摘要:Cytokines signalling pathway genes are crucial factors of the genetic network underlying the pathogenesis of Immunoglobulin-A vasculitis (IgAV), an inflammatory vascular condition. An influence of the
interleukin (IL)33- IL1 receptor like (IL1RL)1 signalling pathway on the increased risk of several immune-mediated diseases has been described. Accordingly, we assessed whether the
IL33-IL1RL1 pathway represents a novel genetic risk factor for IgAV. Three tag polymorphisms within
IL33 (rs3939286, rs7025417 and rs7044343) and three within
IL1RL1 (rs2310173, rs13015714 and rs2058660), that also were previously associated with several inflammatory diseases, were genotyped in 380 Caucasian IgAV patients and 845 matched healthy controls. No genotypes or alleles differences were observed between IgAV patients and controls when
IL33 and
IL1RL1 variants were analysed independently. Likewise, no statistically significant differences were found in
IL33 or
IL1RL1 genotype and allele frequencies when IgAV patients were stratified according to the age at disease onset or to the presence/absence of gastrointestinal (GI) or renal manifestations. Similar results were disclosed when
IL33 and
IL1RL1 haplotypes were compared between IgAV patients and controls and between IgAV patients stratified according to the clinical characteristics mentioned above. Our results suggest that the
IL33-IL1RL1 signalling pathway does not contribute to the genetic network underlying IgAV.