TY - JOUR TI - Genotyping KRAS and EGFR Mutations in Greek Patients With Non-small-cell Lung Cancer: Incidence, Significance and Implications for Treatment AU - Linardou, Helena AU - Kotoula, Vassiliki AU - Kouvatseas, George and AU - Mountzios, Giannis AU - Karavasilis, Vasilios AU - Samantas, Epaminondas AU - and Kalogera-Fountzila, Anna AU - Televantou, Despina AU - Papadopoulou, AU - Kyriaki AU - Mavropoulou, Xanthipi AU - Daskalaki, Emily AU - Zaramboukas, AU - Thomas AU - Efstratiou, Ioannis AU - Lampaki, Sofia AU - Rallis, Grigorios AU - and Res, Eleni AU - Syrigos, Konstantinos N. AU - Kosmidis, Paris A. and AU - Pectasides, Dimitrios AU - Fountzilas, George JO - Cancer Genomics & Proteomics PY - 2019 VL - 16 TODO - 6 SP - 531-541 PB - INT INST ANTICANCER RESEARCH SN - 1109-6535, 1790-6295 TODO - 10.21873/cgp.20155 TODO - KRAS; EGFR; mutations; platinum-based chemotherapy; NSCLC TODO - Background/Aim: KRAS mutations are reported in 20-25% of non-small cell lung cancer (NSCLC) and their prognostic role is unclear. We studied KRAS and EGFR genotyping in Greek NSCLC patients. Patients and Methods: KRAS and EGFR genotypes were centrally evaluated in 421 NSCLC patients (diagnosed September 1998 -June 2013) and associated with clinicopathological parameters. Outcome comparisons were performed in 288 patients receiving first line treatment. Results: Most patients were male (78.6%), >60 years old (63.9%), current smokers (51.1%), with adenocarcinoma histology (63.9%). EGFR and KRAS mutations were found in 10.7% and 16.6% of all histologies, respectively, and in 14.9% and 21.9% of adenocarcinomas. At 4.5 years median follow-up, KRAS status was an independent negative prognostic factor for overall survival (OS, p=0.016). KRAS mutations conferred 80% increased risk of death in patients receiving first-line treatment (p=0.002). Conclusion: The presence of KRAS mutations is an independent negative prognosticator among Greek NSCLC patients and an independent response predictor to first line treatment. ER -