Complement factor H and interleukin gene polymorphisms in patients with non-infectious intermediate and posterior...

Area of Science:

• Genetics
• Ophthalmology
• Immunology

Background:

• Non-infectious intermediate and posterior uveitis are sight-threatening ocular inflammatory conditions.
• Genetic factors are implicated in the pathogenesis of uveitis, but specific gene associations require further investigation.

Purpose of the Study:

• To investigate the associations of complement factor H (CFH), KIAA1109, and interleukin-27 (IL-27) gene polymorphisms with non-infectious intermediate and posterior uveitis in a Chinese cohort.

Main Methods:

• Genotyping of CFH-rs800292, KIAA1109-rs4505848, and IL27-rs4788084 was performed using TaqMan assays.
• A cohort of 95 Chinese non-infectious uveitis patients (including intermediate uveitis, Vogt-Koyanagi-Harada disease, and Behçet's disease) and 308 healthy controls were analyzed.

Main Results:

• The CFH-rs800292 polymorphism (G allele carriers) was significantly associated with non-infectious intermediate and posterior uveitis.
• The KIAA1109-rs4505848 polymorphism showed a significant association in male uveitis patients and was more frequent in Behçet's disease patients compared to controls and intermediate uveitis patients.
• No significant association was found for IL27-rs4788084 with uveitis.

Conclusions:

• CFH-rs800292 and KIAA1109-rs4505848 polymorphisms are associated with non-infectious intermediate and posterior uveitis.
• Gender may play a role in uveitis susceptibility through the KIAA1109 gene.
• The KIAA1109-rs4505848 polymorphism may be specifically linked to the development of Behçet's disease.