Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

Vitamin D receptor genetic polymorphisms and the risk of multiple sclerosis: A systematic review and meta-analysis

(2020) Vitamin D receptor genetic polymorphisms and the risk of multiple sclerosis: A systematic review and meta-analysis. Steroids.

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There are conflicting results regarding the exact effect of the vitamin D receptor (VDR) gene polymorphisms on the susceptibility to multiple sclerosis (MS). Therefore, we aimed to investigate the impact of four major studied VDR gene polymorphisms consisting of ApaI, BsmI, FokI, and TaqI on the risk of MS in the Iranian population. A literature search was performed in various databases to find case-control studies evaluating the association between VDR gene polymorphisms and MS risk in Iran. Data were extracted and odds ratios (OR) with 95 confidence intervals (CI) were calculated. Subgroup analyze was performed to detect potential sources of heterogeneity. A total of 1206 cases and 1402 controls in nine case-control studies were included. ApaI was the only variant which showed statistically significant relation in allelic (OR = 0.54 (95 CI: 0.37–0.79); P = 0.00), homozygote (OR = 3.48 (95 CI: 1.7–6.9); P = 0.00), dominant (OR = 0.56 (95 CI: 0.3–0.79); P = 0.01), and recessive (OR = 0.35 (95 CI: 0.18–0.66); P = 0.00) models. The TaqI polymorphism showed a significant negative association with MS only in the homozygote model (OR = 0.28 (95 CI: 0.08–0.9); P = 0.04). The BsmI polymorphism also showed significant relation in allelic (OR = 0.69 (95 CI: 0.51–0.94); P = 0.01), homozygote (OR = 0.46 (95 CI: 0.25–0.86); P = 0.01), and recessive OR = 0.56 (95 CI: 0.39–0.8); P = 0.00) models after performing sensitivity analysis. FokI polymorphism showed no significant association with MS risk. ApaI and TaqI TT genotype were found contributing to MS susceptibility and BsmI and FokI showed no relation with MS susceptibility in the Iranian population. © 2020 Elsevier Inc.

Item Type: Article
Keywords: vitamin D receptor, allele; data base; data extraction; evaluation study; genetic heterogeneity; genetic polymorphism; genotype; homozygote; human; Iranian people; meta analysis; multiple sclerosis; odds ratio; Review; risk assessment; sensitivity analysis; systematic review
Journal or Publication Title: Steroids
Volume: 158
Publisher: Elsevier Inc.
Identification Number: 10.1016/j.steroids.2020.108615
ISSN: 0039128X
Depositing User: مهندس جمال محمودپور

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