Abstract
Systemic lupus erythematosus (SLE) is a multisystem, autoimmune disease that predominantly affects women. Previous findings that duplicated Toll-like receptor 7 (Tlr7) promotes lupus-like disease in male BXSB mice prompted us to evaluate TLR7 in human SLE. By using a candidate gene approach, we identified and replicated association of a TLR7 3′UTR SNP, rs3853839 (G/C), with SLE in 9,274 Eastern Asians (Pcombined = 6.5 × 10-10), with a stronger effect in male than female subjects [odds ratio, male vs. female = 2.33 (95% CI = 1.64-3.30) vs. 1.24 (95% CI = 1.14-1.34); P = 4.1 × 10-4]. G-allele carriers had increased TLR7 transcripts and more pronounced IFN signature than C-allele carriers; heterozygotes had 2.7-fold higher transcripts of G-allele than C-allele. These data established a functional polymorphism in type I IFN pathway gene TLR7 predisposing to SLE, especially in Chinese and Japanese male subjects.
| Original language | English |
|---|---|
| Pages (from-to) | 15838-15843 |
| Journal | PNAS: Proceedings of the National Academy of Sciences of the United States of America |
| Volume | 107 |
| Issue number | 36 |
| Online published | 23 Aug 2010 |
| DOIs | |
| Publication status | Published - 7 Sept 2010 |
| Externally published | Yes |
Research Keywords
- Autoimmunity
- Disease susceptibility
- Functional polymorphism
- Interferon
- Type I
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