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Jing Deng, Jiayue Hu, Handan Tan, Guannan Su, Qingfeng Cao, Xinyue Huang, Aize Kijlstra, Peizeng Yang; Association of a PDCD1 Polymorphism With Sympathetic Ophthalmia in Han Chinese. Invest. Ophthalmol. Vis. Sci. 2017;58(10):4218-4222. doi: 10.1167/iovs.17-22195.
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Several studies have shown that sympathetic ophthalmia (SO) and Vogt-Koyanagi-Harada (VKH) disease possess many similarities concerning their clinical manifestations. The aim of this study was to investigate whether single nucleotide polymorphisms that have been shown to be associated with VKH disease in earlier studies may also be associated with SO.
There were 114 SO patients and 1230 healthy controls included in a case-control study, whereby 24 VKH-related single nucleotide polymorphisms (SNPs) were tested. Genotyping was performed using the MassARRAY platform and iPLEX Gold Assay.
The results showed a significantly lower frequency of the PDCD1/rs2227981 GG genotype in SO (Pc =7.85 × 10−3, OR = 0.471). However, no apparent increase in the GA and AA genotype frequency was detected. Moreover, a significant decrease in the G allele frequency of PDCD1/rs2227981 was detected in SO (Pc = 5.08 × 10−3, OR = 0.56).
This study shows that only PDCD1/rs2227981 contributes to the genetic susceptibility of SO, and that the other 23 susceptibility loci of VKH disease are probably not involved in the pathogenesis of this disease.
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