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Cyclic AMP-Responsive Element Modulator α Polymorphisms Are Potential Genetic Risks for Systemic Lupus Erythematosus.

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|November 25, 2015
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Summary

Genetic variations in cyclic AMP-responsive element modulator alpha (CREMα) single nucleotide polymorphisms (SNPs) rs2295415 and rs1057108 are associated with systemic lupus erythematosus (SLE) susceptibility. These CREMα SNPs may influence specific clinical manifestations in SLE patients.

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Area of Science:

  • Genetics
  • Immunology
  • Rheumatology

Background:

  • Systemic lupus erythematosus (SLE) is a complex autoimmune disease with a significant genetic component.
  • The role of cyclic AMP-responsive element modulator alpha (CREMα) in SLE pathogenesis remains largely unexplored.
  • Identifying novel genetic factors is crucial for understanding SLE susceptibility and developing targeted therapies.

Purpose of the Study:

  • To investigate the association between CREMα single nucleotide polymorphisms (SNPs) and SLE susceptibility.
  • To explore potential correlations between specific CREMα SNPs and clinical/serologic features of SLE.

Main Methods:

  • Genotyping of four tag SNPs (rs1057108, rs2295415, rs11592925, rs1148247) in 889 SLE cases and 825 healthy controls.
  • Association analyses using age- and sex-adjusted logistic regression.
  • Haplotype analysis and stratification by clinical/serologic subsets.

Main Results:

  • Increased frequencies of the G allele for rs2295415 (OR 1.244, P=0.019) and rs1057108 (OR 1.165, P=0.049) in SLE patients compared to controls.
  • A significant association of the 'G-G' haplotype (rs1057108 and rs2295415) with SLE susceptibility (OR 1.454, P=0.00056).
  • rs2295415 showed a suggestive association with anti-Sm antibodies-positive SLE (OR 1.382, P=0.044) and a potential protective effect in SLE patients with renal disorder (OR 0.745, P=0.032).

Conclusions:

  • CREMα SNPs rs2295415 and rs1057108 represent novel genetic susceptibility factors for SLE.
  • SNP rs2295415 may increase the risk for anti-Sm antibodies-positive SLE and offer protection against lupus nephritis.
  • Further research is warranted to elucidate the functional mechanisms of CREMα in SLE pathogenesis.