%0 Journal Article %A Brenner, Juliette %A Bastiaansen, Anna E. M. %A Guasp, Mar %A Muñiz-Castrillo, Sergio %A Iizuka, Takahiro %A de Bruijn, Marienke A. A. M. %A Muñoz-Lopetegi, Amaia %A Martínez-Hernández, Eugenia %A Picard, Géraldine %A Vogrig, Alberto %A Millot, Mathilde %A Finke, Carsten %A Geis, Christian %A Lewerenz, Jan %A Melzer, Nico %A Prüss, Harald %A Räuber, Saskia %A Ringelstein, Marius %A Rostàsy, Kevin %A Sühs, Kurt-Wolfram %A Thaler, Franziska S. %A Wandinger, Klaus-Peter %A Wurdack, Katharina %A Crijnen, Yvette S. %A Kerstens, Jeroen %A van Steenhoven, Robin W. %A Veenbergen, Sharon %A Schreurs, Marco W. J. %A van den Berg, Robert %A Volovici, Victor %A Neuteboom, Rinze F. %A de Vries, Juna M. %A Sillevis Smitt, Peter A. E. %A Nagtzaam, Mariska M. P. %A Franken, Suzanne C. %A Ratuszny, Dominica %A Menge, Til %A Bertolini, Annikki %A Bien, Christian %A Berger, Robert %A Tauber, Simone %A Angstwurm, Klemens %A Seifert-Held, Thomas %A Kraft, Andrea %A Klausewitz, Jaqueline %A Ayzenberg, Ilya %A Eisenhut, Katharina %A Roessling, Rosa %A Heiden, Martha %A Kümpfel, Tania %A Dalmau, Josep %A Leypoldt, Frank %A Honnorat, Jérôme %A Titulaer, Maarten J. %T Development and validation of the NEOS2 score for prediction of long-term outcomes and improvement after first-line immunotherapy in patients with anti-NMDAR encephalitis: an international cohort study %J The lancet / Regional health. Europe %V 62 %@ 2666-7762 %C [Amsterdam] %I Elsevier %M DZNE-2025-01431 %P 101562 %D 2026 %Z Funding: This study was funded by Dioraphte (charity; project 2001 0403). %X Background: Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a severe disease that primarily affects young people and can improve with adequate treatment. We aimed to refine the anti-NMDAR Encephalitis One-year functional Status (NEOS) score by developing NEOS2, an updated model using readily available data at the time of diagnosis. We assessed the predictive value of the NEOS2-score for (1) improvement following first-line treatment, (2) functional outcome at one-year follow-up, and (3) resumption of school or work within three years. Methods: In this international (France, Germany, Japan, the Netherlands and Spain) cohort study in patients with a definite anti-NMDAR encephalitis diagnosis (according to the clinical criteria plus antibody testing in CSF), we performed logistic regression analyses to develop and validate multivariable models to predict -based upon variables available at diagnosis- short (ΔmRS two weeks after first-line treatment), middle (modified Rankin Scale [mRS] at one year), and long-term (return to school or work within three years) outcomes. We included clinical variables and biomarkers available at diagnosis. Findings: We included 702 patients (mean age 23 years, 95 %F PUB:(DE-HGF)16 %9 Journal Article %R 10.1016/j.lanepe.2025.101562 %U https://pub.dzne.de/record/283019