RT Journal Article T1 Prognostic model of long-term advanced stage (IIIB-IV) EGFR mutated non-small cell lung cancer (NSCLC) survivors using real-life data. A1 Gutiérrez, Lourdes A1 Royuela, Ana A1 Carcereny, Enric A1 López-Castro, Rafael A1 Rodríguez-Abreu, Delvys A1 Massuti, Bartomeu A1 González-Larriba, José Luis A1 García-Campelo, Rosario A1 Bosch-Barrera, Joaquim A1 Guirado, María A1 Camps, Carlos A1 Dómine, Manuel A1 Bernabé, Reyes A1 Casal, Joaquín A1 Oramas, Juana A1 Ortega, Ana Laura A1 Sala, Mª Angeles A1 Padilla, Airam A1 Aguiar, David A1 Juan-Vidal, Oscar A1 Blanco, Remei A1 Del Barco, Edel A1 Martínez-Banaclocha, Natividad A1 Benítez, Gretel A1 de Vega, Blanca A1 Hernández, Ainhoa A1 Saigi, Maria A1 Franco, Fernando A1 Provencio, Mariano K1 EGFR K1 Long survival K1 Nomogram K1 Non-small cell lung cancer K1 Predictive modeling AB There is a lack of useful diagnostic tools to identify EGFR mutated NSCLC patients with long-term survival. This study develops a prognostic model using real world data to assist clinicians to predict survival beyond 24 months. EGFR mutated stage IIIB and IV NSCLC patients diagnosed between January 2009 and December 2017 included in the Spanish Lung Cancer Group (SLCG) thoracic tumor registry. Long-term survival was defined as being alive 24 months after diagnosis. A multivariable prognostic model was carried out using binary logistic regression and internal validation through bootstrapping. A nomogram was developed to facilitate the interpretation and applicability of the model. 505 of the 961 EGFR mutated patients identified in the registry were included, with a median survival of 27.73 months. Factors associated with overall survival longer than 24 months were: being a woman (OR 1.78); absence of the exon 20 insertion mutation (OR 2.77); functional status (ECOG 0-1) (OR 4.92); absence of central nervous system metastases (OR 2.22), absence of liver metastases (OR 1.90) or adrenal involvement (OR 2.35) and low number of metastatic sites (OR 1.22). The model had a good internal validation with a calibration slope equal to 0.781 and discrimination (optimism corrected C-index 0.680). Survival greater than 24 months can be predicted from six pre-treatment clinicopathological variables. The model has a good discrimination ability. We hypothesized that this model could help the selection of the best treatment sequence in EGFR mutation NSCLC patients. YR 2021 FD 2021-08-31 LK http://hdl.handle.net/10668/18484 UL http://hdl.handle.net/10668/18484 LA en DS RISalud RD Apr 17, 2025