Role of the IL33 and IL1RL1 pathway in the pathogenesis of Immunoglobulin A vasculitis Prieto Peña, Diana Sevilla Pérez, Belén Ortego Centeno, Norberto Márquez Ortiz, Ana Martín, Javier We are indebted to the patients and healthy controls for their essential collaboration to this study. We also thank the National DNA Bank Repository (Salamanca) for supplying part of the control samples. This study was supported by European Union FEDER funds and `Fondo de Investigaciones Sanitarias (Grant PI18/00042) from 'Instituto de Salud Carlos III' (ISCIII, Health Ministry, Spain). DP-P is a recipient of a Rio Hortega programme fellowship from the ISCIII, co-funded by the European Social Fund (ESF, `Investing in your future) (Grant Number CM20/00006). SR-M is supported by funds of the RETICS Program (RD16/0012/0009) (ISCIII, co-funded by the European Regional Development Fund (ERDF)). VP-C is supported by a pre-doctoral grant from IDIVAL (PREVAL 18/01). BA-M is a recipient of a `Lopez Albo Post-Residency Programme funded by Servicio Cantabro de Salud. LL-G is supported by funds from IDIVAL (INNVAL20/06). OG is staff personnel of Xunta de Galicia (Servizo Galego de Saude (SERGAS)) through a research-staff stabilization contract (ISCIII/SERGAS) and his work is funded by ISCIII and the European Union FEDER fund (Grant Numbers RD16/0012/0014 (RIER) and PI17/00409). He is beneficiary of project funds from the Research Executive Agency (REA) of the European Union in the framework of MSCA-RISE Action of the H2020 Programme, project 734899-Olive-Net. RL-M is a recipient of a Miguel Servet type I programme fellowship from the ISCIII, co-funded by ESF (`Investing in your future) (Grant Number CP16/00033). 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 2021-09-30T07:42:56Z 2021-09-30T07:42:56Z 2021-08-09 journal article Prieto-Peña, D... [et al.]. Role of the IL33 and IL1RL1 pathway in the pathogenesis of Immunoglobulin A vasculitis. Sci Rep 11, 16163 (2021). [https://doi.org/10.1038/s41598-021-95762-5] http://hdl.handle.net/10481/70546 10.1038/s41598-021-95762-5 eng info:eu-repo/grantAgreement/EC/H2020/734899 http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España Nature