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  • Title: Association of angiotensin-converting enzyme insertion/deletion polymorphism with susceptibility to systemic lupus erythematosus: a meta-analysis.
    Author: Huang AF, Li H, Ke L, Yang C, Liu XY, Yang ZC, Xu F, Jia H, Xu WD.
    Journal: Int J Rheum Dis; 2018 Feb; 21(2):447-457. PubMed ID: 29205894.
    Abstract:
    BACKGROUND: The aim of this study was to determine whether the angiotensin-converting enzyme (ACE) insertion/deletion (I/D) gene polymorphism confers susceptibility to systemic lupus erythematosus (SLE)/lupus nephritis (LN). METHODS: A meta-analysis was conducted on the association between the ACE I/D polymorphism and SLE/LN (when available) using: (i) the allelic contrast; (ii) the recessive; (iii) the dominant; and (iv) the additive models. RESULTS: A total of 27 relevant comparisons meeting the inclusion criteria were identified, involving 2718 SLE patients and 3655 controls. Meta-analysis showed a significant association between SLE and the allele D in overall populations (odds ratio [OR] = 1.25, 95% CI: 1.07-1.48, P = 0.004). Stratification by ethnicity indicated a strong association between the allele D and SLE in Asians (OR = 1.36, 95% CI: 1.05-1.75, P = 0.019). Meta-analysis also showed a significant association between SLE and the DD genotype in overall populations (additive model) (OR = 1.38, 95% CI: 1.05-1.83, P = 0.022). In addition, we found significant associations between the recessive model and SLE in overall populations, Asians and Europeans (OR = 1.44, 95% CI: 1.11-1.88, P = 0.007; OR = 1.69, 95% CI: 1.07-2.68, P = 0.024; and OR = 1.31, 95% CI: 1.06-1.62, P = 0.013, respectively). With respect to the association between ACE I/D gene polymorphism and LN risk, there was no significant association in either the overall populations or subpopulations. CONCLUSION: The present study might suggest that ACE I/D polymorphism may be a genetic molecular marker to predict SLE, while this polymorphism may not correlate with LN susceptibility.
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