Common polymorphisms of the and genes correlate with the susceptibility and clinicopathological features of primary angle-closure glaucoma.

The present case study aims to elucidate the correlation between the human 8-hydroxyguanineglycosylase (), and X-ray repair cross-complementing gene 1 () gene polymorphisms to the susceptibility and clinicopathological features of primary angle closure glaucoma (PACG) in a Chinese Han population. Blood samples were obtained from 258 PACG patients (case group) and 272 healthy volunteers (control group). PCR with sequence-specific primer (PCR-SSP) was used to determine the allele frequencies and genotype distributions of the and genes. The risk factors of PACG were determined using logistic regression analysis. The results indicated that Ser326Cys, Asp148Glu and Arg399Gln polymorphisms were correlated with the risk of PACG. Furthermore, there were thicker corneas, higher intraocular pressure (IOP) and a shorter axial length in patients carrying the mutant genotypes of Ser326Cys (Ser/Cys + Cys/Cys), Asp148Glu (Asp/Glu + Glu/Glu) and XRCC Arg399Gln (Arg/Gln + Glu/Glu) than those carrying the corresponding wild-type genotypes. According to the logistic regression analysis, Asp148Glu and Arg399Gln polymorphisms, a short axial length and high IOP are major risk factors for PACG. These findings reveal that Ser326Cys, Asp148Glu and Arg399Gln polymorphisms are correlated with the risk and clinicopathological features of PACG in a Chinese Han population.