IL2RA gene polymorphism rs2104286 A>G seen in multiple sclerosis is associated with intermediate uveitis: possible...

Area of Science:

• Ophthalmology
• Immunology
• Genetics

Background:

• Uveitis is a leading cause of vision impairment.
• Inflammation-related gene polymorphisms are known risk factors for various uveitis types.
• Interleukin-2 receptor alpha (IL2RA) and Interleukin-7 receptor alpha (IL7RA) gene variants have been implicated in immune-mediated diseases.

Purpose of the Study:

• To investigate the association between specific IL2RA and IL7RA gene polymorphisms (rs2104286, rs12722489, rs6897932) and the risk of intermediate uveitis or HLA-B27-associated acute anterior uveitis (AAU).

Main Methods:

• Genotyping was performed using polymerase chain reaction (PCR).
• Study included 145 patients with HLA-B27-associated AAU, 84 patients with intermediate uveitis, 132 HLA-B27-negative controls, and 61 HLA-B27-positive controls.

Main Results:

• The minor allele frequency for the rs2104286 polymorphism was significantly lower in intermediate uveitis patients compared to combined controls (P = 0.006).
• No significant association was found for rs2104286 in HLA-B27-associated AAU patients compared to controls.
• Polymorphisms rs12722489 and rs6897932 showed no significant association with either uveitis type.

Conclusions:

• The rs2104286 polymorphism is associated with intermediate uveitis, suggesting a potential genetic link.
• The rs2104286 polymorphism is not associated with HLA-B27-associated AAU.
• The findings suggest possible shared pathogenic pathways between intermediate uveitis and multiple sclerosis, given previous associations of rs2104286 with MS.