Conflict of interest: The authors who took part in this study do not have anything to disclose regarding funding or any conflicts of interest with respect to this manuscript.
Association between cytotoxic T-lymphocyte antigen 4 gene polymorphisms and primary biliary cirrhosis in Chinese population: data from a multicenter study
Article first published online: 22 JUL 2013
© 2013 Journal of Gastroenterology and Hepatology Foundation and Wiley Publishing Asia Pty Ltd
Journal of Gastroenterology and Hepatology
Volume 28, Issue 8, pages 1397–1402, August 2013
How to Cite
Li, Q., Wang, B., Pan, F., Zhang, R., Xiao, L., Guo, H., Ma, S. and Zhou, C. (2013), Association between cytotoxic T-lymphocyte antigen 4 gene polymorphisms and primary biliary cirrhosis in Chinese population: data from a multicenter study. Journal of Gastroenterology and Hepatology, 28: 1397–1402. doi: 10.1111/jgh.12165
These two authors contribute equally to this work.
- Issue published online: 22 JUL 2013
- Article first published online: 22 JUL 2013
- Accepted manuscript online: 22 FEB 2013 10:03AM EST
- Manuscript Accepted: 7 FEB 2013
- primary biliary cirrhosis;
- quality of life;
Background and Aims
The cytotoxic T-lymphocyte antigen 4 (CTLA4) gene polymorphisms have been shown to be associated with the risk of primary biliary cirrhosis (PBC). The study aimed to confirm the associations of CTLA4 gene polymorphisms with risk of PBC and patients' quality of life in Chinese population.
A total of 312 female PBC patients from Chinese Han population were included as case, and 375 age-matched female healthy volunteers were included as control. Four single nucleotide polymorphisms (SNPs) including rs231775, rs3087243, rs231725, and rs5742909 were genotyped. The differences of genotype and allele distributions between PBC patients and healthy controls were assessed. The relationship between CTLA4 gene polymorphisms and healthy status of PBC patients were then investigated through comparisons of the domain scores of PBC-40 questionnaire between different genotype categories of each single nucleotide polymorphism.
The frequencies of G allele at rs231775 and A allele at rs231725 were both significantly increased in PBC patients when compared with normal controls (P < 0.001, odds ratio = 1.44, 95% confidence interval = 1.24–1.67 for rs231775; P < 0.001, odds ratio = 1.29, 95% confidence interval = 1.12–1.48 for rs231725). Besides, patients carrying A allele of rs3087243 had significantly lower score of fatigue domain than those carrying G allele (2.5 ± 0.8 vs 3.9 ± 1.3, P < 0.001).
This study revealed that CTLA4 gene polymorphism might be associated with susceptibility of PBC. G allele of rs231775 and A allele of rs231725 were significantly associated with the risk of PBC. In addition, patients carrying A allele of rs3087243 could have significantly better quality of life than those carrying G allele.