Sherif M Hamdy, Maged Abdel-Naseer, Nevin M Shalaby, Alaa N Elmazny, Ahmed A Nemr, Amr Hassan, Mohamed I Hegazy, Husam S Mourad, Nirmeen A Kishk, Mona A Nada, Ahmed Abdelalim, Amr M Fouad, Hatem S Shehata

Multiple sclerosis (MS) is a complex autoimmune disease with a heterogeneous presentation and diverse disease course. Recent studies indicate a rising prevalence of MS in the Middle East. To characterize the demographics and disease features of Egyptian patients attending four tertiary referral MS centers in Cairo. This was a retrospective, observational study on 1,581 patients between 2001 and 2015. Medical records were reviewed and data were identified and extracted in a standardized electronic registry. The mean age of disease onset was 26.6±7.8 years, with the majority being female (2.11:1). Relapsing-remitting MS was the most common type (75.1%). The main presenting symptom was motor weakness (43.9%), which was also the most frequent symptom during the disease course. Family history of MS was found in 2.28%. Higher initial Expanded Disability Status Scale score, black holes, and infratentorial lesions on initial magnetic resonance imaging were independent factors for disease progression by univariate analysis (OR 3.87 [95% CI 1.84-6.51], 4.14 [95% CI 3.08-5.58], 4.07 [95% CI 3.21-4.99], respectively); however, in multivariate analysis, only infratentorial lesions were an independent risk for disease progression (OR 6, 95% CI 2.99-12.02; P=0.0005). The results from this registry - the largest for MS in the Arab region to date - are comparable to other registries with slight differences.