RT Journal Article T1 Highly active immunomodulatory therapy ameliorates accumulation of disability in moderately advanced and advanced multiple sclerosis. A1 Lizak, Nathaniel A1 Lugaresi, Alessandra A1 Alroughani, Raed A1 Lechner-Scott, Jeannette A1 Slee, Mark A1 Havrdova, Eva A1 Horakova, Dana A1 Trojano, Maria A1 Izquierdo, Guillermo A1 Duquette, Pierre A1 Girard, Marc A1 Prat, Alexandre A1 Grammond, Pierre A1 Hupperts, Raymond A1 Grand'Maison, Francois A1 Sola, Patrizia A1 Pucci, Eugenio A1 Bergamaschi, Roberto A1 Oreja-Guevara, Celia A1 Van Pesch, Vincent A1 Ramo, Cristina A1 Spitaleri, Daniele A1 Iuliano, Gerardo A1 Boz, Cavit A1 Granella, Franco A1 Olascoaga, Javier A1 Verheul, Freek A1 Rozsa, Csilla A1 Cristiano, Edgardo A1 Flechter, Shlomo A1 Hodgkinson, Suzanne A1 Amato, Maria Pia A1 Deri, Norma A1 Jokubaitis, Vilija A1 Spelman, Tim A1 Butzkueven, Helmut A1 Kalincik, Tomas A1 MSBase Study Group, AB To evaluate variability and predictability of disability trajectories in moderately advanced and advanced multiple sclerosis (MS), and their modifiability with immunomodulatory therapy. The epochs between Expanded Disability Status Scale (EDSS) steps 3-6, 4-6 and 6-6.5 were analysed. Patients with relapse-onset MS and having reached 6-month confirmed baseline EDSS step (3/4/6) were identified in MSBase, a global observational MS cohort study. We used multivariable survival models to examine the impact of disease-modifying therapy, clinical and demographic factors on progression to the outcome EDSS step (6/6.5). Sensitivity analyses with varying outcome definitions and inclusion criteria were conducted. For the EDSS 3-6, 4-6 and 6-6.5 epochs, 1560, 1504 and 1231 patients were identified, respectively. Disability trajectories showed large coefficients of variance prebaseline (0.92-1.11) and postbaseline (2.15-2.50), with no significant correlations. The probability of reaching the outcome step was not associated with prebaseline variables, but was increased by higher relapse rates during each epoch (HRs 1.58-3.07; p Disease progression during moderately advanced and advanced MS is highly variable and amnesic to prior disease activity. Lower relapse rates and greater time on higher efficacy immunomodulatory therapy after reaching EDSS steps 3, 4 and 6 are associated with a decreased risk of accumulating further disability. Highly effective immunomodulatory therapy ameliorates accumulation of disability in moderately advanced and advanced relapse-onset MS. YR 2016 FD 2016-09-28 LK http://hdl.handle.net/10668/10485 UL http://hdl.handle.net/10668/10485 LA en DS RISalud RD Apr 8, 2025