title: Association of IL-10 receptor 2 (IL10RB) SNP with systemic sclerosis.
abstract: Interleukin-10 (IL-10) signaling has been suggested to play a role in systemic sclerosis (SSc). IL10RB codes for IL-10 receptor 2 (IL-10R2), a component shared in receptor complexes for IL-10, IL-22, IL-26 and interferon (IFN)-lambda. In this study, we examined association of IL10RB polymorphism with susceptibility to SSc. Genotype A/A at rs2834167 (47K/K) was significantly increased in diffuse cutaneous SSc (dcSSc) (41.3% in dcSSc, 20.9% in controls, P=0.0018, odds ratio=2.67). A SNP in the 5' flanking region of IL10RB, rs999788, also showed association with dcSSc; however, this association was shown to be secondarily caused by linkage disequilibrium with rs2834167. Significant association was not observed in limited cutaneous SSc (lcSSc). Presence of anti-topoisomerase I antibody was also associated with rs2834167A/A genotype (P=0.0019). Serum IL-10 level was significantly associated with the number of rs2834167A allele (P=0.007). These findings suggested that signaling through IL-10R2 may play a causative role in dcSSc.
authors.affiliation: Doctoral Program in Life System Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan.
authors.forename: Koki
authors.initials: K
authors.lastname: Hikami
authors.forename: Yukikazu
authors.initials: Y
authors.lastname: Ehara
authors.forename: Minoru
authors.initials: M
authors.lastname: Hasegawa
authors.forename: Manabu
authors.initials: M
authors.lastname: Fujimoto
authors.forename: Masaki
authors.initials: M
authors.lastname: Matsushita
authors.forename: Takanori
authors.initials: T
authors.lastname: Oka
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Takehara
authors.forename: Shinichi
authors.initials: S
authors.lastname: Sato
authors.forename: Katsushi
authors.initials: K
authors.lastname: Tokunaga
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Tsuchiya
mesh_terms: D000328:Adult; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D016753:Interleukin-10 / Q000097:blood; D053710:Interleukin-10 Receptor beta Subunit / Q000235:genetics*; D015810:Linkage Disequilibrium; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D045743:Scleroderma, Diffuse / Q000235:genetics*
chemical_list: D053710:Interleukin-10 Receptor beta Subunit; D016753:Interleukin-10