P352 – Application of the 2017 McDonald Criteria for the diagnosis of multiple sclerosis to patients with clinically isolated syndromes – Ariana Barros, Lisboa

P359 – Influence of migration on the prognosis of neuromyelitis optica spectrum disorder in non-Caucasian patients – Ricardo Soares dos Reis, Porto

P371 – Increased disability in late-onset multiple sclerosis – Sara Duarte, Porto

P380 – Natalizumab treatment of patients with pediatric-onset multiple sclerosis in Portugal: results from the observational, retrospective TyPed study – Filipe Palavra, Coimbra

P486 – The role of miR-155, a regulator of inflammation, in Multiple Sclerosis development – Bárbara Leal, Porto

P703 – Discontinuation of disease-modifying therapy and its clinical impact in MS patients over 60 years – Filipa Ladeira, Lisboa