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Published in: BMC Endocrine Disorders 1/2020

01-12-2020 | Diabetes | Research article

Vitamin D receptor gene polymorphisms and the risk of the type 1 diabetes: a meta-regression and updated meta-analysis

Authors: Na Zhai, Ramtin Bidares, Masoud Hassanzadeh Makoui, Saeed Aslani, Payam Mohammadi, Bahman Razi, Danyal Imani, Mohammad Yazdchi, Haleh Mikaeili

Published in: BMC Endocrine Disorders | Issue 1/2020

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Abstract

Background

The association between the polymorphisms in the vitamin D receptor (VDR) gene and the risk of type 1 diabetes mellitus (T1DM) has been evaluated in several studies. However, the findings were inconclusive. Thus, we conducted a meta-analysis to comprehensively evaluate the effect of VDR gene polymorphisms on the risk of T1DM.

Methods

All relevant studies reporting the association between VDR gene polymorphisms and susceptibility to T1DM published up to May 2020 were identified by comprehensive systematic database search in ISI Web of Science, Scopus, and PubMed/MEDLINE. Strength of association were assessed by calculating of pooled odds ratios (ORs) and 95% confidence intervals (CIs). The methodological quality of each study was assessed according to the Newcastle–Ottawa Scale. To find the potential sources of heterogeneity, meta-regression and subgroup analysis were also performed.

Results

A total of 39 case–control studies were included in this meta-analysis. The results of overall population rejected any significant association between VDR gene polymorphisms and T1DM risk. However, the pooled results of subgroup analysis revealed significant negative and positive associations between FokI and BsmI polymorphisms and T1DM in Africans and Americans, respectively.

Conclusions

This meta-analysis suggested a significant association between VDR gene polymorphism and T1DM susceptibility in ethnic-specific analysis.
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Metadata
Title
Vitamin D receptor gene polymorphisms and the risk of the type 1 diabetes: a meta-regression and updated meta-analysis
Authors
Na Zhai
Ramtin Bidares
Masoud Hassanzadeh Makoui
Saeed Aslani
Payam Mohammadi
Bahman Razi
Danyal Imani
Mohammad Yazdchi
Haleh Mikaeili
Publication date
01-12-2020
Publisher
BioMed Central
Published in
BMC Endocrine Disorders / Issue 1/2020
Electronic ISSN: 1472-6823
DOI
https://doi.org/10.1186/s12902-020-00575-8

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