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Published on: February 8, 2019
Interleukin-10 promoter polymorphisms in giant cell arteritis
Luigi Boiardi1, Bruno Casali, Enrico Farnetti
1Arcispedale Santa Maria Nuova, Reggio Emilia, Italy.
Interleukin-10 (IL-10) gene promoter polymorphisms are linked to giant cell arteritis (GCA) susceptibility. Specifically, the -592 C/A polymorphism is associated with an increased risk of developing GCA.
Area of Science:
- Immunogenetics
- Rheumatology
- Vascular Inflammation
Background:
- Giant cell arteritis (GCA) is a systemic vasculitis primarily affecting large arteries.
- The genetic factors influencing GCA susceptibility are not fully understood.
- Interleukin-10 (IL-10) is a key cytokine with immunomodulatory functions.
Purpose of the Study:
- To examine the association between interleukin-10 (IL-10) gene promoter polymorphisms and susceptibility to giant cell arteritis (GCA).
- To investigate if these polymorphisms correlate with clinical manifestations of GCA, such as polymyalgia rheumatica (PMR) or ischemic complications.
Main Methods:
- Genotyping of IL-10 promoter polymorphisms in 140 biopsy-proven GCA patients and 200 healthy controls from Reggio Emilia, Italy.
- Molecular methods were employed for genotyping.
- Patients were analyzed for subgroups based on PMR and ischemic complications.
Main Results:
- A significant difference in the C/A 592 genotype distribution was observed between GCA patients and controls.
- Carriers of the A592 allele showed a significantly higher frequency in GCA patients (OR 2.0).
- The ATA haplotype was significantly more frequent in GCA patients, while ACC and GTA haplotypes were less frequent.
Conclusions:
- The -592 C/A promoter polymorphism of the IL-10 gene is associated with susceptibility to giant cell arteritis (GCA).
- No significant association was found between IL-10 polymorphisms and the presence of PMR or ischemic complications in GCA patients.
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