The Argentinean multiple sclerosis registry (RelevarEM): Methodological aspects and directions.

Despite that different registries already exist in various countries in Europe and North America, no ongoing nationwide registry exists in Latin America (LATAM), a region where the disease behaves differently than in other regions. The objective of this document is to describe the methodology behind RelevarEM, the first nationwide MS registry in Argentina and LATAM. METHODS: In this article, we described the creation, implementation and data management of the nationwide MS registry in Argentina.

Brain volume loss and no evidence of disease activity over 3 years in multiple sclerosis patients under interferon beta 1a subcutaneous treatment.

The objective of our study was to evaluate the relationship of percentage of annualized brain volume loss (aBVL) and no evidence of disease activity (NEDA) in multiple sclerosis (MS) patients under interferon beta 1-a subcutaneous treatment (IFN-beta) during 3 years of follow up. Relapsing remitting MS (RRMS) patients, with less than three years from disease onset, expanded disability status scale (EDSS) ≤3 and in which IFN beta 1-a 44 mcg was indicated, were included. Demographic, clinical and structural parameters from the magnetic resonance (MR) during the 3 years of follow up were analyzed and compared between patients with and without NEDA (defined as the absence of: (a) three-month confirmed disability progression defined as an increase in EDSS score of 1.

A systematic review about the epidemiology of primary progressive multiple sclerosis in Latin America and the Caribbean.

Unlabelled: Novel epidemiological data has appeared in recent years in Latin America (LATAM) regarding the epidemiology of multiple sclerosis (MS); however, most of this information is related to all MS subtypes, and no specific data was collected regarding the primary progressive form of MS (PPMS). The objective of this study was to perform an updated systematic review of the epidemiology of PPMS in LATAM.

Methods: We conducted a systematic review of published epidemiological articles of PPMS from January 1997 to June 2017.

Gender ratio trends over time in multiple sclerosis patients from Argentina.

Unlabelled: Several studies in multiple sclerosis (MS) suggest a trend of increasing disease frequency in women during the last decades. A direct comparison of gender ratio trends among MS populations from Argentina remains to be carried out. The objective of the study was to compare gender ratio trends, over a 50-year span in MS populations from Argentina.

Increasing prevalence of multiple sclerosis in Buenos Aires, Argentina.

Unlabelled: In 1996, the prevalence of multiple sclerosis (MS) for the metropolitan area of Buenos Aires using the capture-recapture method was estimated to be between 14 and 19.8 cases per 100,000 inhabitants. The aim of this study was to update the prevalence to 2014 following the same methodology.

Disease onset in familial and sporadic multiple sclerosis in Argentina.

Unlabelled: The present study was carried out to assess if there is an anticipation of age at onset in younger generations of familial multiple sclerosis (FMS) vs. sporadic MS (SMS) in Argentina.

Methods: multicenter study that included patients from 14 MS Centers of Argentina.

[Sex-related differences in atrophy and lesion load in multiple sclerosis patients].

Introduction: Previous studies showed gender-associated clinical and MRI differences in multiple sclerosis (MS) evolution. However, only few studies were done with non conventional MRI techniques and no one was done in a South American MS population. The aim of this study was to investigate gender differences according to nonconventional MRI measures in patients with MS from Buenos Aires, Argentina.