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Updated: Mar 18, 2026

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene
Published on: April 1, 2019
Association of VDR ApaI and TaqI Gene Polymorphisms with the Risk of Scleroderma and Behçet's Disease
Asmaa Kamal1, Sherif M Gamal2, Fatema T Elgengehy2
1a Department of Clinical & Chemical Pathology, Faculty of Medicine , Cairo University , Cairo , Egypt.
Abstract:
Vitamin D deficiency and vitamin D receptor (VDR) gene polymorphisms have been reported in autoimmune diseases. However, their role in Behçet's disease (BD) and scleroderma remains inconclusive. Our aim was to evaluate vitamin D receptor (ApaI, TaqI) gene polymorphisms in relation to Behçet's disease and scleroderma in Egyptians. The study was conducted on 54 patients with BD, 30 scleroderma patients, and 60 healthy control subjects. VDR (ApaI, TaqI) gene polymorphisms were investigated using polymerase chain reaction-restriction fragment length polymorphism technique. The "a" allele of ApaI (A/a) polymorphism was significantly associated with increased BD risk (OR = 2.09, 95% CI = 1.18-3.71, p = 0.011), while the TaqI "tt" genotype was significantly lower in BD patients as compared to control subjects (OR = 0.35, 95% CI = 0.13-0.9, p = 0.026). Carriage of "aT" VDR haplotype was significantly associated with higher BD risk (OR = 2.28, 95% = 1.14-4.56, p = 0.022). In conclusion, our findings suggest that VDR gene polymorphisms have a significant association with BD in Egyptian patients.
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