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NDT Advance Access published online on July 29, 2009
Nephrology Dialysis Transplantation, doi:10.1093/ndt/gfp374
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© The Author [2009]. Published by Oxford University Press on behalf of ERA-EDTA. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org


FCGR2B gene polymorphism rather than FCGR2A, FCGR3A and FCGR3B is associated with anti-GBM disease in Chinese

Xu-jie Zhou, Ji-cheng LV, Lei Yu, Zhao Cui, Juan Zhao, Rui Yang, Jia Han, Ping Hou, Ming-hui Zhao and Hong Zhang

Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, and Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, 100034, People's Republic of China

Correspondence and offprint requests to: Hong Zhang; E-mail: hongzh{at}bjmu.edu.cn



  Abstract

Background. The Fc{gamma} receptors play important roles in anti-glomerular basement membrane antibody disease (anti-GBM disease) in animal models, and FCGR gene polymorphisms have been reported to be associated with numerous human autoimmune diseases. We aimed to clarify the genetic association of FCGR gene polymorphisms with anti-GBM disease in Chinese patients.

Methods. A total of 48 patients with anti-GBM disease and 225 geographically and ethnically matched healthy controls were involved. Genotyping of the previously identified polymorphisms FCGR2A131H/R (rs1801274), FCGR2B 232I/T (rs1050501) and FCGR3A176F/V (rs396991) were detected by the TaqMan genotyping assay and FCGR3B NA1/2 by the PCR-sequence specific primer (SSP). Allele type, genotype and haplotype of identified polymorphisms were analysed between patients and controls.

Results. Our results revealed that FCGR2A131H/R, FCGR3A176F/V and FCGR3B NA1/2 were not associated with anti-GBM disease. The frequency of the FCGR2B 232T allele (30.2% versus 15.6%, corrected P = 0.00028, 95% CI: 1.42–3.89) and genotypes of I232T (60.4% versus 31.1%, corrected P = 0.0004, 95% CI: 1.78–6.43) was significantly increased in patients compared with controls.

Conclusion. The present study demonstrates the genetic association of polymorphism of FCGR2B (I232T) with susceptibility to anti-GBM disease in Chinese.

Keywords: anti-glomerular basement membrane antibody disease; Fc{gamma} receptors; FCGR gene polymorphism

Received for publication: 16. 3.09
Accepted in revised form: 6. 7.09


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