Association of miR-146a rs57095329 with Behçet’s disease and its complications

ABSTRACT

Background

Behçet’s disease is a chronic relapsing and remitting autoimmune multisystem inflammatory disease characterised by oral aphthae, genital ulcers, skin lesions, gastrointestinal involvement, arthritis, vascular lesions and neurological manifestations. We hypothesised a link between rs57095329 of miR-146a and Behçet’s disease, with further links with common clinical features.

Methods

We tested our hypothesis in 130 Behçet’s disease patients and 131 age and sex-matched healthy controls. Behcet’s disease current activity index (BDCAI) was used to assess patients’ disease activity status. MiR-146a (rs57095329) was genotyped in all participants using RT-PCR and results in patients analysed according to clinical features.

Results

The frequency of the GG and AG genotypes in rs57095329 were strongly associated with Behçet’s disease (adjusted OR 8.05, 95% CI 3.63–17.82; P < 0.001 and OR 2.26, 95% CI 1.27–4.04; P = 0.006, respectively), and in dominant (GG+AG > AA) and recessive (GG > AA+AG) models (both P < 0.001). Additionally, G allele distribution was significantly greater in Behçet’s disease compared with controls (OR 2.85, 95% CI 1.98–4.11, P < 0.001). The AA genotype and A allele were linked to oral ulcers, the GG genotype and G allele to neurological disease, and the GG genotype and G allele to ocular disease (all P < 0.01). There were no links with genital ulceration, skin lesions, vascular disease or the result of the pathergy test.

Conclusion

The miR-146a (rs57095329) is associated with Behçet’s disease and certain genotypes and alleles with oral ulcers, and with ocular and neurological manifestations.

KEYWORDS:

• Behçet’s disease
• rs57095329
• miR-146a

Disclosure statement

No potential conflict of interest was reported by the authors.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

This work did not receive any funds from funding agencies.