RT Journal Article T1 Epigenetic prediction of response to anti-PD-1 treatment in non-small-cell lung cancer: a multicentre, retrospective analysis. A1 Duruisseaux, Michäel A1 Martinez-Cardus, Anna A1 Calleja-Cervantes, Maria E A1 Moran, Sebastian A1 Castro-de-Moura, Manuel A1 Davalos, Veronica A1 Piñeyro, David A1 Sanchez-Cespedes, Montse A1 Girard, Nicolas A1 Brevet, Marie A1 Giroux-Leprieur, Etienne A1 Dumenil, Coraline A1 Pradotto, Monica A1 Bironzo, Paolo A1 Capelletto, Enrica A1 Novello, Silvia A1 Cortot, Alexis A1 Copin, Marie-Christine A1 Karachaliou, Niki A1 Gonzalez-Cao, Maria A1 Peralta, Sergio A1 Montuenga, Luis M A1 Gil-Bazo, Ignacio A1 Baraibar, Iosune A1 Lozano, Maria D A1 Varela, Mar A1 Ruffinelli, Jose C A1 Palmero, Ramon A1 Nadal, Ernest A1 Moran, Teresa A1 Perez, Lidia A1 Ramos, Immaculada A1 Xiao, Qingyang A1 Fernandez, Agustin F A1 Fraga, Mario F A1 Gut, Marta A1 Gut, Ivo A1 Teixidó, Cristina A1 Vilariño, Noelia A1 Prat, Aleix A1 Reguart, Noemi A1 Benito, Amparo A1 Garrido, Pilar A1 Barragan, Isabel A1 Emile, Jean-François A1 Rosell, Rafael A1 Brambilla, Elisabeth A1 Esteller, Manel K1 Programmed Cell Death 1 Receptor K1 Progression-Free Survival K1 Proportional Hazards Models K1 Repressor Proteins AB Anti-programmed death-1 (PD-1) treatment for advanced non-small-cell lung cancer (NSCLC) has improved the survival of patients. However, a substantial percentage of patients do not respond to this treatment. We examined the use of DNA methylation profiles to determine the efficacy of anti-PD-1 treatment in patients recruited with current stage IV NSCLC. In this multicentre study, we recruited adult patients from 15 hospitals in France, Spain, and Italy who had histologically proven stage IV NSCLC and had been exposed to PD-1 blockade during the course of the disease. The study structure comprised a discovery cohort to assess the correlation between epigenetic features and clinical benefit with PD-1 blockade and two validation cohorts to assess the validity of our assumptions. We first established an epigenomic profile based on a microarray DNA methylation signature (EPIMMUNE) in a discovery set of tumour samples from patients treated with nivolumab or pembrolizumab. The EPIMMUNE signature was validated in an independent set of patients. A derived DNA methylation marker was validated by a single-methylation assay in a validation cohort of patients. The main study outcomes were progression-free survival and overall survival. We used the Kaplan-Meier method to estimate progression-free and overall survival, and calculated the differences between the groups with the log-rank test. We constructed a multivariate Cox model to identify the variables independently associated with progression-free and overall survival. Between June 23, 2014, and May 18, 2017, we obtained samples from 142 patients: 34 in the discovery cohort, 47 in the EPIMMUNE validation cohort, and 61 in the derived methylation marker cohort (the T-cell differentiation factor forkhead box P1 [FOXP1]). The EPIMMUNE signature in patients with stage IV NSCLC treated with anti-PD-1 agents was associated with improved progression-free survival (hazard ratio [HR] 0·010, 95% CI 3·29 × 10-4-0·0282; p=0·0067) and overall survival (0·080, 0·017-0·373; p=0·0012). The EPIMMUNE-positive signature was not associated with PD-L1 expression, the presence of CD8+ cells, or mutational load. EPIMMUNE-negative tumours were enriched in tumour-associated macrophages and neutrophils, cancer-associated fibroblasts, and senescent endothelial cells. The EPIMMUNE-positive signature was associated with improved progression-free survival in the EPIMMUNE validation cohort (0·330, 0·149-0·727; p=0·0064). The unmethylated status of FOXP1 was associated with improved progression-free survival (0·415, 0·209-0·802; p=0·0063) and overall survival (0·409, 0·220-0·780; p=0·0094) in the FOXP1 validation cohort. The EPIMMUNE signature and unmethylated FOXP1 were not associated with clinical benefit in lung tumours that did not receive immunotherapy. Our study shows that the epigenetic milieu of NSCLC tumours indicates which patients are most likely to benefit from nivolumab or pembrolizumab treatments. The methylation status of FOXP1 could be associated with validated predictive biomarkers such as PD-L1 staining and mutational load to better select patients who will experience clinical benefit with PD-1 blockade, and its predictive value should be evaluated in prospective studies. "Obra Social" La Caixa, Cellex Foundation, and the Health and Science Departments of the Generalitat de Catalunya. PB Elsevier YR 2018 FD 2018-08-09 LK http://hdl.handle.net/10668/12826 UL http://hdl.handle.net/10668/12826 LA en NO Duruisseaux M, Martínez-Cardús A, Calleja-Cervantes ME, Moran S, Castro de Moura M, Davalos V, et al. Epigenetic prediction of response to anti-PD-1 treatment in non-small-cell lung cancer: a multicentre, retrospective analysis. Lancet Respir Med. 2018 Oct;6(10):771-781 DS RISalud RD Apr 9, 2025