No association between POU4F1, POU4F2, ISL1 polymorphisms and normal-tension glaucoma.
2020
BACKGROUND Normal-tension glaucoma (NTG) that occurs despite normal intraocular pressure has genetic predisposition. Since retinal ganglion cells (RGCs) are a key node in pathogenesis of glaucoma, neurodegeneration of RGCs is thought to be the main cause increasing the risk of NTG development. Here, we aimed to investigate the association of polymorphisms in RGC development genes with NTG development. MATERIALS AND METHODS We performed a case-control association study of 435 patients with NTG and 419 normal controls. We genotyped four single nucleotide polymorphisms (SNPs) in genes responsible for RGC development, namely POU4F2 (rs13152799 and rs1504360), POU4F1 (rs9601092), and ISL1 (rs2288468), by either real-time PCR or PCR-RFLP, and evaluated its association with the risk of NTG development. RESULTS No significant association was observed between the candidate SNPs and NTG development. CONCLUSIONS To the best of our knowledge, this is the first report exploring the association between genes regulating RGC development and NTG susceptibility. Our data could provide a reference for further researches that focus on finding additional potential SNPs of POU4F2, POU4F1, ISL1 or other RGC development genes for NTG.
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