Association of HLA-G 3’ Untranslated Region Polymorphisms with Systemic Lupus Erythematosus in a Japanese Population: A Case-Control Association Study

Yuki Hachiya, Aya Kawasaki, Shomi Oka, Yuya Kondo, Satoshi Ito, Isao Matsumoto, Makio Kusaoi, Hirofumi Amano, Akiko Suda, Keigo Setoguchi, Tatsuo Nagai, Kota Shimada, Shoji Sugii, Akira Okamoto, Noriyuki Chiba, Eiichi Suematsu, Shigeru Ohno, Masao Katayama, Hajime Kono, Shunsei Hirohata, Yoshinari Takasaki, Hiroshi Hashimoto, Takayuki Sumida, Shouhei Nagaoka, Shigeto Tohma, Hiroshi Furukawa and Naoyuki Tsuchiya

PLOS ONE, 2016, vol. 11, issue 6, 1-14

Abstract: HLA-G plays a role in fetal-maternal tolerance as well as immunoregulation, and has been suggested to be involved in autoimmune diseases and cancers. HLA-G encodes two potentially functional polymorphisms in the 3’ untranslated region, 14bp insertion/deletion (14bp indel, rs371194629) and a single nucleotide polymorphism rs1063320, previously reported to affect HLA-G expression level or splicing isoform and to be associated with susceptibility to systemic lupus erythematosus (SLE). However, the results of SLE association studies are inconsistent, probably due to the small sample size of each study and lack of consideration of linkage disequilibrium (LD) with HLA-class II haplotypes in each population. In this study, we performed association studies of these polymorphisms on 843 patients with SLE and 778 healthy controls in a Japanese population, in many of whom HLA-DRB1 alleles have been genotyped at the four-digit level. LD was detected between DRB1*13:02, protective against multiple autoimmune diseases in the Japanese, and the rs1063320 G (D’ = 0.86, r2 = 0.02) and with 14bp del (D’ = 0.62, r2 = 0.01), but not between SLE-susceptible DRB1*15:01 and HLA-G. Although significant association with overall SLE was not detected, 14bp ins allele was significantly associated with SLE with the age of onset

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0158065

DOI: 10.1371/journal.pone.0158065

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