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- Title
Identification of a shared genetic risk locus for Kawasaki disease and immunoglobulin A vasculitis by a cross-phenotype meta-analysis.
- Authors
Carmona, Elio G; García-Giménez, Jose A; López-Mejías, Raquel; Khor, Chiea Chuen; Lee, Jong-Keuk; Taskiran, Ekim; Ozen, Seza; Hocevar, Alojzija; Liu, Lili; Gorenjak, Mario; Potočnik, Uroš; Kiryluk, Krzysztof; Ortego-Centeno, Norberto; Cid, María C; Hernández-Rodríguez, José; Castañeda, Santos; González-Gay, Miguel A; Burgner, David; Martín, Javier; Márquez, Ana
- Abstract
Objectives Combining of genomic data of different pathologies as a single phenotype has emerged as a useful strategy to identify genetic risk loci shared among immune-mediated diseases. Our study aimed to increase our knowledge of the genetic contribution to Kawasaki disease (KD) and IgA vasculitis (IgAV) by performing the first comprehensive large-scale analysis on the genetic overlap between them. Methods A total of 1190 vasculitis patients and 11 302 healthy controls were analysed. First, in the discovery phase, genome-wide data of 405 KD patients and 6252 controls and 215 IgAV patients and 1324 controls, all of European origin, were combined using an inverse variance meta-analysis. Second, the top associated polymorphisms were selected for replication in additional independent cohorts (570 cases and 3726 controls). Polymorphisms with P -values ≤5 × 10−8 in the global IgAV–KD meta-analysis were considered as shared genetic risk loci. Results A genetic variant, rs3743841, located in an intron of the NAGPA gene, reached genome-wide significance in the cross-disease meta-analysis (P = 8.06 × 10−10). Additionally, when IgAV was individually analysed, a strong association between rs3743841 and this vasculitis was also evident [ P = 1.25 × 10−7; odds ratio = 1.47 (95% CI 1.27, 1.69)]. In silico functional annotation showed that this polymorphism acts as a regulatory variant modulating the expression levels of the NAGPA and SEC14L5 genes. Conclusion We identified a new risk locus with pleiotropic effects on the two childhood vasculitides analysed. This locus represents the strongest non-HLA signal described for IgAV to date.
- Subjects
SCHOENLEIN-Henoch purpura; IMMUNOGLOBULINS; META-analysis; CONFIDENCE intervals; SINGLE nucleotide polymorphisms; RISK assessment; GENOMICS; GENES; DESCRIPTIVE statistics; MUCOCUTANEOUS lymph node syndrome; ODDS ratio; VASCULITIS; PHENOTYPES; DISEASE risk factors
- Publication
Rheumatology, 2022, Vol 61, Issue 3, p1204
- ISSN
1462-0324
- Publication type
Article
- DOI
10.1093/rheumatology/keab443