PURPOSE: The aim of this study is to examine whether or not myocilin (MYOC) genetic variations are associated with susceptibility to primary angle-closure glaucoma (PACG) in the Han Chinese population. METHODS: Four single-nucleotide polymorphisms (SNPs)-rs235913, rs183532, rs12076134, and rs235875-in the MYOC gene were genotyped in 212 adult patients with PACG and 255 age-, sex-, and ethnic-matched healthy controls by using a polymerase chain reaction-restriction fragment length polymorphism assay. Data were analyzed by chi-square analysis. RESULTS: The four SNPs in the MYOC gene were in the Hardy-Weinberg equilibrium in all the subjects. The frequencies of A allele rs183532 were significantly different between the PACG patients and the controls (0.238 vs. 0.169, p=0.008; OR=1.541; 95% CI: 1.117-2.127). The frequencies of the AA genotype and A allele of rs235913 were increased in PACG patients compared with controls, but the difference was not significant (p=0.037, p=0.017, respectively). A comparison of the distributions of the genotypes and alleles of rs12076134 and rs235875 showed no statistically significant differences between the PACG patients and the controls (p>0.05). Haplotype analysis indicated that the frequency of the AATG and AATA haplotypes was significantly higher for PACG patients than for control subjects (both p<0.001). However, the frequency of CGGA and CGTG haplotypes was lower for PACG patients than for control subjects (p<0.001). CONCLUSIONS: Our study suggests that rs183532 is associated with an increased risk of PACG in the Chinese Han population.
PURPOSE: The aim of this study is to examine whether or not myocilin (MYOC) genetic variations are associated with susceptibility to primary angle-closure glaucoma (PACG) in the Han Chinese population. METHODS: Four single-nucleotide polymorphisms (SNPs)-rs235913, rs183532, rs12076134, and rs235875-in the MYOC gene were genotyped in 212 adult patients with PACG and 255 age-, sex-, and ethnic-matched healthy controls by using a polymerase chain reaction-restriction fragment length polymorphism assay. Data were analyzed by chi-square analysis. RESULTS: The four SNPs in the MYOC gene were in the Hardy-Weinberg equilibrium in all the subjects. The frequencies of A allele rs183532 were significantly different between the PACG patients and the controls (0.238 vs. 0.169, p=0.008; OR=1.541; 95% CI: 1.117-2.127). The frequencies of the AA genotype and A allele of rs235913 were increased in PACG patients compared with controls, but the difference was not significant (p=0.037, p=0.017, respectively). A comparison of the distributions of the genotypes and alleles of rs12076134 and rs235875 showed no statistically significant differences between the PACG patients and the controls (p>0.05). Haplotype analysis indicated that the frequency of the AATG and AATA haplotypes was significantly higher for PACG patients than for control subjects (both p<0.001). However, the frequency of CGGA and CGTG haplotypes was lower for PACG patients than for control subjects (p<0.001). CONCLUSIONS: Our study suggests that rs183532 is associated with an increased risk of PACG in the Chinese Han population.
Authors: Tin Aung; Victor H K Yong; Paul T K Chew; Steve K L Seah; Gus Gazzard; Paul J Foster; Eranga N Vithana Journal: Invest Ophthalmol Vis Sci Date: 2005-04 Impact factor: 4.799
Authors: Eranga N Vithana; Chiea-Chuen Khor; Chunyan Qiao; Ningli Wang; Tin Aung; Monisha E Nongpiur; Ronnie George; Li-Jia Chen; Tan Do; Khaled Abu-Amero; Chor Kai Huang; Sancy Low; Liza-Sharmini A Tajudin; Shamira A Perera; Ching-Yu Cheng; Liang Xu; Hongyan Jia; Ching-Lin Ho; Kar Seng Sim; Ren-Yi Wu; Clement C Y Tham; Paul T K Chew; Daniel H Su; Francis T Oen; Sripriya Sarangapani; Nagaswamy Soumittra; Essam A Osman; Hon-Tym Wong; Guangxian Tang; Sujie Fan; Hailin Meng; Dao T L Huong; Hua Wang; Bo Feng; Mani Baskaran; Balekudaru Shantha; Vedam L Ramprasad; Govindasamy Kumaramanickavel; Sudha K Iyengar; Alicia C How; Kelvin Y Lee; Theru A Sivakumaran; Victor H K Yong; Serena M L Ting; Yang Li; Ya-Xing Wang; Wan-Ting Tay; Xueling Sim; Raghavan Lavanya; Belinda K Cornes; Ying-Feng Zheng; Tina T Wong; Seng-Chee Loon; Vernon K Y Yong; Naushin Waseem; Azhany Yaakub; Kee-Seng Chia; R Rand Allingham; Michael A Hauser; Dennis S C Lam; Martin L Hibberd; Shomi S Bhattacharya; Mingzhi Zhang; Yik Ying Teo; Donald T Tan; Jost B Jonas; E-Shyong Tai; Seang-Mei Saw; Do Nhu Hon; Saleh A Al-Obeidan; Jianjun Liu; Tran Nguyen Bich Chau; Cameron P Simmons; Jin-Xin Bei; Yi-Xin Zeng; Paul J Foster; Lingam Vijaya; Tien-Yin Wong; Chi-Pui Pang Journal: Nat Genet Date: 2012-08-26 Impact factor: 38.330
Authors: Veronica Mendoza-Reinoso; Teja S Patil; Maria L Guevara-Fujita; Silvia Fernández; Enrique Vargas; Wilder Castillo-Herrera; Rodolfo Perez-Grossmann; Frank Lizaraso-Caparó; Julia E Richards; Ricardo Fujita Journal: Mol Vis Date: 2012-08-08 Impact factor: 2.367