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Profiling of hla-B alleles for association studies with ankylosing spondylitis in the chinese population.

Abstract
Human leucocyte antigen (HLA) B*27 is a susceptibility allele to ankylosing spondylitis (AS). However, major AS-associated subtypes of HLA-B*27 and other HLA-B alleles vary in different ethnic populations. Herein, we examined HLA-B alleles in a total of 360 AS patients and 350 controls of Chinese Han ancestry. The HLA-B genotyping was performed with sequence-based typing (SBT) method. Six HLA-B*27 subtypes B*27:04, B*27:05, B*27:07, B*27:08, B*27:10 and B*27:15 were observed in the cohorts. HLA-B*27:04:01 and -B*27:05:02 appeared significantly increased in AS patients, which indicated as two major susceptibility alleles to AS. Homozygous B*27 was observed only in AS patients. There are 30 HLA-B alleles identified in the studies. HLA-B*15, especially B*15:01:01:01, appeared as the major allele type in the Chinese controls. Some common HLA-B alleles such as HLA-B*15, B*13, B*46 and B*51 were significantly reduced in Chinese AS patients. In conclusion, the studies profiled the HLA-B alleles, and identified major susceptibility subtypes of B27 to AS in Han Chinese population.
AuthorsLin Yi, Jiucun Wang, Xinjian Guo, Maribel G Espitia, Enuo Chen, Shervin Assassi, Li Jin, Hejian Zou, John D Reveille, Xiaodong Zhou
JournalThe open rheumatology journal (Open Rheumatol J) Vol. 7 Pg. 51-4 ( 2013) ISSN: 1874-3129 [Print] United Arab Emirates
PMID24062861 (Publication Type: Journal Article)

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