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Abstract

Objective: There is an association between latitude, relative vitamin D deficiency and risk of multiple sclerosis (MS), and an association between vitamin D and disease progression. We have performed a meta-analysis with the aim of investigating the role of therapeutic vitamin D in MS.Methods: A systematic search of databases was performed to identify clinical trials assessing vitamin D in patients with relapsing-remitting MS. Studies were selected based on inclusion and exclusion criteria. Analysis was performed using RevMan 5.3 software.Results: Twelve studies involving 950 patients were included in the final analysis. Studies were divided into four groups because of heterogeneity in study design. Studies were judged to be at low or unclear risk of bias, except in three studies, and this was confirmed by funnel plots. No statistically significant difference was seen for any of the outcome measures. There were non-significant trends in favour of vitamin D for all outcome measures, particularly when only placebo-controlled studies were included. Dose comparison studies showed a significant increase in annualised relapse rate (mean difference 0.15 [95%CI 0.01-0.30]) and non-significant trends of increased Expanded Disability Status Scale and gadolinium-enhancing lesions for the higher-dose arms.Conclusion: These findings suggest that vitamin D supplementation may have a therapeutic role in the treatment of MS. However, there is uncertainty with regard to the most appropriate dose, with high doses potentially being associated with worse outcomes. There remains the need for further well-performed randomised, dose-ranging, placebo-controlled trials of vitamin D in MS.

Item Type:	Article
Authors/Creators:	McLaughlin, L and Clarke, L and Khalilidehkordi, E and Butzkueven, H and Taylor, B and Broadley, SA
Keywords:	multiple sclerosis, treatment, vitamin D, meta-analysis
Journal or Publication Title:	Journal of Neurology
Publisher:	Dr Dietrich Steinkopff Verlag
ISSN:	0340-5354
DOI / ID Number:	https://doi.org/10.1007/s00415-018-9074-6
Copyright Information:	© Springer-Verlag GmbH Germany, part of Springer Nature 2018
Related URLs:	UTAS Profile: Taylor, B
Item Statistics:	View statistics for this item

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