS mutation, the median overall survival was 98 ± 16 weeks with erlotinib therapy and 34 ± 16 weeks with no erlotinib therapy. In our study, we once again demonstrated that the presence of these mutations affected response to erlotinib therapy. The KRAS mutations negatively affected survival rate with and without erlotinib therapy.

The frequency of EGFR And KRAS mutations in the Turkish population with non-small cell lung cancer and their response to erlotinib therapy

Balkan Journal of Medical Genetics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

In this study, profiles of epidermal growth factor receptor (EGFR) and Kirsten ras sarcoma (KRAS) mutations and response to erlotinib therapy have been...

The frequency of EGFR And KRAS mutations in the Turkish population with non-small cell lung cancer and their response to erlotinib therapy

Article Category: Original Article

Published Online: Dec 31, 2018

Page range: 21 - 26

DOI: https://doi.org/10.2478/bjmg-2018-0022

Keywords
Erlotinib therapy, Epidermal growth factor receptor (EGFR), Kirsten ras sarcoma (KRAS), Non-small cell lung cancer (NSCLC)

© 2018 Demiray A, Yaren A, Karagenç N, Bir F, Demiray AG, Karagür ER, Tokgün O, Elmas L, Akça H, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The frequency of EGFR And KRAS mutations in the Turkish population with non-small cell lung cancer and their response to erlotinib therapy

Article Category: Original Article

Published Online: Dec 31, 2018

Page range: 21 - 26

DOI: https://doi.org/10.2478/bjmg-2018-0022

KeywordsErlotinib therapy, Epidermal growth factor receptor (EGFR), Kirsten ras sarcoma (KRAS), Non-small cell lung cancer (NSCLC)

© 2018 Demiray A, Yaren A, Karagenç N, Bir F, Demiray AG, Karagür ER, Tokgün O, Elmas L, Akça H, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Erlotinib therapy, Epidermal growth factor receptor (EGFR), Kirsten ras sarcoma (KRAS), Non-small cell lung cancer (NSCLC)