RT Journal Article T1 Plasma lipidome and risk of atrial fibrillation: results from the PREDIMED trial A1 Toledo, Estefanía A1 Wittenbecher, Clemens A1 Razquin, Cristina A1 Ruiz-Canela, Miguel A1 Clish, Clary B A1 Liang, Liming A1 Alonso, Álvaro A1 Hernández-Alonso, Pablo A1 Becerra-Tomás, Nerea A1 Arós-Borau, Fernando A1 Corella, Dolores A1 Ros, Emilio A1 Estruch, Ramón A1 García-Rodríguez, Antonio A1 Fitó, Montserrat A1 Lapetra, José A1 Fiol, Miquel A1 Alonso-Gómez, Ángel M. A1 Serra-Majem, Lluís A1 Deik, Amy A1 Salas-Salvadó, Jordi A1 Hu, Frank B. A1 Martínez González, Miguel Ángel K1 Alimentación - Mediterráneo (Región) AB The potential role of the lipidome in atrial fibrillation (AF) development is still widely unknown. We aimed to assess the associationbetween lipidome profiles of the Prevención con Dieta Mediterránea (PREDIMED) trial participants and incidenceof AF. We conducted a nested case–control study (512 incident centrally adjudicated AF cases and 735 controls matchedby age, sex, and center). Baseline plasma lipids were profiled using a Nexera X2 U-HPLC system coupled to an ExactivePlus orbitrap mass spectrometer. We estimated the association between 216 individual lipids and AF using multivariableconditional logistic regression and adjusted the p values for multiple testing. We also examined the joint association oflipid clusters with AF incidence. Hitherto, we estimated the lipidomics network, used machine learning to select importantnetwork-clusters and AF-predictive lipid patterns, and summarized the joint association of these lipid patterns weightedscores. Finally, we addressed the possible interaction by the randomized dietary intervention.Forty-one individual lipids were associated with AF at the nominal level (p < 0.05), but no longer after adjustment formultiple-testing. However, the network-based score identified with a robust data-driven lipid network showed a multivariableadjustedORper+1SD of 1.32 (95% confidence interval: 1.16–1.51; p < 0.001). The score included PC plasmalogens and PEplasmalogens, palmitoyl-EA, cholesterol, CE 16:0, PC 36:4;O, and TG 53:3. No interaction with the dietary intervention wasfound. A multilipid score, primarily made up of plasmalogens, was associated with an increased risk of AF. Future studiesare needed to get further insights into the lipidome role on AF.Current Controlled Trials number, ISRCTN35739639. PB Springer Nature YR 2023 FD 2023-04-01 LK https://hdl.handle.net/10630/36562 UL https://hdl.handle.net/10630/36562 LA eng NO Toledo, E., Wittenbecher, C., Razquin, C. et al. Plasma lipidome and risk of atrial fibrillation: results from the PREDIMED trial. J Physiol Biochem 79, 355–364 (2023). https://doi.org/10.1007/s13105-023-00958-0 DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 19 ene 2026