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Published in: Clinical Rheumatology 2/2021

01-02-2021 | Systemic Lupus Erythematosus | Original Article

Patients with asthma have a higher risk of systemic lupus erythematosus: a systematic review and meta-analysis

Authors: Nipith Charoenngam, Ben Ponvilawan, Wasit Wongtrakul, Patompong Ungprasert

Published in: Clinical Rheumatology | Issue 2/2021

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Abstract

Objective

This study aimed to investigate the association between asthma and risk of systemic lupus erythematosus (SLE) using systematic review and meta-analysis technique.

Methods

Potentially eligible studies were identified from Medline and EMBASE databases from inception to March 2020 using search strategy that comprised of terms for “asthma” and “systemic lupus erythematosus.” Qualified cohort study must consist of one cohort of patients with asthma and another cohort of individuals without asthma. Then, the study must report relative risk (RR) with 95% confidence intervals (95% CIs) of incident SLE between the two groups. Qualified case–control studies must consist of cases with SLE and controls without SLE. Then, the study must explore their history of asthma. Odds ratio (OR) with 95% CIs of the association between asthma status and SLE must be reported. Point estimates and standard errors were extracted from each study and were combined using the generic inverse variance method.

Results

A total of 21,486 articles were identified. After two rounds of independent review by three investigators, three cohort studies and seven case–control studies met the eligibility criteria and were included into the meta-analysis. Patients with asthma had a significantly higher risk of SLE compared with individuals without asthma with the pooled odds ratio of 1.37 (95% CI 1.14–1.65; I2 67%). Funnel plot was symmetric and did not suggest the presence of publication bias.

Conclusions

The current study found a significant association between asthma and increased risk of SLE.
Key Points
• Studies have suggested an elevated risk of systemic lupus erythematosus among patients with asthma; however, the results from existing studies are inconsistent.
• This meta-analysis included data from three cohort studies and seven case-–control studies.
• A significant association between asthma and elevated risk of systemic lupus erythematosus was observed, with the pooled odds ratio of 1.37 (95% CI 1.14–1.65; I2 67%).
Appendix
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Metadata
Title
Patients with asthma have a higher risk of systemic lupus erythematosus: a systematic review and meta-analysis
Authors
Nipith Charoenngam
Ben Ponvilawan
Wasit Wongtrakul
Patompong Ungprasert
Publication date
01-02-2021
Publisher
Springer International Publishing
Published in
Clinical Rheumatology / Issue 2/2021
Print ISSN: 0770-3198
Electronic ISSN: 1434-9949
DOI
https://doi.org/10.1007/s10067-020-05279-x

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